Effect of Ce-doping on catalysts derived from hydrotalcite-like precursors for COS hydrolysis
来源期刊：JOURNAL OF RARE EARTHS2010年第S1期
论文作者：赵顺征 易红宏 唐晓龙 宁平 王红妍 何丹
文章页码：329 - 333
摘 要：In order to investigate the effect of Ce-doping on the catalysts derived from hydrotalcite-like precursors for carbonyl sulfide（COS） hydrolysis,a series of Zn-Ni-Al-Ce hydrotalcite-like compounds were prepared by co-precipitation method and the catalytic activity of their derived composite oxides were studied at 50 oC.The effect on the structural properties caused by Ce doping was studied by the X-ray diffractometer（XRD）,scanning electron microscopy（SEM） and energy dispersive spectrometer（EDS）.The catalytic activities results showed that addition of Ce enhanced the catalytic activities significantly,but excessive Ce-doping had a negative effect on COS hydrolysis.XRD,SEM and EDS results illustrated that,compared with the Ce-free sample,the particle size of oxide solids decreased and the degree of dispersion increased due to Ce doping.
赵顺征，易红宏，唐晓龙，宁平，王红妍，何丹
Faculty of Environmental Science and Engineering,Kunming University of Science and Technology
摘 要：In order to investigate the effect of Ce-doping on the catalysts derived from hydrotalcite-like precursors for carbonyl sulfide（COS） hydrolysis,a series of Zn-Ni-Al-Ce hydrotalcite-like compounds were prepared by co-precipitation method and the catalytic activity of their derived composite oxides were studied at 50 oC.The effect on the structural properties caused by Ce doping was studied by the X-ray diffractometer（XRD）,scanning electron microscopy（SEM） and energy dispersive spectrometer（EDS）.The catalytic activities results showed that addition of Ce enhanced the catalytic activities significantly,but excessive Ce-doping had a negative effect on COS hydrolysis.XRD,SEM and EDS results illustrated that,compared with the Ce-free sample,the particle size of oxide solids decreased and the degree of dispersion increased due to Ce doping.
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