The preparation and activity of Cu-Fe-Zr-Ce based catalysts for water gas shift
CeO2-ZrO2 composite oxide was synthesized with precipitation method as support and CuaFeb(ZrCe4)8Ox catalysts were prepared by impregnation; X-ray diffraction,H2 temperature 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)8Ox was 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 Fe2O3 respectively.The strong interactions between copper and iron component enhanced the reducing capacity of CuO and Fe2O3.CuaFeb(ZrCe4)8Ox catalysts exhibited high catalytic activity and selectivity while the main active components were Cu and Fe3O4.The CO conversion rate reached 96%when Cu7Fe3(ZrCe4)8Ox catalysts was used in water gas shift at 623K and the only products were H2 and CO2.The activity was still desirable even the catalysts was applied at 723K.
H D Wu T S Liu H Z Liu
College of Biological and Chemical Engineering,Guangxi University of science and technology,Liuzhou,545006,P.R.China
国际会议
三亚
英文
1-7
2017-11-18（万方平台首次上网日期，不代表论文的发表时间）