Azerbaijan Journal of Chemical News

Journal Information
ISSN / EISSN: 26637006 / 27092666
Total articles ≅ 33

Latest articles in this journal

Azerbaijan Journal of Chemical News, Volume 4, pp 23-31;

The article presents comparative results of experimental-industrial tests (EIT) of the nanodemulsifier "IKHLAS-1" at the facilities of JSC "Ozenmunaigas" of the Republic of Kazakhstan. As a result of local EIT, for the first time, cost-effective nanoecotechnologies were proposed using the “IKHLAS-1” nanodemulsifier with a polynanostructure to improve water preparation at the PWDU-1 (preliminary water discharge unit), as well as for the processing of historical sediments at the OPPSh (Oil Preparation and Pumping Shop) of “Uzen” oil field central production facility. The quality of commersial oil in all EIT carried out was significantly better compared to the base demulsifier "Randem-2201". Keywords: nanodemulsifier "IKHLAS-1" with polynanostructure, "Uzen" oil field, utilization of hard to destroy water-oil emulsions and suspensions, oilfield nanoecotechnologies, primary preparation of oil.
Azerbaijan Journal of Chemical News, Volume 4, pp 32-39;

The article analyzes the determination of the amount of dissolved ecotoxicants in the sample taken from the industrial wastewater obtained during the process of hydrogen treatment of petroleum oils. During the hydrogenation process, different types of wastes are formed, depending on the nature of each compound contained in petroleum distillates. Every gas, liquid, solid waste formed during the process of hydrogen purification of petroleum distillates by the oil refining industry has a negative impact on the environment in various ways. One of the main directions of our scientific research is the ecological assessment of the environmental impact of wastewater formed in the process of hydrogen treatment of petroleum distillates.Based on the results obtained, the environmental impact of the wastewater was assessed. The amount of volatile ecotoxicants in the wastewater sample was determined by spectral methods and is shown in the table. We used gas chromatography-mass spectrometry method for the polycyclic aromatic hydrocarbons; optical emission spectrometry method for metals; spectrometry method for phenols, dyes and fluorine; nephelometry method for turbidity; the gravimetry method for total suspended particles. Based on the results obtained, it is possible to assess the environmental impact of wastewater generated during the technological process at the hydrogen treatment plant. Keywords: petroleum distillates, hydrogen purification, spectral method, ecotoxicants, effluents.
Azerbaijan Journal of Chemical News, Volume 4, pp 12-16;

In this work, we studied the process of hydroisomerization of n-hexane on various industrial nickel-containing catalysts. Ni/diatomaceous earth and NiCr2O3, which were not previously used in the isomerization process, but were used in various industrial processes, were used as catalysts in this process. For comparative purposes, the studies varied the hydrogen to feed ratio to varying degrees and calculated the conversion and isomer yield on both catalysts, which are key process indicators. On the basis of the studies performed, the optimal mode of the n-hexane hydroisomerization process on the studied catalysts was selected. Keywords: hydroisomerization, n-hexane, nickel-containing catalysts, yield of isomers, conversion
N.F. Sadiyeva N.F. Sadiyeva, , Y.P. Cherepnova Y.P. Cherepnova, L.M. Afandiyeva L.M. Afandiyeva, S.G. Aliyeva S.G. Aliyeva
Azerbaijan Journal of Chemical News, Volume 4, pp 4-11;

The article presents a one-stage method for the synthesis of mixed diesters based on propylene glycol, synthetic petroleum- and aliphatic fatty acids (C6-C8) using a ZnO catalyst under optimal conditions - temperature -110-120°C, amount of catalyst - 1.3% wt. (by acid), molar ratio of components - acid:alcohol - 2:1.3. The properties of the synthesized mixed diesters were studied and their parameters were determined by analytical and spectral methods. In order to determine the plasticizing properties of the mixed diesters, compositions were prepared under laboratory conditions with the addition 100 m.p. of polyvinyl chloride (PVC) for 30-70 m.p. of synthesized diesters and compared them with an industrial plasticizer - dioctyl phthalate. Also, these diesters have been studied as antioxidants that improve the thermal-oxidative stability of diesel fuel. An analysis of the research results shows that the synthesized mixed diesters can be proposed as effective plasticizers for PVC and new antioxidants for diesel fuels. Keywords: propylene glycol, synthetic petroleum acids, mixed diesters, diesel fuel, antioxidant, polyvinyl chloride, plasticizer
Azerbaijan Journal of Chemical News, Volume 4, pp 40-50;

