hcp-Co基费托合成催化剂的研究进展  

Research progress on hcp-Co-based catalyst for Fischer-Tropsch synthesis

作　　者：王凯 代惠 李贝 王彪 宁文生[1] Wang Kai;Dai Hui;Li Bei;Wang Biao;Ning Wensheng(College of Chemical Engineering,Zhejiang University of Technology,Hangzhou Zhejiang 310014,China)

机构地区：[1]浙江工业大学化学工程学院

出　　处：《石油化工》2019年第9期968-975,共8页Petrochemical Technology

基　　金：浙江省自然科学基金项目（LY14B030003）;国家科技支撑计划项目（2014BAD02B05）

摘　　要：由于Co基费托(F-T)合成催化剂具有优异的催化性能,一直受到学术界和工业界的广泛关注。近年来人们发现Co基催化剂对F-T合成反应的催化活性与催化剂晶体结构有紧密关系,六方密堆积(hcp)相Co基催化剂的催化活性大于面心立方(fcc)相Co基催化剂的催化活性。综述了hcp-Co基F-T合成催化剂的最新研究进展,介绍了hcp-Co的晶体结构、B5活性位点的分布、hcp-Co不同晶面对C—C链增长机理的理论计算结果及制备hcp-Co基催化剂的实验方法,展望了Co基催化剂的未来发展方向。Co-based catalyst has been widely concerned by academia and industrial circles due to the excellent catalytic performance thereof.In recent years,it has been found that the catalytic activity of Co-based catalyst for Fischer-Tropsch synthesis is closely related to its crystal structure,the catalytic activity of hexagonal close-packed(hcp)Co-based catalyst is much better than that of face-centered cube(fcc)Co-based catalyst.This article gives an overview of the latest research progress on hcp-Co-based catalyst for Fischer-Tropsch synthesis,introduces the crystal structure of hcp-Co,the distribution of B5 active site,the theoretical calculation results of the C—C chain growth mechanism for different crystal surfaces of hcp-Co catalyst and the preparation method for hcp-Co-based catalyst,and makes prospectes on the development direction of Co-based catalyst.

关 键 词：费托合成 hcp-Co 还原-碳化-还原活化 晶体结构 B5位点 C—C链增长机理 

分 类 号：TQ426.81[化学工程]