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L.K. Myltykbayeva, The Institute of Combustion Problems, K. Dossumov, G.E. Yergaziyeva, M.M. Telbayeva, А.Zh. Zhanatova, N.а. Assanov, N. Makayeva, Zh. Shaimerden, Al-Farabi Kazakh National University
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 134; doi:10.32523/2616-6771-2021-134-1-44-53

Abstract:
The article describes current trends in the catalytic processing of natural gas such as partial and deep, also steam oxidation of methane and methane decomposition. Kazakhstan is rich in large energy resources. Therefore, it is important to create new gas chemical technologies that will allow gas resources to produce valuable chemical products. Currently, processes based on these reactions have not been introduced into production. There are highlighted catalyst systems for each reaction that provides good performance. The oxide catalysts based on metals of variable valency are effective in all processes. In the future, it is important to increase the activity of these catalysts. The catalysts were prepared by impregnating the carrier capillary (γ-Al2O3) by incipient wetness and subsequently dried at 2000C (2 h) and calcination at 5000C for three hours. In this article, a catalyst based on nickel-zirconium (3%NiО-2%ZrО2) is active in the partial oxidation of methane to obtain synthesis gas. On this catalyst, the reaction products are H2 - 60.5 vol.%, CO - 30.5 vol.%. On a 3%NiО-7%Со2О3-0,5%Сe2O3 catalyst in the reaction of DRY conversion methane 95.6% and the yield of hydrogen and carbon monoxide is 47.0 and 45.9 vol%, respectively. 29.6% methane is converted even at low temperatures (350°C) on catalyst 3%NiО-2%СеО2/γ-Al2O3 modified with cerium oxide in the reaction of deep oxidation of methane. Iron-based catalysts for the reaction of decomposition of methane to hydrogen gas are effective. On 5 wt.% Fe/ɣ-Al2O3 catalyst at 700°C of reaction of methane conversion was 2%, with an increase in the reaction temperature to 850°C, the methane conversion reached 13%, and the hydrogen yield is increased to 5.8 vol.%.
M. Kiikbay, L. N. Gumilyov Eurasian National University, G. Qanai, C.C. Dosmagambetova, K.S. Tosmaganbetova
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 134; doi:10.32523/2616-6771-2021-134-1-24-33

Abstract:
There is carried out a systematic review of the literature on methods for determining platinum (IV) ions and extractants used for their extraction in the article. The article considers chemical, physical, and physico-chemical methods of determination. Also, the authors of the article focused on selective and sensitive spectroscopic methods. There are considered several groups of such reagents and extractants as organophosphorus (tributyl phosphate, di-2-ethylhexylphosphoric acid) diphenylthiourea, high-molecular aliphatic alcohols, organic sulfides isolated from high-sulfur oils, binary extractants based on oxygen-containing and sulfur-containing acids, as well as secondary (R_2 〖NН〗_2А), tertiary (R_3NНA) amines, diamines, and quaternary ammonium bases (R_4NA). They were used for the extraction of platinum from multicomponent objects. Practically common to all the extractants used (chloroform, diethyl ether, carbon tetrachloride, etc.) are their rather high solubility in water, toxicity, volatility, fire hazard. Therefore, it is of fundamental importance to select such extraction systems that combine the effectiveness of organic reagents and the use of such extractants that would eliminate the disadvantages of liquid organic solvents. As such extractants, so-called low-melting organic substances can be used, which do not dissolve in water, are non-toxic, fire-safe, have a high extraction capacity, selectivity, and sensitivity to low content of elements. Therefore, it is fundamentally important to select such extraction systems, which would combine the efficiency of organic reagents and the use of such extractants that eliminate the disadvantages of liquid organic solvents. As such extractants can be used so-called fusible organic substances, which are insoluble in water, non-toxic, fire-safe, have a high extraction capacity, selectivity, sensitivity to low element content.
S.M. Asadov
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 134; doi:10.32523/2616-6771-2021-134-1-7-23

