Dispersion of Rh-WxC nanocomposites on carbon nanotubes by one-pot carburization for synthesis of higher alcohols from syngas

被引：9
作者：
Liu, Guoqing [1 ]
Fang, Huihuang [1 ]
Wang, Gang [1 ]
Liu, Nan [1 ]
Liu, Jia [1 ]
Huang, Lele [1 ]
Liang, Xuelian [1 ]
Yuan, Youzhu [1 ]
机构：
[1] Xiamen Univ, Coll Chem & Chem Engn, Collaborat Innovat Ctr Chem Energy Mat, State Key Lab Phys Chem Solid Surfaces,Natl Engn, Xiamen 361005, Peoples R China
来源：
FUEL | 2021年 / 305卷
基金：
中国国家自然科学基金;
关键词：
Syngas; Higher alcohols; Rh-based catalyst; Tungsten carbide; Carbon nanotube; SYNTHESIS GAS CONVERSION; TRANSITION-METAL CARBIDE; CO HYDROGENATION; DOPED CARBON; SELECTIVE CONVERSION; CATALYTIC CONVERSION; METHANOL SYNTHESIS; TUNGSTEN CARBIDES; WATER; ETHANOL;
D O I：
10.1016/j.fuel.2021.121533
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The catalytic conversion of syngas to higher alcohols (HAs), especially C2+-OH oxygenates, has high atomic efficiency. However, catalysts with satisfactory activity and stability are still highly desired. Herein, nano composites of Rh nanoparticles (NPs) and tungsten carbides on carbon nanotubes (Rh-WxC/CNT) were prepared by one-pot method for the conversion of syngas to HAs. The Rh-WxC/CNT catalyst outperformed the Rh-WxC dispersed on carbon spheres in CO conversion, alcohol selectivity, and stability. Characterizations showed that the anchoring effects induced by CNTs maximized the exposure of Rh active sties and effectively inhibited the deterioration of WxC during the catalytic conversion of syngas. The synergistic effects and strong interactions among Rh NPs, WxC, and CNTs were responsible for the enhanced activity and stability of Rh-WxC/CNT. This strategy provides an effective method to prepare Rh-based catalysts with high performance for the synthesis of HAs by CO hydrogenation.
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页数：12
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