物理化学学报Issue(5)：1063-1072,10.DOI:10.3866/PKU.WHXB201303072
醇添加对钴基催化剂费托合成反应的影响
Effect of Alcohol Addition on Fischer-Tropsch Synthesis over Cobalt-Based Catalysts
摘要
Abstract
CnH2n+1OH (n=2, 3, 5, 6) primary alcohol activation, hydrogenation and its additional effects on the performance of the Fischer-Tropsch (FT) synthesis over a cobalt catalyst were investigated in a fixed bed micro-reactor. Al products were analyzed using an on-line gas chromatography. The diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) was used to investigate intermediates on the catalyst surface. In the presence of argon or hydrogen, CnH2n+1OH underwent two main reactions:direct de-carbonylation to produce (CH2)n-1 hydrocarbons, and dehydration to produce (CH2)n hydrocarbons. The addition of lower carbon number alcohol (ethanol or 1-propanol) into the FT synthesis reaction had no significant effect on the hydrocarbon product distribution. While co-feeding higher carbon number alcohol (1-pentanol or 1-hexanol) into the FT synthesis reaction, the selectivity to hydrocarbons with carbon numbers greater than or equal to n-1 increased markedly because of the additiveʹs chain initiation on the catalyst surface.关键词
钴基催化剂/费托合成/全产物在线分析/C2-C6伯醇/添加实验/反应机理Key words
Cobalt-based catalyst/Fischer-Tropsch synthesis/On-line analysis of al products/C2-C6 primary alcohols/Co-feeding experiment/Reaction mechanism分类
化学化工引用本文复制引用
姚芳芳,吴宝山,周利平,高军虎,李莹,李永旺..醇添加对钴基催化剂费托合成反应的影响[J].物理化学学报,2013,(5):1063-1072,10.基金项目
国家重点基础研究发展计划(973)(2011CB201401)和中国科学院知识创新工程项目(KJCX2-YW-N41)资助.The project was supported by the National Key Basic Research Program of China (973)(2011CB201401) and Intellectual Innovation Project of Chinese Academy of Sciences (KJCX2-YW-N41) （973）