Abstract:
This article is devoted to modeling the kinetics of colloidal crystallization of cadmium selenide (CdSe) nanoparticles (NPs). The kinetic equation is modified, considering the contributions of the reaction rate constants of individual stages. It includes the reaction rate constants, thermodynamic and calculated parameters, and physical properties. There is used modified kinetic model based on the crystallization equation. There are considered the contributions of adsorption, desorption, and migration of nucleated particles at different times. Modified model assumes that, upon crystallization of NPs CdSe, monomer units depend on the frequency of attachment and detachment transitions of the monomer–CdSe complex. In this case, the transformation of the precursor into a monomer, the formation of an effective monomer and nucleation pass into the growth stage of (NC CdSe) nanocrystals with a seeded mass. In the process, the resulting nanocluster will continue to grow due to early maturation, aging, and subsequent growth into larger NC CdSe. The Kinetic Monte Carlo method (KMC) is used to approximate the model of the nucleation–growth of NC considering different contributions to the reaction rate constants. The modified model with the use of KMC allows to describe the dependences of the kinetic rate constants on the average radius of nanoparticles as a function of time, concentration, and distribution of NC CdSe at a given time. There are described conditions for the formation of NPs CdSe with an evolutionary distribution function of NC CdSe in size space. The results of modeling the kinetics of colloidal crystallization of CdSe can be used to control nucleation rate and growth of NPs CdSe, as well as similar systems in the formation of high-quality NC.
L.N. Raimbayeva, S. Amanzholov East Kazakhstan State University, R.A. Aubakirova
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 134; doi:10.32523/2616-6771-2021-134-1-34-43

Abstract:
Germanium is an indispensable high-tech element in many modern industries due to the unique semiconductor properties of its crystals. Subsequently, there were discovered other interesting properties of germanium and its compounds, which contributed to a significant expansion of its industrial use. At present, there are developed few methods for the determination of germanium in various raw materials that could find practical application. The article presents a method for measuring the concentration of germanium in technological products of lead, zinc, and copper industries using the latest technological equipment-an atomic emission spectrometer with inductively coupled plasma Spectro CirosCCD with Smart Analyzer Vision software in solutions obtained after decomposition of samples with a mixture of concentrated nitric and hydrofluoric acids, followed by the addition of dilute sulfuric acid at a wavelength of 209.43 nm. The range of analyte contents is 10-4-10-3% by mass, the accuracy of the analysis method is ± Δ0.0011-0.0012% by mass, and the extended uncertainty of the analysis results is U (CGe) 0.0011-0.013% by mass.
А.Ye. Alish, Eurasian National University named after L.N. Gumilev, А.о. Daribay, А.к. Agibayeva, Taraz state pedagogical university
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130; doi:10.32523/2616-6771-2019-130-1-113-119

Abstract:
Glass production, like any other production, is directly related to its environmental impact. Therefore, one of the important measures is to study the environmental impact of the rapidly growing glass industry. Determining the amount of dust emitted by the SAF glass factory in the city of Taraz, include the main sources of dust formation in the glass factory, the amount of dust and their dispersion composition. The studies showed the concentration of dust is slightly higher than the normal values established in the loading and unloading workshop, in the dosing device and in the soda loading area and in the working area of the glass melting furnace. This directly affects the environment and health of longtime workers.
K.M. Akhmedenov, West Kazakhstan State University named after M. Utemisov, G.Z. Idrisova, N.Kh. Sergaliev, West Kazakhstan agrarian and technical University named after Zhangir Khan
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130; doi:10.32523/2616-6771-2020-130-1-88-102

