The preparation and activity of Cu-Fe-Zr-Ce based catalysts for water gas shift

2nd International Conference on New Material and Chemical Industry

材料科学;化学工业

Wu, H.D.^1 ; Liu, T.S.^1 ; Liu, H.Z.^1

College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou

545006, China^1

关键词: Active components;    Catalyst composition;    Cubic crystalline;    Iron components;    Precipitation methods;    Reducing capacity;    Reduction properties;    Strong interaction;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/292/1/012121/pdf
DOI  :  10.1088/1757-899X/292/1/012121

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

CeO2-ZrO2composite oxide was synthesized with precipitation method as support and CuaFeb(ZrCe4)8Oxcatalysts were prepared by impregnation; X-ray diffraction, H2temperature program reduction, and scanning electron microscope techniques were jointly used to characterize the crystal phases and reduction properties of catalysts. Then the activity of catalysts in water gas shift was studied, thus investigated how catalyst composition impacted the water gas shift. Conclusions drew from the results can be briefly stated. CuaFeb(ZrCe4)8Oxwas provided with stable cubic crystalline framework and Cu and Fe, as the active components, was highly dispersed on the surface of supports in the form of CuO and Fe2O3respectively. The strong interactions between copper and iron component enhanced the reducing capacity of CuO and Fe2O3. CuaFeb(ZrCe4)8Oxcatalysts exhibited high catalytic activity and selectivity while the main active components were Cu and Fe3O4. The CO conversion rate reached 96% when Cu7Fe3(ZrCe4)8Oxcatalysts was used in water gas shift at 623K and the only products were H2and CO2. The activity was still desirable even the catalysts was applied at 723K.