【摘要】 <正> 与烯烃的加氢相比,苯环的加氢需要较激烈的反应条件。虽然已有很多可用于芳香族化合物加氢的多相催化剂,但大部分的催化活性和选择性较低。最近发现有一些有机金属络合物,如（η³-C₃H₅）Co[P（OMe）₃]₃、[Rh（η⁵-C₅Me₅）Cl₂]₂·Et₃N和[η⁶-C₆Me₆)Ru（μ-H₂）（μ-Cl）Ru（η⁶-C₆Me₆）]Cl在温和条件下对芳香族化合物的均相催化加氢较为有效。但这些均相催化剂不太稳定,而且不容易从反应产物中分离出,也不易回收使用。为了克服这些缺点,这十年来,高分子金属催化剂的研究很活跃。聚酰胺-铂络合物和具有邻氨基苯甲酸基团的聚苯乙烯-铑络合物可作为苯加氢催化剂,但需要高温或高压的反应条件。我们曾制备了二氧化硅为载体的聚酰胺-铑络合物和二甲氨基或吗啉基取代的聚氯乙烯-铑络合物,并证明在常温常压下能够催更多还原

【Abstract】 A silica-supported poly-γ-diphenylphosphinopropylsiloxane-platinum complex has been prepared by the reaction of silicasupported poly-γ-diphenylphosphinopropylsiloxane with chloroplatinic acid, and has been found to catalyze the hydrogenation of various aromatics such as benzene, toluene, chlorobenzene, bromobenzene, phenol, hydroquinone, p-chlorophenol, p-cresol, benzyl alcohol, benzoic acid, anisole, benzaldehyde and acetophenone to give corresponding products in high yields at room temperature under an atmospheric hydrogen pressure. Hydrogenolysis also occurred in addition to hydrogenation for some aromatics. The composition changes of the products in the hydrogenation and hydrogenolysis were also studied.更多还原