Abstract:
The results of hydrochemical and Toxicological examination of 16 springs in Aktobe, 12 springs in West Kazakhstan and three springs in Atyrau regions of Western Kazakhstan are presented. The characteristics of the content of cations and anions, heavy metals in hydrogeochemical samples of spring water, indicators of microbiological research of water (total microbial number, total coliform bacteria, thermotolerant coliform bacteria), factors of bacterial contamination of springs in comparison with sanitary standards and water quality requirements are given. The results of floral studies of springs, a list of rare and protected species of flora of spring complexes listed in the Red Book of Russia and Kazakhstan are presented
S.M. Ismagulova, L.N. Gumilyov EURASIAN NATIONAL UNIVERSITY, A.N. Dunets, P.S. Dmitriyev, A.A. Eremin, K.м. Janaleyeva, M.Kozybayev North Kazakhstan State University
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 131; doi:10.32523/2616-6771-2020-131-2-85-95

A.T. Beketova, L.N.Gumilyov Eurasian National University, N.B. Mahanova, K.K. Abildinov, Zh.K. Esenova, Zh.G. Berdenov, А. Ilies
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 131; doi:10.32523/2616-6771-2020-131-2-68-77

S. Abdullah
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 131; doi:10.32523/2616-6771-2020-131-2-63-67

Abstract:
Aim of this study is to examine and evaluate the ecology - based environmental education program which was applied in years between 2003-2006 Kazdagi National Parks in the Western Turkey. Ecology - based environmental education aims at using natural and cultural resources of Kazda ð ı National Park to teach graduate research assistants and scout teachers about the nature. The expectation is to increase the environmental awareness of participants in general. At the end of the education program, it is expected that the participants will develop a better understanding of local, regional, national as well as international environmental problems; will be able to discuss and provide alternative solution to global ecological crises; and will take action in their individual lives towards creating a more sustainable environment for future. The main or purpose of the project will be to teach natural interactions in an ecosystem. Emphasis will be given to human action that has been interrupted that interaction and made natural environments less sustainable. Therefore, particular emphasis will be given to cultural ecology of the protected area and the participants are expected to develop a thorough understanding of human and environmental interaction.
K.S. Baktybekov, Jsc ", G.R. Kabzhanova, А.а. Aimbetov, M.T. Alibayeva, National Company ", Kazakhstan Gharysh Sapary", Jsc "national Company "kazakhstan Gharysh Sapary"
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 131; doi:10.32523/2616-6771-2020-131-2-78-84

Abstract:
Ground monitoring of soil massifs takes a lot of time, labor and material resources, although it is the most accurate and detailed. When introducing complex methods of monitoring the soil cover, the inclusion of space technologies is mandatory.Remote sensing data carry objective information over large areas, obtained in various spectral ranges. The article discusses the possibility of using remote sensing data for mapping and monitoring changes in the soil cover of Northern Kazakhstan. On the basis of thematic processing of remote sensing data of native satellites, a spatial analysis of the content of main nutrients in the sowing layer of soils was carried out, the relationship was revealed between fertility indicators and the value of vegetation indices for test ranges of the territory of Northern Kazakhstan.
A.K. Tashenov, L.N. Gumilyov Eurasian National University, A.S. Kabylova, M.V. Frontasyeva, N.M. Omarova, S.V. Morzhukhina, State Budgetary Educational Institution Of Higher Education
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130; doi:10.32523/2616-6771-2020-130-1-54-61

Abstract:
The results on assessing trace element contamination of the environment based on analysis of moss biomonitors collected in Central Kazakhstan. Concentrations of elements were determined by neutron activation analysis and atomic absorption spectrometry in the Joint Institute for Nuclear Research. A total of 39 elements were identified, including heavy metals.
N.A. Duzbayeva, Sh.K. Sanyazova, K. Kabdysalym, M.M. Nykmukanovа, A. Adhikari
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130; doi:10.32523/2616-6771-2019-130-1-68-75

