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CO hydrogenation to light alkenes over Mn/Fe catalysts prepared by coprecipitation and sol-gel methods
Wang, C; Wang, QX; Sun, XD; Xu, LY; Xu LY(徐龙伢); Xu LY(徐龙伢)
关键词Co Hydrogenation Light Alkenes Manganese Oxide Iron Catalysts
刊名CATALYSIS LETTERS
2005-11-01
DOI10.1007/s10562-005-8011-3
105期:1-2页:93-101
收录类别SCI
文章类型Article
部门归属8
项目归属804
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]FISCHER-TROPSCH SYNTHESIS ; MANGANESE OXIDE CATALYSTS ; X-RAY-DIFFRACTION ; CARBON-MONOXIDE ; IRON CATALYSTS ; OLEFIN SELECTIVITY ; REDUCTION ; BEHAVIOR ; SYNGAS ; SPECTROSCOPY
英文摘要CO hydrogenation to light alkenes was carried out on manganese promoted iron catalysts prepared by coprecipitation and sol-gel techniques. Addition of manganese in the range of 1-4 mol.% by means of coprecipitation could improve notably the percentage of C-2 (=) similar to C-4 (=) in the products, but it was not so efficient when the sol-gel method was employed. XRD and H-2-TPR measurements showed that the catalyst samples giving high C-2 (=) similar to C-4 (=) yields possessed ultra. ne particles in the form of pure alpha-(Fe1-xMnx)(2)O-3, and high quality in lowering the reduction temperature of the iron oxide. Furthermore, these samples displayed deep extent of carburization and different surface procedures to the others in the tests of Temperature Programmed Surface Carburization (TPSC). The different surface procedures of these samples were considered to have close relationship with the evolving of surface oxygen. It was also suggested that for the catalysts with high C-2 (=) similar to C-4 (=) yields, the turnover rate of the active site could be kept at a relatively high level due to the improved reducing and carburizing capabilities. Consequently, there would be a large number of sites for CO adsorption/dissociation and an enhanced carburization environment on the catalyst surface, so that the process of hydrogenation could be suppressed relatively to a low level. As a result, the percentage of the light alkenes in the products could be raised.
语种英语
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WOS记录号WOS:000232697100015
引用统计
被引频次:36[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/93157
专题中国科学院大连化学物理研究所
通讯作者Xu LY(徐龙伢); Xu LY(徐龙伢)
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Wang, C,Wang, QX,Sun, XD,et al. CO hydrogenation to light alkenes over Mn/Fe catalysts prepared by coprecipitation and sol-gel methods[J]. CATALYSIS LETTERS,2005,105(1-2):93-101.
APA Wang, C,Wang, QX,Sun, XD,Xu, LY,徐龙伢,&徐龙伢.(2005).CO hydrogenation to light alkenes over Mn/Fe catalysts prepared by coprecipitation and sol-gel methods.CATALYSIS LETTERS,105(1-2),93-101.
MLA Wang, C,et al."CO hydrogenation to light alkenes over Mn/Fe catalysts prepared by coprecipitation and sol-gel methods".CATALYSIS LETTERS 105.1-2(2005):93-101.
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