Hydroxyl Enhanced Structured Pt/Nix/a-AlOOH Catalyst for Formaldehyde Oxidation at Room Temperature
Open Access
- 1 January 2020
- journal article
- research article
- Published by Scientific Research Publishing, Inc. in Modern Research in Catalysis
- Vol. 09 (02), 21-34
- https://doi.org/10.4236/mrc.2020.92002
Abstract
Ni promoted structured plate-type Pt/Nix/a-AlOOH catalysts were developed to enhance the amount of hydroxyl group, therefore improving the catalytic activities for formaldehyde oxidation at room temperature. The analyzation results by XRD and HRTEM indicate that two kinds of materials, AlOOH and NiOOH, are detected on the surface of Pt/Nix/a-AlOOH. It can be seen from the result of TG that the hydroxyl group on the catalyst surface increased after Ni was loaded. Furtherly, XPS results show that the percentage of hydroxyl groups which can effectively absorb formaldehyde increases from 36.4% to 72.8% by doping Ni. In addition, the content of Pt0 increased from 27.5% to 45%. The results indicate that optimized Pt1.15/Ni3.1/a-AlOOH has the best catalytic activity with the CO2 conversion is 88% at 25°C and 100% at 40°C, while CO2 conversion over Pt1.2/a-AlOOH is 56% at 25°C and 100% at 100°C respectively. Hence, the Ni promoted plate-type Pt/a-AlOOH possesses high efficiency and it provides a new idea for catalyst design of formaldehyde oxidation.Keywords
This publication has 39 references indexed in Scilit:
- Mechanistic study on formaldehyde removal over Pd/TiO2 catalysts: Oxygen transfer and role of water vaporChemical Engineering Journal, 2013
- Three-dimensionally ordered macroporous Au/CeO2-Co3O4 catalysts with nanoporous walls for enhanced catalytic oxidation of formaldehydeApplied Catalysis B: Environmental, 2012
- Effect of Crystalline State of Anodized Porous Al2O3/Al as Supports by HydrationJournal of Inorganic Materials, 2012
- High surface area Au/CeO2 catalysts for low temperature formaldehyde oxidationApplied Catalysis B: Environmental, 2011
- Complete Oxidation of Formaldehyde at Room Temperature Using TiO2 Supported Metallic Pd NanoparticlesACS Catalysis, 2011
- Resolving surface chemical states in XPS analysis of first row transition metals, oxides and hydroxides: Cr, Mn, Fe, Co and NiApplied Surface Science, 2011
- Formaldehyde in the Indoor EnvironmentChemical Reviews, 2010
- OMS-2 Catalysts for Formaldehyde Oxidation: Effects of Ce and Pt on Structure and Performance of the CatalystsCatalysis Letters, 2009
- Pt/MnOx–CeO2 catalysts for the complete oxidation of formaldehyde at ambient temperatureApplied Catalysis B: Environmental, 2008
- Effect of Supports on the Gold Catalyst Activity for Catalytic Combustion of CO and HCHOCatalysis Letters, 2005