Abstract:
The results of phytochemical studies of plants are presented of the genus Thymus Serpyllum L. growing in East Kazakhstan. The quantitative characteristics of macro- and micronutrients are determined. In plants, the maximum calcium content is 654.25 µ g / ml, magnesium 235.34 µ g / ml. From thyme (Thymus serpyllum L.), a pure substance of the class of flavonoids, campferid, was isolated. The structure of the compound was proved by spectral (IR, UV, 13C NMR, 1H -, mass spectrometry) analysis methods. The biological activity of phytopreparations and the obtained individual compound was studied. This article presents the results of chemical composition study of the aboveground part of Thymus Serpyllum L. and the number of biologically active substances widely used in folk medicine, distributed in the Eastern territory of Kazakhstan. Thymus Serpyllum L. is a valuable medicinal plant raw material and a source of a number of biologically active substances (flavonoids, phenolycosides, phenolic acids, tannins, essential oils), which is characterized by a wide range of pharmacological activity that can resist inflammation, viruses, anti-rheumatic and other diseases.
M.M. Mataev, Kazakh National Pedagogical University, N.B. Abisheva, Zh.Y. Tupsinova, M.R. Abdraymova
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130, pp 81-87; doi:10.32523/2616-6771-2020-130-1-82-88

Abstract:
The synthesis of compounds was carring out in the system of gadolinium chromite - ferrites doped with bismuth. The citrate-nitrate method was chosen as the synthesis method. An X-ray phase analysis was performed to study the formation of new phases. Based on the results of x-ray phase analysis, it was determined that the obtained compounds in the chromiteferrite system are crystallized in orthorhombic syngony with the Pbnm(62) spatial group. It is showing that when nitric acid is using as a precipitator, can be obtaining single-phase powders. In addition, the structure and parameters of elementary cells of synthesized chromite - ferrites were determining by x-ray phase analysis. The shapes and sizes of the resulting manganite powders determined by electron microscopy. According to the results of the scanning electron microscope, the powders of synthesized chromite-ferrites consist of crystals from 184.3 nm to 3.02 microns.
M.M. Mataev, Kazakh National Women’s Teacher Training University, G.S. Patrin, K.Zh. Seitbekova, Zh.I. Tursinova, Institute of Engineering Physics and Radio Electronics Siberian Federal University
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 131; doi:10.32523/2616-6771-2020-131-2-31-37

T.K. Nyshanbek, L.N.Gumilyov Eurasian National University, Sh.K. Utzhanova, K.Sh. Zhumagulova, L.A Kusepova, G.K. Zhumabaeva, G.Zh. Baisalova, №58 general education school, Specialized school №9 «Zerde»
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 131; doi:10.32523/2616-6771-2020-131-2-38-42

S.S. Shamshedenova, L.N. Gumilyov EURASIAN NATIONAL UNIVERSITY, R.R. Beisenova
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 131; doi:10.32523/2616-6771-2020-131-2-96-102

А.а. Bakibaev, National Research Tomsk State University, М.Zh. Sadvakassova, R.Sh. Еrkasov, А.е. Аtagulova, A.A. Sorvanov, L.N.Gumilyov Eurasian National University
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 131; doi:10.32523/2616-6771-2020-131-2-18-22

B.Zh. Suleimenova, Laboratory Of Green Energy And Environment National Laboratory Nur-Sultan, A.S. Shapi, K.A. Beisembaeva, D. Shah, E.K. Sarbassov, L.N. Gumilyov EURASIAN NATIONAL UNIVERSITY
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 131; doi:10.32523/2616-6771-2020-131-2-58-62

R.A. Aubakirova, East Kazakhstan State University named after S. Amanzholov, E.N. Ivashchenko, B.S. Saurbaeva, G.K. Daumova, East Kazakhstan State Technical University named after D. Serikbayev
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130; doi:10.32523/2616-6771-2020-130-1-11-17

