燃料化学学报2001，Vol.29Issue(2)：149-153,5.
硫化态CO-Mo-K/AC合成醇催化剂的EXAFS研究
EXAFS STUDY ON SULFIDED Co-Mo-K/AC CATALYSTS
FOR ALCOHOL SYNTHESIS
李忠瑞 1伏义路 1姜明 1胡天斗 2刘涛 2谢亚宁2
作者信息
- 1. 中国科技大学化学物理系,
- 2. 中国科学院高能物理研究所,
- 折叠
摘要
Abstract
The structures of sulfided Co-Mo-K/AC catalysts were studied by means of XRD and XAFS. Activities for mixed alcohol synthesis via CO hydrogenation were used to measure the catalytic properties of these catalysts. On the activated carbon support, molybdenum is mainly present as MoS2 species, while cobalt mainly in the form of "Co-MoS" phase with the low Co-loading and partly in a Co9S8-like structure with higher Co-loading. The catalysts demonstrate outstanding performance for higher alcohol synthesis with the promotion of cobalt. The activity for alcohol formation optimizes at Co/Mo atom ratio of 0.5 due to the maximum amount of surface"Co-Mo-S" active sites. Co species operate as a synergistic system, rather than independently from the intercalated MoS2 phase (physical mixture).关键词
Mo基催化剂/Co助剂/合成低碳醇/"Co-Mo-S"/EXAFS分类
化学化工引用本文复制引用
李忠瑞,伏义路,姜明,胡天斗,刘涛,谢亚宁..硫化态CO-Mo-K/AC合成醇催化剂的EXAFS研究[J].燃料化学学报,2001,29(2):149-153,5.
