Research on the Preparation and Application of Copper-Based Catalysts for Acetylene-Based Vinyl Chloride Synthesis
1. Hubei Haili Environmental Protection Technology Co., Ltd., Ezhou 4360002, China
2. Hubei Key Laboratory of New Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 4300732, China
| Abstract: | To implement mercury pollution prevention and control requirements and address the toxicity and pollution issues of traditional mercury catalysts in the calcium carbide-acetylene method for vinyl chloride synthesis, it is crucial to develop highly efficient and stable mercury-free catalysts suitable for existing processes, overcoming current limitations such as low activity and poor stability of available alternatives. Using pre-treated coal-based activated carbon as the carrier, non-precious metal copper as the main active component, and phosphoric acid and N-methylpyrrolidone as additives, a mercury-free catalyst was prepared, and its activity was evaluated in a fixed-bed reactor. The results show that under the reaction conditions of 100°C, an empty-bed contact time of 51 h-1, and n(HCl)/n(C2H2)=1.05, the mercury-free catalyst exhibited excellent catalytic performance. During a 196-hour catalyst test operation, the acetylene conversion reached 98.1%, and the vinyl chloride selectivity reached 99.29%. |
| Keywords: | Mercury-free Catalyst; Vinyl Chloride; Synergistic Effect of Additives |
| DOI: | 10.57237/j.cse.2026.01.001 |
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Received: 28 December 2025
Accepted: 6 February 2026
Published Online: 11 February 2026
Funding
| 1. | 湖北省科技创新人才计划 (基金号: 2024DJC044) |
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