Abstract:
The entire technological process, starting from ore mining to ending with the release of finished products, it is closely connected with the analytical control of each stage. Currently, the practice of analytical laboratories of large metallurgical enterprises, which include the Oskemen Metallurgical Complex LLP "Kazzinc", has firmly entered the physical and chemical or instrumental methods. These methods, which are characterized by rapidity, high selectivity and the ability to simultaneously determine several components, have replaced in most cases chemical ones. The article presents experimental data on the analysis of dump slag - the waste from metallurgical production of the Oskemen Metallurgical Complex LLP "Kazzinc"- by atomic emission method with inductively coupled plasma. Atomic spectral analysis are used in mining and geology, metallurgy, metalworking and chemical industries, etc. The analysis results were processed from the standpoint of the concept of uncertainty, which is very relevant in the practice of the analytical laboratory.
K.K. Kabdulkarimova, Shakarim State University, A.M. Oralbekova, S. Nauyryzbek
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130; doi:10.32523/2616-6771-2020-130-1-29-34

Abstract:
Limited liability partnership (LLP) KAZZINC - one of the largest industrial enterprises of East Kazakhstan region. From Kazzinc to the Irtysh water flow should be in the following order: river Filippovka, Quiet, Ulba and the Irtysh. Semey (former Semipalatinsk) is a large city on the Irtysh, the water of which is taken by "SemeyVodokanal" [1]. In the laboratory we investigated the possibility of using filamentous algae (of ulothrix, Spirogyra, cladophora) as biological monitoring in the waters of the Semipalatinsk region. Since the main products of "Kazzinc" LLP are metals such as zinc, cadmium, lead and copper, in the laboratory of elemental analysis of the branch of "Institute of Radiation safety and ecology" of National nuclear center of the Republic of Kazakhstan the absorption capacity of filamentous algae is determined in relation to zinc, copper, cadmium, iron and lead, as well as the residual concentration of heavy metals in the test water. In idle test identifies such elements as Be, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Cd, Cs, Pb, and U. The concentrations of these elements were determined by inductively coupled plasma mass spectrometry (ICP - MS) on the Agilent 7700x instrument and atomic emission spectrometry (NPP - ISP) on the iCAP 6300 Duo.
B.M. Kussainova, L.N. Gumilyov Eurasian National University, G.K. Tazhkenova, I.A. Kazarinov
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130; doi:10.32523/2616-6771-2020-130-1-42-47

Abstract:
The problem of creating and using sorption materials is relevant for the practice of modern chemistry, biotechnology, medicine and agriculture. Knowledge of the physical and chemical laws of the processes of carbonation, activation, as well as sorption and desorption is of particular importance in the case of nanostructured carbon sorbent for highly effective treatment of water contaminated with pesticides, as well as for reducing the concentration of cytokines in the blood of patients with sepsis. It is of great practical importance to obtain adsorbents using a carbon sorbent to significantly reduce the concentrations of heavy substances, which is very important for the Western regions of Kazakhstan. Thus, it is currently relevant to develop such sorbents that would have high mechanical strength and withstand high fluid pressure during operation, have a large capacity and high wear resistance, allowing them to work for a year or more. Based on the above, the goal of our research is to create new modified carbon sorbents for industrial use for wastewater treatment.
S.R. Konuspaev, Al-Farabi Kazakh National University, M. Shaimardan, A. Nurlan, L.N. Gumilyov Eurasian National University
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130; doi:10.32523/2616-6771-2020-130-1-35-41

Abstract:
In this article, the results of hydrogenation of benzene and toluene on rhodium catalysts supported on activated carbons are presented by obtaining from rice husk (RSHAU) and apricot shell (AKAU) in ethanol and the temperature range of 40 - 80 ◦ C hydrogen pressure of 20 - 100 atm. It is shown that the best carrier is AKAU, where the strength of the starting material is preserved while RSHAU is volatile and difficult to separate from the reaction mass. The activity of the Rh / AKAU catalyst is comparable to that of Rh supported on sibunite (Siberian carbon carrier) and birch activated carbon (BAU), and on Rh / RSHAU the reaction rate is five times lower. The characteristics of the catalysts are studied by means of Brunauer-Emmett-Teller (BET) and scanning electron microscope (SEM) methods. The composition of the catalyst, the kinetic parameters of the process are determined the reaction order with respect to hydrogen and benzene, and the activation energy.
Remenyik Bulcsu, David Lorant
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130; doi:10.32523/2616-6771-2020-130-1-103-112

