Preparation and Catalytic Performance Evaluation of Multi-metal Catalysts for Conversion of Tetrachloromethaneto Trichloromethane by Liquid Phase Hydrogenation

doi:10.11944/j.issn.1000-0518.2017.02.160251

Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (2): 242-244.DOI: 10.11944/j.issn.1000-0518.2017.02.160251

• Communications • Previous Articles

Preparation and Catalytic Performance Evaluation of Multi-metal Catalysts for Conversion of Tetrachloromethaneto Trichloromethane by Liquid Phase Hydrogenation

ZHU Yiming,ZHANG Hao,ZHANG Jun(),MI Gang,SONG Bangcai,DU Xigang

Chemical Engineering & Pharmaceutics School,He'nan University of Science & Technology,Luoyang,He'nan 471023,China

Received:2016-06-15 Accepted:2016-08-09 Published:2017-01-18 Online:2017-01-18
Contact: ZHANG Jun
Supported by:
Supported by the National Natural Science Foundation of China(No.21576073, No.21076063)

Abstract

Abstract:

By using Pd/Pt as main active ingredients and Fe/Ni as auxiliary, coconut shell activated carbon(ACcs) loaded mono metal(M/ACcs), binary metal(M-Ni/ACcs, M-Fe/ACcs) and ternary metal(M-Ni-Fe/ACcs) catalysts have been prepared via metal impregnation and H₂ reduction. The catalytic activity and selectivity of the catalysts for conversion of CCl₄ to CHCl₃ by liquid-phase hydrogenation was evaluated. Compared with Pt-based catalysts, the Pd-based counterparts have higher activity, but lower CHCl₃ selectivity. During initial reaction time of 5 h, the catalytic activity order follows:Pd-Ni-Fe/ACcs>Pd-Fe/ACcs>Pd/ACcs>Pd-Ni/ACcs and Pt/ACcs≈Pt-Fe/ACcs>Pt-Ni/ACcs>Pt-Ni-Fe/ACcs. Addition of Fe component improves the activity while single addition of Ni lowers the catalytic performance. The Pd-Ni-Fe/ACcs catalyst can realize more than 97% conversion of CCl₄ and nearly 100% selectivity for CHCl₃ at 393 K for 5 h.

Key words: tetrachloromethane, trichloromethane, liquid-phase hydrogenation, Pd/Pt catalysts, catalytic performance, conversion rate

ZHU Yiming, ZHANG Hao, ZHANG Jun, MI Gang, SONG Bangcai, DU Xigang. Preparation and Catalytic Performance Evaluation of Multi-metal Catalysts for Conversion of Tetrachloromethaneto Trichloromethane by Liquid Phase Hydrogenation[J]. Chinese Journal of Applied Chemistry, 2017, 34(2): 242-244.

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Preparation and Catalytic Performance Evaluation of Multi-metal Catalysts for Conversion of Tetrachloromethaneto Trichloromethane by Liquid Phase Hydrogenation

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