Nickel-Promoted Tungsten Carbide Catalysts for Cellulose Conversion: Effect of Preparation Methods

被引：92

作者：

Ji, Na ^{[1
]}

Zheng, Mingyuan ^{[1
]}

Wang, Aiqin ^{[1
]}

Zhang, Tao ^{[1
]}

Chen, Jingguang G. ^{[2
]}

机构：

[1] CAS, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

[2] Univ Delaware, Dept Chem Engn, Newark, DE 19716 USA

来源：

CHEMSUSCHEM | 2012年 / 5卷 / 05期

基金：

美国国家科学基金会;

关键词：

biomass; heterogeneous catalysis; nickel; tungsten; X-ray diffraction; ETHYLENE-GLYCOL; HYDRAZINE DECOMPOSITION; PLATFORM CHEMICALS; BIOMASS; FUELS;

D O I：

10.1002/cssc.201100575

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of Ni-promoted W2C catalysts was prepared by means of a post-impregnation method and evaluated for the catalytic conversion of cellulose into ethylene glycol (EG). Quite different from our previously reported NiW2C/AC catalysts, which were prepared by using the co-impregnation method, the introduction of Ni by the post-impregnation method did not cause catalyst sintering, but resulted in redispersion of the W component, which was identified and characterized by means of XRD, TEM, and CO chemisorption. The highly dispersed Ni-promoted W2C catalyst was very active and selective in cellulose conversion into EG, with a 100?% conversion of cellulose and a 73.0?% yield in EG. The underlying reason for the enhanced catalytic performance was most probably the significantly higher dispersion of active sites on the catalyst.

引用

页码：939 / 944

页数：6

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