Citation: 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. doi: 10.11944/j.issn.1000-0518.2017.02.160251 shu

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

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

Corresponding author: ZHANG Jun, j-zhang@126.com
Received Date: 15 June 2016
Revised Date: 20 July 2016
Accepted Date: 9 August 2016

Fund Project: the National Natural Science Foundation of China 21076063the National Natural Science Foundation of China 21576073

Figures(2)

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.
- tetrachloromethane,
- trichloromethane,
- liquid-phase hydrogenation,
- Pd/Pt catalysts,
- catalytic performance,
- conversion rate
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