炭包覆氧化铝负载镍催化剂的制备和表征及其催化加氢性能

催化学报 , 2011, 32(1): 111-117. doi: 10.3724/SP.J.1088.2011.00729

炭包覆氧化铝负载镍催化剂的制备和表征及其催化加氢性能

李海涛 ^1, , 陈昊然 ^2, , 张因 ^3, , 高春光 ^4, , 赵永祥 ^5,

1.山西大学化学化工学院精细化学品教育部工程研究中心,山西太原030006

2.山西大学化学化工学院精细化学品教育部工程研究中心,山西太原030006

3.山西大学化学化工学院精细化学品教育部工程研究中心,山西太原030006

4.山西大学化学化工学院精细化学品教育部工程研究中心,山西太原030006

5.山西大学化学化工学院精细化学品教育部工程研究中心,山西太原030006

基金项目: 国家自然科学基金(21073114) 山西省科技攻关计划(20090321059)

关键词：镍 , 炭包覆氧化铝 , 负载型催化剂 , 1,4-丁二醇 , 加氢

Preparation and Characterization of Carbon-Covered Alumina Supported Ni Catalyst and Its Catalytic Performance for Hydrogenation

以炭包覆A12O3(CCA)为载体,采用等体积浸渍法制备了17%Ni/CCA催化剂,采用热重-差示量热扫描、扫描电镜、X射线光电子能谱、N2物理吸附、H2程序升温还原和X射线衍射等手段对样品进行了表征,并用于粗1,4-丁二醇加氢反应中.结果表明,炭的引入显著改变了Al2O3的表面性质、负载Ni的存在形态以及金属.载体间的相互作用,因而不同炭含量的Ni/CCA催化剂在粗1,4-丁二醇加氢反应中表现出不同的催化活性.当载体中炭含量为11.6%时,催化剂中的Ni以无定形状态高度分散于载体表面,同时具有适宜的金属.载体相互作用及较好的还原性能,因而其加氢活性最高.

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