Effect of Ce-doping on catalysts derived from hydrotalcite-like precursors for COS hydrolysis  

作　　者：赵顺征 易红宏 唐晓龙 宁平 王红妍 何丹 

机构地区：[1]Faculty of Environmental Science and Engineering,Kunming University of Science and Technology

出　　处：《Journal of Rare Earths》2010年第S1期329-333,共5页稀土学报（英文版）

基　　金：Project supported by National Natural Science Foundation (50908110);National High Technology Research and Development Program of China (2008AA062602);China Postdoctoral Science Foundation (20090451431);Young and Middle-aged Academic and Technical Back-up Personnel Program of Yunnan Province (2007PY01-10)

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.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.

关 键 词：Ce-doping hydrotalcite-like compounds carbonyl sulfide HYDROLYSIS rare earths 

分 类 号：O643.36[理学—物理化学]