乙炔法合成氯乙烯用铜系催化剂的制备及应用研究
1. 湖北海力环保科技股份有限公司, 湖北鄂州 4360002
2. 武汉工程大学, 化工与制药学院湖北省新型反应器与绿色化学工艺重点实验室, 湖北武汉 4300732
| 摘 要： | 为落实汞污染防控要求，攻克电石乙炔法合成氯乙烯传统汞催化剂的毒性与污染难题，针对现有无汞催化剂活性低、稳定性差等问题，研发适配现有工艺的高效稳定无汞催化剂至关重要。以预处理后煤质活性炭为载体，非贵金属铜为主要活性组分，磷酸和N-甲基吡咯烷酮作为助剂，制备无汞催化剂，在固定床反应器上评价该催化剂活性。结果表明，在反应温度100°C、空速51 h-1、n(HCl)/n(C2H2)=1.05的反应条件下，制备的25%Cu-3%Bi-4%Ce-7%H3PO4/NMP-AC无汞催化剂表现出优异的催化性能，催化剂测试运行300 h，乙炔转化率≥80%，氯乙烯选择性达99.29%。 |
| 关 键 词： | 无汞催化剂; 氯乙烯; 助剂协同作用 |
| DOI： | 10.57237/j.cse.2026.01.001 |
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收稿日期: 2025-12-28
接受日期: 2026-02-06
在线出版日期: 2026-02-11
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 |
基金
| 1. | 湖北省科技创新人才计划 (基金号: 2024DJC044) |
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