掺杂氧化物对Ni/CeO_2催化剂的催化性能的影响  

The effect of the oxide doping on the property of Ni/CeO_2 catalyst

作　　者：李凝[1] 王一君[1,2] 高新航[1,2] 韦立宁[1,2] 

机构地区：[1]广东石油化工学院化学工程与环境工程学院,广东茂名525000 [2]桂林理工大学化学与生物工程学院,广西桂林541004

出　　处：《应用化工》2014年第1期1-4,共4页Applied Chemical Industry

基　　金：国家自然科学基金项目(21166006);广东石油化工学院引进人才项目(513035)

摘　　要：在Ni/CeO2中掺杂Fe2O3、La2O3和MnO2,并用XRD、TPR、TPD等对掺杂的催化剂的晶相结构、表面性能等进行了表征。结果表明,掺杂Fe2O3有利于比表面积增大、CeO2粒度减小和晶格氧的形成,增强催化剂的乙醇吸附能力和氧化能力,提高催化剂的活性与抗积碳性。Ni/Fe2O3-CeO2催化剂在500℃时,乙醇转化率高达82.4%,氢气选择性69.3%。Doping Fe2O3,La2O3 and MnO2 in Ni/CeO2,the crystalline structures and surface properties were characterized by XRD,TPR and TPD,etc. The results show that doping Fe2O3 is conducive to the increase of specific surface area,the decrease of the granularity of CeO2,the formation of lattice oxygen,enhancing ethanol adsorption and oxidation ability of the catalyst and improving the activity and resistance to carbon deposition of the catalyst. When Ni/Fe2O3-CeO2 catalyst was at 500 ℃,the conversion rate of ethanol was as high as 82. 4%,the selectivity of the hydrogen was reached 69. 3%.

关 键 词：乙醇部分氧化 NI CEO2 掺杂 

分 类 号：TQ51[化学工程] TK91[动力工程及工程热物理]