Cu(II) with 1- [2- (allylamino) -1-methylethyl] thiourea the rapid reacts to form orange complex and also it to form to form brownish complexes in presence of the phenanthroline (Phen) and α,α′ - dipyridine ( α,α′ -dip ). The absorption spectra of the Cu(II) - AMTIC system is a curve with the maximum absorbance at 415 nm and molar absorption coefficient of 1.95.104 l mol−1 cm−1. The absorption spectra of the Cu(II)- AMTIC- Phen and Cu(II) -AMTIC - α,α′-dip systems is a curve with the maximum absorbances at 437 nm and 443 nm and molar absorption coefficients of 2.94.104 l mol−1 cm−1 and 2.81.104 l mol−1 cm−1, respectively. The absorbance was linear for 0.25–2.07 mkg ml−1 of Cu(II) in the Cu(II)- AMTIC system and 0.12 –2.56 mkg ml−1 and 0.18–2.45 mkg ml−1 of Cu(II) in the Cu(II)-AMTIC- Phen and Cu(II)-AMTIC- α,α′-dipsystems, respectively. The proposed methods was successfully used in the determination of Cu(II) in several synthetic mixtures. The relative standard deviation (n = 5) was 0%–2.0%, for Cu(II), indicating that this methods are highly precise and reproducible. The results obtained agree well with synthetic mixture samples analyzed by inductively coupled plasma optical emission spectrometry (ICP-OES). Keywords: copper, 1- [2- (allylamino) -1-methylethyl] thiocarbamide, phenanthroline (Phen ) and α,α′ - dipyridine.
Azerbaijan Journal of Chemical News, Volume 4, pp 17-22;

Methods for the synthesis of ruthenium cluster complexes based on carbonyl and amine-containing organic bifunctional ligands have been developed. The structure of the obtained combinations of clusters were determined on the basis of IR spectroscopy data, thermogravimetry, and elemental analysis. Samples of ligands I and II were obtained by condensation of carboxylic acid chlorides of cyclopentane and cyclohexane with ethylene followed by replacement of the chlorine atom by amine groups. To obtain cluster complexes of ruthenium with the synthesized ligands the ruthenium trichloride salt (RuCl3) was dissolved in water, and the calculated amount of sodium borohydride was added in portions to the resulting solution under vigorous stirring in nitrogen atmosphere. Rapidly emerging black-dispersed nanoparticles of metallic ruthenium did not precipitate. When organic ligands I and II are added, the corresponding cluster compounds III and IV are formed, which gradually over 45 min. precipitated from an aqueous solution. The resulting dark-brown precipitates were washed with distilled water and dried in a nitrogen atmosphere at a temperature of 35-400C. The melting temperatures of the synthesized compounds were determined, the components for cluster III - 2060С and cluster IV - 2220С (with decomposition). The IR spectra of cluster compounds show intense absorption bands characterizing the presence of both the ketone carbonyl group and the amine fragment. The absorption bands of ketone groups in cluster compounds are shifted towards higher frequencies compared to the initial ligands. A similar picture is also observed when comparing the IR vibrations of CN bonds in the initial ligands and the corresponding cluster compounds. The results of elemental analysis confirm the structures of cluster compounds and are in complete agreement with the concept that cluster compounds are formed upon the reduction of ruthenium salts with metal hydrides in an aqueous solution. Apparently, in this case, the most stable ruthenium clusters with tetrahedral structure are formed.. Thermogravimetric analysis made it possible to establish the presence of a peak at a temperature of 3180C with a mass number of 744.8 , corresponding to a cluster combination of four ruthenium atoms. At each stage of decomposition, the experimental mass losses are in good agreement with the calculated values. Keywords: synthesis, ruthenium, cluster complexes, amine and caryonyl containing ligands, bifunctional ligands, cyclopentyl amino ketone, cyclohexyl amino ketone.
Sh.F.Tagiyeva Sh.F.Tagiyeva
Azerbaijan Journal of Chemical News, Volume 04, pp 81-86;

