PVP-柱撑蒙脱土双负载双金属催化芳香卤化物的水相脱卤

Hydrogen Transfer Dehalogenation of Organic Halides Catalyzed by PVP-Mont Dually Supported Pd-Fe Catalyst in Aqueous System

采用高聚物聚乙烯吡咯烷酮(PVP)和支载了聚乙二醇(PEG)活性链的蒙脱土(CLM)为载体,支载PdCl2-FeSO4,制备了新型催化剂PVP-PdCl2-FeSO4/Al-CLM-PEG,催化剂在水相中对芳香氯化物脱卤具有较高的催化活性和选择性,而且易分离和再生.考察了甲酸钠用量、反应温度和反应时间对催化剂催化活性的影响.

The novel catalyst was prepared, PVP-PdCl2- FeSO4/A1-CLM-PEG, PVP （polyvinylpyrrolidone）-supported bimetallic Pd-Fe and pillared rnontmorillonite function-allied by PEG（polyethylene glycol）. It was shown that the catalyst had high activity and selectivity in water phase and could be easily separated and reused. The amount of HCOONa and reaction temperature and reaction time had a great influence on catalytic activity of the catalyst for dechlorination of aromatic chlorides.