Iron carbide promoted K/β-Mo2C for higher alcohols synthesis

被引：25
|
作者：
Wang, Ning [1 ,2 ]
Fang, Kegong [1 ]
Jiang, Dong [1 ]
Li, Debao [1 ]
Sun, Yuhan [1 ]
机构：
[1] Chinese Acad Sci, State Key Lab Coal Convers, Shanxi Inst Coal Chem, Taiyuan 030001, Shanxi, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
来源：
CATALYSIS TODAY | 2010年 / 158卷 / 3-4期
基金：
中国国家自然科学基金;
关键词：
Iron carbide modified; K/beta-Mo(2)C; Higher alcohols synthesis; Syngas; FISCHER-TROPSCH SYNTHESIS; CARBON-MONOXIDE HYDROGENATION; SYNTHESIS GAS; MIXED ALCOHOLS; SYNTHESIS CATALYSTS; MOLYBDENUM; SPECTROSCOPY; CONVERSION; REDUCTION; SYNGAS;
D O I：
10.1016/j.cattod.2010.03.079
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Iron carbide promoted K/beta-Mo(2)C catalysts were prepared and tested for higher alcohols synthesis. The results revealed that beta-Mo(2)C produced mainly hydrocarbons, but the addition of potassium resulted in a remarkable selectivity shift from hydrocarbons to alcohols and then a higher selectivity to C(2)(+)OH over beta-Mo(2)C. Moreover, it was found that iron carbide further enhanced the selectivity of higher alcohols, showing the optimum at 1/6 of Fe/Mo molar ratio. The corresponding characterization suggested that there might be a synergistic effect of iron carbide and K/beta-Mo(2)C, i.e. the formation of "K-Fe-Mo-C" species which favored the alcohols synthesis. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：241 / 245
页数：5
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