Molten salt-derived biochar with tunable pore architecture as non-metallic catalysts for acetylene hydrochlorination

Li Jun-Long; Zhao Dong-Yang; Dong Jia-Yi; Hu Mian; Zhao Jia; Pan Zhiyan; Zhao Jun; Li Xiaonian; Hu Zhong-Ting

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Molten salt-derived biochar with tunable pore architecture as non-metallic catalysts for acetylene hydrochlorination

Updated：2026-09-17

- Molten salt-derived biochar with tunable pore architecture as non-metallic catalysts for acetylene hydrochlorination
- Chinese Journal of Chemical Engineering Vol. 95, Issue 7, Pages: 41-49(2026)
- Affiliations：
  
  Research Center of Supercritical Fluid Technology, College of Environment, Zhejiang Key Laboratory of Low-carbon Control Technology for Industrial Pollution, State Key Laboratory of Green Chemical Synthesis and Conversion, Zhejiang University of Technology, Hangzhou 310014, China
  Industrial Catalysis Institute, College of Chemical Engineering, State Key Laboratory of Green Chemical Synthesis and Conversion, Zhejiang University of Technology, Hangzhou 310014, China
  Department of Biology, Hong Kong Baptist University, Hong Kong SAR, China
- Author bio：
  
  *Corresponding authors. E-mail addresses:zhaojun@hkbu.edu.hk(J. Zhao)
  *Corresponding authors. E-mail addresses:zthu@zjut.edu.cn(Z.-T. Hu).
- Funds：
- DOI：
  CLC：
- Received：28 October 2025，
  
  Revised：2026-02-15，
  
  Accepted：03 March 2026，
  
  Online First：16 April 2026，
  
  Published：2026-07
- Accepted：
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Li Jun-Long, Zhao Dong-Yang, Dong Jia-Yi, et al. Molten salt-derived biochar with tunable pore architecture as non-metallic catalysts for acetylene hydrochlorination[J]. Chinese Journal of Chemical Engineering, 2026, 95(7): 41-49.
DOI：

Li Jun-Long, Zhao Dong-Yang, Dong Jia-Yi, et al. Molten salt-derived biochar with tunable pore architecture as non-metallic catalysts for acetylene hydrochlorination[J]. Chinese Journal of Chemical Engineering, 2026, 95(7): 41-49. DOI：

摘要

Abstract

Biochar-based catalysts show significant potential to replace toxic mercuric chloride in acetylene hydrochlorination. However

the mechanistic role of their non-metallic active sites remains scarcely investigated

particularly regarding the synergistic interplay between pore architecture and surface functionalities. Herein

a series of biochar based catalysts with rich microstructures were successfully prepared by using molten salt as medium

which were used in acetylene hydrochlorination. The method of preparing biochar by liquid medium of molten salt was optimized by adjusting the ratio of terpolymer salts

mesh number

constant temperature duration

reaction temperature and heating rate

etc

. The materials were analyzed byBET

XRD

TGA

SEMand TEM. The results showed that the biochar materials had abundant pore structure and adjustable pore volume

and it was found that biochar with larger pore volume showed higher acetylene hydrochlorination conversion at the same pore size of 1.8 n

m. Analysis suggests that biochar with large pore volume has more carbon “chambers” at the micropore size

which effectively promotes the “one-to-one” pairing of C

and HCl molecules. This work found that the catalytic performance of acetylene hydrochlorination could be improved effectively by microstructural regulation of non-metallic catalysts.

关键词

Keywords

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