Abstract:
According to the Eurostat database, the percentage of renewable energy sources in the energy mix of the EU is increasing year after year (www.europa.eu/eurostat). In 2018, the values reached 73% in neighboring Austria (48% in Croatia, 42% in Romania, 32% in Slovenia and 21% in Slovakia), Hungary now stands at 8%. Wind energy is the leader in the renewable energy structure of the EU countries (35, 8% in 2018), since the construction of wind farms is prohibited in our country, one of the main objectives of research is to examine our energy structure. Our last position in renewable energy in 2020 prompted the government to develop a new climate strategy (mekh.hu/nemzetienergiastrategia2030). According to the new strategy, Hungary is estimated to be climate and carbon neutral by the end of the decade. Among the alternative sources of energy, solar energy is becoming the favorite, and our article points out why other forms of energy are being overshadowed. Analyzing the changes in the country’s future energy mix, it can be said that it will be based essentially on nuclear power and electricity from Russia’s electricity grid. However, due to the drastic drop in the cost of solar panels in the energy mix of households, solar energy has become a favorite of renewable energy sources. In the climate strategy, the government plans to create 8,000 MW of solar energy by 2050, which will be mainly used in households, municipal buildings, and tourism.
Zh.I. Inkarova, L.N. Gumilyov Eurasian National University, T.V. Nazarova, K.M. Dzhanaleeva, G.J. Baryshnikov, P.S. Dmitriev, Altai State University, North Kazakhstan State University
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130; doi:10.32523/2616-6771-2020-130-1-120-132

Abstract:
The article is concerned with the processes of eutrophication of lake systems in Northern Kazakhstan. A comprehensive assessment of the current state of the ecosystem of the Zhamanovskoe Lake was carried out. The main reasons for the eutrophication of the Zhamanovskoe Lake have been identified: plowing of the catchment area, use of pesticides, cattle grazing and watering. Activities on land reclamation were developed. The Zhamanovskoe Lake is a typical reservoir of Northern Kazakhstan in terms of size, water receiving, origin of the lake basin, etc. Research undertaken can be applied to more water bodies.
L.K. Tastanоva, K. Zhubanоv Aktоbe Regiоnal State University, A.M. Muratkaliy
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130; doi:10.32523/2616-6771-2020-130-1-62-67

Abstract:
Currently, the oxidation process, including the oxidation of cyclohexane with hydrogen peroxide, is widely used in the chemical industry. Today, polymer-metal catalysts are of great importance for the oxidation process. In this paper, ironcontaining catalysts were prepared and their activity was studied during the decomposition of hydrogen peroxide. Synthesis of catalysts were carried out by the impregnation method. The microstructure of iron-containing catalysts were determined using the scanning electron microscope PHENOM TM G2. The porous dimensions and characteristics were determined. Determination of the oxygen content formed during the decomposition of hydrogen peroxide was carried out using the gasometric method. As a result, it was found that the Fe-PVPD/ Al2O3 catalyst has a high activity in comparison with other iron-containing catalysts.
Sh.K. Amerkhanova, L.N. Gumilyov EURASIAN NATIONAL UNIVERSITY, R.M. Shlyapov, A.S. Uali, D.S. Belgibaeva, M.M. Asadov
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 131; doi:10.32523/2616-6771-2020-131-2-8-17

A.A. Belgibaeva, L.N.Gumilyov Eurasian National University, R.Sh. Erkasov, I.A. Kurzina, N.I. Karakchieva, V.I. Sachkov, Yu.A. Abzaev, National Research Tomsk State University, Siberian Research Institute of Agriculture and peat is a branch of the Siberian Federal Scientific Center for Agro biotechnologies of the Russian Academy of Sciences, Tomsky State Architectural and Construction University
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 131; doi:10.32523/2616-6771-2020-131-2-23-30

