以稀土氧化物为助剂的乙醇水蒸气重整制氢催化剂研究  

Earth Oxides Promoted Catalysts for Hydrogen Generation from Ethanol Steam Reforming

作　　者：白莹[1] 吴锋 丁洁 吴川 王国庆[1] 

机构地区：[1]北京理工大学化工与环境学院

出　　处：《中国稀土学报》2006年第z2期50-53,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家973计划项目(2002CB211800);中国-希腊2005~2007科技合作项目(9);北京理工大学优秀青年教师资助计划(00Y05-21)

摘　　要：采用浸渍法,以γ-Al2O3为载体,稀土(Ce,Nd)氧化物为助剂,金属Ni为活性物,制备了用于乙醇水蒸气重整制氢的复合催化剂.该类催化剂在400～550 ℃的较低温度范围内具有较高的氢气产率.不管助剂为何种稀土(Ce,Nd)氧化物,当其含量一定时,活性组分Ni的含量为15%的催化剂均具有最佳活性;当活性组分Ni一定,助剂的含量为10%时,催化剂的产氢率最大.采用10%CeO2/15%Ni/γ-Al2O3催化剂时,乙醇重整制氢的产氢率可达5.2以上.Earth oxides promoted composite catalysts were synthesized via an impregnation method.The as-prepared samples have high catalytic activities for hydrogen generation from ethanol steam reforming in a relatively low temperature range of 400～550 ℃.It is found that when the content of the earth oxide is fixed to a constant,the catalyst with 15% Ni-loading has the best catalytic activity;while for a fixed Ni-loading,the catalyst promoted by 10% earth oxide shows the best catalytic activity.Among all the composite catalysts,10%CeO_2/15%Ni/γ-Al_2O_3 can achieve a high hydrogen generation rate over 5.2.

关 键 词：乙醇水蒸气重整 制氢 稀土氧化物 氧化钕 氧化铈 

分 类 号：O643[理学—物理化学]