燃料化学学报2018，Vol.46Issue(6)：680-691,12.
合成气直接转化制低碳烯烃催化剂设计及反应条件优化
Design of the catalysts for direct conversion of syngas to light olefins and optimization of the reaction conditions
摘要
Abstract
ZSM-5 catalysts with same particle size and different Si/Al molar ratio were synthesized successfully by hydrothermal synthesis method, and then, Fe-Cu-K-containing ZSM-5 samples were prepared via aqueous incipient wetness impregnation.The effect of Si/Al molar ratio on the FTO reaction was systematically investigated.The results indicated that the conversion of CO and selectivity to light olefins strongly depended on the reaction conditions and the acidic properties of the zeolite.The ZSM-5/FeCuK catalyst with a Si/Al molar ratio of 50 possessed the highest CO conversion (84.71% ) and selectivity to light olefins (32.08% ) compared with others.H2-TPR results showed that the reduction of Fe phase in Z50/FeCuK was the highest.With the combination of DRIFTS, TG-DTA and XRD techniques, it was found that there were more carbonate and hydrocarbon species adsorbed on the surface of Z50/FeCuK and more FeCxphases were formed after reaction compared with the other catalysts.Finally, the reaction conditions were optimized and the results showed that the catalyst had the best performance at 310℃, H2/CO(volume ratio)=2 and 1.0 MPa.关键词
ZSM-5分子筛/酸性/FTO/CO加氢Key words
ZSM-5 molecular sieve/acidic property/FTO/CO hydrogenation分类
化学引用本文复制引用
田育峰,王浩,董梅,秦张峰,樊卫斌,王建国..合成气直接转化制低碳烯烃催化剂设计及反应条件优化[J].燃料化学学报,2018,46(6):680-691,12.基金项目
The project was supported by the National Natural Science Foundation of China (21773281), Shanxi Scholarship Council of China (2014-102) and Department of Human Resource and Social Security of Shanxi Province.国家自然科学基金(21773281),山西省回国留学人员科研项目(2014-102)和山西省人社厅留学回国人员择优资助项目资助 （21773281）