Zh.E. Dzhakupova, Zh.K. Zhatkanbayeva, K.S. Meiramkulova, R.S. Begaliyeva, L.K. Beisembaeva, M.E. Salihova
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 131; doi:10.32523/2616-6771-2020-131-2-51-57

А. Sabitova, Shakarim State University, S. Mussabayeva, B. Bayakhmetova, N. Nurgaliev, Semey Medical University
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 131; doi:10.32523/2616-6771-2020-131-2-43-50

A.A. Bakibaev, National Research Tomsk State University, М.Zh. Sadvakassova, R.Sh. Еrkasov, А.е. Аtagulova, L.N.Gumilyov Eurasian National University
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130; doi:10.32523/2616-6771-2020-130-1-18-22

Abstract:
This paper presents the results that allow one to reliably identify N-alkyl- (10 compounds) and N-alkyl-N’- arylalkylureas (12 compounds) based on the data of 1H and 13C nuclear magnetic resonance (NMR) methods. A systematic analysis has been carried out of chemical shifts in the NMR spectra of the compounds. Additionally, the authors have investigated the effect of the nitrogen atoms substituents on the chemical shifts in the NH2, NH, and C = O groups of urea.
А.Sh. Kulankadir, L.N.Gumilyov Eurasian National University, S.S. Dosmagambetova, K.S. Tosmaganbetova
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130, pp 48-53; doi:10.32523/2616-6771-2020-130-1-49-54

Abstract:
Cobalt is a relatively rare metal, and its rich deposits are now almost exhausted. The main sources of industrial production of metallic cobalt are copper-nickel ores containing cobalt as an impurity. The processing of these ores is very complex and involves pyro- and hydrometallurgical methods depending on the composition of the ore. The result is a solution of cobalt and nickel chlorides containing impurities of copper(II), lead(II), bismuth(III) ions. Extraction is increasingly used to purify cobalt from associated impurities. Extraction methods are widely used in hydrometallurgy, the nuclear materials industry, the technology of rare metals and the production of highly pure substances, as well as in analytical chemistry. However, despite this they have a number of drawbacks the main one is the use of fire hazardous and toxic organic solvents; therefore, the principles of eliminating toxic components from the process are becoming more common. The physicochemical basis of the extraction of cobalt (II) ions was studied by a stearic acid melt.The possibilities of practical application are considered of research results. Solid extracts of cobalt(II) were obtained with low-melting organic extractants. They meet all the requirements of standard samples: they differ in homogeneity of distribution, in similarity of composition with the analyzed samples and they can be used for several years.
R.O Orynbassar, K. Zhubanоv Aktоbe Regiоnal State University, T.S. Kaynenova, L.K. Tastanova
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130; doi:10.32523/2616-6771-2020-130-1-23-28

Abstract:
The main problem in the oil refining industry is variable composition of raw materials. In order to produce high-quality products, it is proposed to forecast and plan the production activity of oil refinery depending on the composition of raw materials. For this purpose, comparisons were made for oil fields in the Aktobe region and for open distillates obtained during primary pumping. The main indicators of oil from the Alibekmola and Bozoi fields, i.e. the relative density and viscosity of oil and petroleum products are determined under laboratory conditions. It was found that depending on the component composition and location of the field, the main indicators of oil are different. These indicators are important for determining the quality, efficiency of application, selection of the processing scheme, transportation of oil and petroleum products. In addition, it allows to optimize the processing process,monitor constantly the operation mode and get high-quality products.
M.K. Ibraev, Karaganda State Technical University, B.в. Smagulova, E.N. Turasheva
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 130, pp 76-80; doi:10.32523/2616-6771-2020-130-1-78-80

