【摘要】 通过把起相转移作用的聚乙二醇链固载在硅胶上(ＳｉＯ２－ＰＥＧ ６００),再将聚乙烯吡咯烷酮(ＰＶＰ)络合双金属Ｐｄ－Ｃｕ(ＰＶＰ－ＰｄＣｌ２-ＣｕCｌ２)后负载其上,制成一种新型双负载双金属水相脱卤催化剂ＰＶＰ－ＰｄＣｌ２－ＣｕＣｌ２/ＳｉＯ２－ＰＥＧ ６００．以甲酸钠为氢转移试剂,在水相中催化有机卤化物脱卤,研究结果表明:反应温度为８０℃,Ｐｄ:Ｃｕ＝２:１(摩尔比),反应介质ｐＨ≈１１．７左右时,该催化剂对芳香氯化物及α－氯代酮、酯具有良好的催化脱氯和重复使用性能．更多还原

【Abstract】 A new catalyst, PVP-PdCl2-CuCl2/SiO2-PEG 600, was prepared by interaction of carrier of polyethylene glycol (PEG), which is used to phase transfer, supported on silica gel and polyvinylpyrrolidone(PVP)-PdCl2-CuCl2 complex. In water,this catalyst,in which the Pd/Cu molar ratio was 2/1, has shown good activities for dehalogenation of aromatic chloride and α-haloketone and α-haloester,which occured at 80℃ in the presence of reducing agent sodium formate and basic media(pH ≈11.7), and can be repeatedly used without obvious decrease in activity.更多还原