The reaction of hydrogenation of CO2 in flow mode at atmospheric pressure on Siral aluminosilicates with 1, 10, and 40 wt.% SiO2 and containing Co and Co-Pd has been studied. The synthesized catalysts were characterized by XRD and EPR spectroscopy. It has been established that on catalysts containing only cobalt, at a reaction temperature of ≤ 300oC, practically only methane is formed, and at a reaction temperature of T ≥ 300oC, methane and no more than 1% CO are formed. It is shown that with an increase in the SiO2/Al2O3 ratio, a decrease in the methane yield is observed. The introduction of palladium into the composition of the Co/Siral catalyst stimulates the formation of methanol, the yield of which increases with an increase in the reaction temperature and reaches its maximum value at a reaction temperature of 500°C for the Co,Pd/Siral-10 catalyst. The mechanism of the reaction of CO2 hydrogenation to methanol and the role of palladium in this reaction are discussed. Keywords: carbon dioxide, hydrogenation, methane, methanol, Siral, Pd, Co.
L.Z.Vazirova L.Z.Vazirova
Azerbaijan Journal of Chemical News, Volume 04, pp 73-80;

[email protected] The synthesis of diazacrown ethers was carried out using efficient methods. New dibenzoazacrown ethers with functionally substituted hydroxyl and amino groups in the macrocyclic (MC) ring have been synthesized. The structure of the synthesized crown compounds - determined by IR mass NMR, -spectroscopy. Methods for the preparation of transition metal complexes with organic functional ligands based on diazacrown ethers having four, five, and six coordinating atoms in the rings. The synthesized new diazacrown ethers, due to hydroxyl and amino groups, increase the degree of intermolecular interactions and transfer from a two-dimensional structure to a three-dimensional one, which has an increased their biological activity. Keywords: Crown ethers, transition metals, biological activity,complex.
T.Ch.Taghiyeva T.Ch.Taghiyeva
Azerbaijan Journal of Chemical News, Volume 04, pp 60-64;

The phase composition of binary zinc-containing catalysts was studied by X-ray diffraction. It was found that the formation of two phases of the initial oxides is observed in all the studied catalytic systems. So, samples of the Zr-Zn-O catalytic system consist of phases of zirconium and zinc oxides, samples of the Ce-Zn-O catalytic system consist of phases of cerium and zinc oxides, while samples of the Mg-Zn-O catalytic system consist of phases of magnesium and zinc oxides. It has been established that the crystallinity of binary zinc-containing catalysts varies in the range from 70% to 89%. Keywords: X-ray phase analysis, binary catalysts, zinc oxide, cerium oxide, zirconium oxide, magnesium oxide
I. J. Ahmedova I. J. Ahmedova
Azerbaijan Journal of Chemical News, Volume 04, pp 65-72;

Conversion of isobutene on a high silica zeolite catalyst in the temperature interval (473-773 K) has been studied. The formation of liquid reaction products is observed at the temperature 473 K, whereas gaseous products form after 523K. Maximum yield of liquid products is observed at the temperature 573 K and makes up 67 %. With increase of contact time the yield of liquid reaction products shifts towards high temperatures. Formation of aromatic hydrocarbons is observed at the reaction temperature higher than 573 K. At the temperature 673 K the main mass of liquid products consists of aromatic hydrocarbons. The activity of H-form of HSZ (HHSZ) in the process of conversion of isobutene in the formation of liquid reaction products occurs only when 6-8% of seal products accumulate on its surface. By the method of ammonia adsorption on the initial and coked catalyst their acidic properties have been studied. It was shown that at the beginning of the process decrease in acidic properties of the catalyst occurs due to accumulation of seal products on it. Key words: catalyst, activity, isobutene, zeolite, seal products, temperature, heterogen, chromatography, spectroscopy.
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