天然气化工Issue(3)：48-52,5.
K2CO3溶液处理对费托合成熔铁催化剂性能的影响
Effect of K2CO3 aqueous solution treatment on fused iron catalysts for Fischer-Tropsch synthesis
摘要
Abstract
Fused iron catalysts for Fischer-Tropsch synthesis (FTS)were prepared by induction furnace and then treated with K2CO3 aqueous solution. ICP, XRD and H2-TPR were used to the catalysts, and the FTS performances of the catalysts were investigated in a fixed-bed reactor under the conditions of 220 ℃-350 ℃, 2.0 MPa, H2/CO mole ratio of 2, GHSV of 3000h-1. The results showed that Al and Si introduced from graphite crucible reacted with iron oxide to form solid solution, which severely suppressed the reduction and surface basicity of catalysts and brought high C2-C4 selectivity in FTS. After treatment with K2CO3 aqueous solution, the solid solution was partly dissolved and the extent of reduction gradually increased. As the concentration of K2CO3 aqueous solution increased, surface basicity of catalysts enhanced, which made CH4 selectivity decreased from 44.82% to 28.82%and C2-C4 olefins selectivity improved.关键词
费托合成/熔铁催化剂/感应炉/固熔体/碳酸钾溶液Key words
Fischer-Tropsch synthesis/fused iron catalyst/induction furnace/solid solution/potassium carbonate solution分类
化学引用本文复制引用
孙桃梅,张娟,陈建刚,马彩莲,孔祥鹏,丁健,张奎,文闻..K2CO3溶液处理对费托合成熔铁催化剂性能的影响[J].天然气化工,2014,(3):48-52,5.基金项目
国家自然科学基金资助项目（21373254），武汉凯迪工程技术研究总院有限公司资助项目（2013WT101），煤转化国家重点实验室自主研究课题资助项目 （）
