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

Authors

  • Dr. Na Ji,

    1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, CAS, Dalian 116023 (PR China), Fax: (+86) 411-84685940
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  • Dr. Mingyuan Zheng,

    1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, CAS, Dalian 116023 (PR China), Fax: (+86) 411-84685940
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  • Prof. Aiqin Wang,

    1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, CAS, Dalian 116023 (PR China), Fax: (+86) 411-84685940
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  • Prof. Tao Zhang,

    Corresponding author
    1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, CAS, Dalian 116023 (PR China), Fax: (+86) 411-84685940
    • State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, CAS, Dalian 116023 (PR China), Fax: (+86) 411-84685940
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  • Prof. Jingguang G. Chen

    Corresponding author
    1. Department of Chemical Engineering, University of Delaware, Newark, DE 19716 (USA), Fax: (+1) 302-831-2085
    • Department of Chemical Engineering, University of Delaware, Newark, DE 19716 (USA), Fax: (+1) 302-831-2085
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Abstract

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 Ni–W2C/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.

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