Abstract:
The article describes the main provisions, as well as the Standards of the Republic of Kazakhstan in the field of metrological support in the development of standard reference samples in the Republic of Kazakhstan. The overreaching objective of the work is the development and metrological research of the mass fraction of water in organic liquids using the 1 class accuracy burette with a one-way valve for titration. The preparation of titrating substances is described in the form of a solution of known concentration and devices for the potentiometric (volumetric) Karl Fischer’s titration method. The progress of work on determining the mass fraction of water in carbon is described in detail. The results of the determination of water in hydrocarbons are shown in tabular form. The determination of the stability of the test sample of the mass fraction of water is described in an organic liquid. The proposals for studying is given the possibility of using the developed samples and their certification as state standard samples.
A.S. Myrzakhanova, Zh.м. Коzhinа
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 127; doi:10.32523/2616-6771-2019-127-2-44-48

N.S. Kadraliyeva, T.T. Mashan
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 127; doi:10.32523/2616-6771-2019-127-2-36-38

Zh.E. Dzhakupova, Zh.K. Zhatkanbayeva, R.S. Begaliyeva, D.K. Salimova
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 127; doi:10.32523/2616-6771-2019-127-2-19-25

N.D. Nurtazina, G.A. Seilkhanova, D.N. Akbayeva, A.N. Imangaliyeva, A.B. Rakhym
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 128; doi:10.32523/2616-6771-2019-128-3-82-93

S.M. Sergazina, A.R. Alpisov, E.A. Piatov, A.S. Hamitova, I.B. Fahrudinova, A.G. Zhaxybayeva, Kokshetau Jsc Kokshetauminvody
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 128; doi:10.32523/2616-6771-2019-128-3-94-100

Zh.S. Kassymova, А.N. Klivenko, А.D. Mukusheva
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 129; doi:10.32523/2616-6771-2019-129-4-13-24

А. Sabitova, S. Musabaeva, B. Bayakhmetova, B. Gaisina
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 129; doi:10.32523/2616-6771-2019-129-4-64-71

G.V. Herman, D.C. Ilies, S.M. Sonko, O. Gaceu, A. Ilies, I. Josan, C. Mester, Oradea Crisuri Rivers Basin Administration
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 129; doi:10.32523/2616-6771-2019-129-4-91-99

K.A. Shorayeva, B.K. Massalimova, V.A. Sadykov
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 129; doi:10.32523/2616-6771-2019-129-4-47-51

G.K. Tazhkenova, G.M. Shayikhova
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 127; doi:10.32523/2616-6771-2019-127-4-13-18

Zh. Zh. Zhumatova, D. T. Kazyakhmetova
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 128; doi:10.32523/2616-6771-2019-128-3-27-32

Zh.K. Shomanova, R.Z. Safarov, Yu.G. Nosenko, K.Z. Zhunussova
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 128; doi:10.32523/2616-6771-2019-128-3-110-114

G.M. Dzhanaleeva, Астана Евразийский Национальный Университет Им. Л.н.гумилёва, Zh.G. Berdenov
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 126; doi:10.32523/2616-6771-2019-126-1-84-89

Г.ж. Бaйсaлoвa, A.к. Көкорaевa, Р.ш. Eркaсoв, Д. Aмaнгелдi
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 126; doi:10.32523/2616-6771-2019-126-1-16-20

А.а. Саипов, L.N. Gumilyov EURASIAN NATIONAL UNIVERSITY
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 126; doi:10.32523/2616-6771-2019-126-1-91-99.

M. Joan., Uniwersytet Gdaсski Wydziai Oceanografii I Geografii
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 126; doi:10.32523/2616-6771-2019-126-1-78-83

А.ж. Ақбасова, Туркестан Международный Казахско-Турецкий Университет Имени Ходжи Ахмеда Ясави, М.о. Байхамурова, А.с. Әбсейт, Г.ғ Әбдiкәрiм
BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series, Volume 126; doi:10.32523/2616-6771-2019-126-1-60-67

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