高载量、高活性Ni/Al_2O_3催化剂的制备及其芳环加氢催化反应(英文)  

Preparation of Highly Loaded and Active Ni/Al_2O_3 Catalysts for the Hydrogenation of Aromatic Rings

作　　者：胡胜华[1] 薛明伟[1] 陈慧[1] 孙寅璐[1] 沈俭一[1] 

机构地区：[1]南京大学化学化工学院介观化学教育部重点实验室,江苏南京210093

出　　处：《催化学报》2011年第6期917-925,共9页

基　　金：supported by the National Basic Research Program of China(973 Program,2005CB221400);the National Natural Science Foundation of China(20673055 and 21073089);Industrial Supporting Project of Jiangsu Province(BE2009145)~~

摘　　要：使用共沉淀法制备了担载量很高的Ni/Al2O3催化剂,通过正丁醇干燥处理,提高了催化剂的表面积和担载镍的分散度.实验发现,镍的担载量和干燥过程对催化剂的表面积、孔结构及金属镍的还原度和分散度影响很大.经过正丁醇处理的80%Ni/Al2O3-B催化剂具有较高的表面积,而担载镍的还原度和分散度也显著提高,使得催化剂具有很高的活性金属镍表面积(90m2/g-催化剂),该催化剂对甲苯有较强的吸附作用,在甲苯和苯酚的芳环加氢反应中表现出了很高的催化活性.Highly loaded and dispersed Ni/Al2O3-B catalysts were prepared by the co-precipitation method with an n-butanol drying process.The loading of nickel and drying process were found to be the two key factors in determining the surface area and pore structures of catalysts as well as the reducibility and dispersion of supported nickel.The 80%Ni/Al2O3-B treated with n-butanol during the drying process exhibited the high surface area and high reducibility and dispersion of supported nickel,leading to the high active nickel surface area （90 m2/g-catalyst）.It adsorbed toluene strongly and thus exhibited high activity for the hydrogenation of aromatic rings in toluene and phenol.

关 键 词：镍 氧化铝 正丁醇干燥 活性金属表面积 微量吸附量热 甲苯加氢 苯酚加氢 

分 类 号：O643.32[理学—物理化学]