有机硅聚合物过渡金属络合催化剂的合成与活性——Ⅳ.一种高活性的烯烃氢化催化剂——聚γ-（p-二苯膦苯基）丙基硅氧烷钯络合物^*

有机硅聚合物过渡金属络合催化剂的合成与活性——Ⅳ.一种高活性的烯烃氢化催化剂——聚γ-（p-二苯膦苯基）丙基硅氧烷钯络合物 * THE SYNTHESIS AND ACTIVITY OF SILICONE SUPPORTED TRANSITION METAL COMPLEX CATALYSIS Ⅳ A High Active Polymer Catalyst, Poly-γ-（p-diphenylphosphinophenyl） propylsiloxane—Palladium Complex, for Hydrogenation of Olefins. 陈远荫 first-author 刘基万 林颐庚 倪继金 肖超勃 王玉华 从γ-（p-澳苯基）丙基三氯硅烷出发,通过酯化、膦化、用气相法二氧化硅固载化,再与氯亚钯酸钠四水合物作用,合成了硅胶固载的聚γ-（p-二苯膦苯基）丙基硅氧烷钯络合物。后者在烯烃的常压氢化中显示很高的催化活性。例如,20毫克分子环己烯在40℃和含有0.0018毫克原子钯的催化剂存在下,四小时内氢化完全,起始吸氢速度高达3300毫升/分·毫克原子钯。催化剂可以再次使用,其活性无明显变化。 In present paper we describe the preparation of poly-γ-（p-diphenylphosphinophenyl）propylsiloxane supported on fumed silica and its palladium complex starting from γ-（p-bromophenyl）propyltrichlorosilane, and the evaluation of its activity in hydrogenation of olefins. The title complex displayed a high activity for hydrogenation of olefins in proper solvents under an atmospheric pressnre of hydrogen at 40℃. For example, 20mM cyelohexene was completely hydrogenated with about 40mg complex containing 0.0018mg atom palladium in i-propanol within 4 hours. The initial hydrogen uptake for the hydrogenation of eyelohexeue was as high as 3300ml per min. per milligram atom palladium. Furthermore, it could be reused several times without significant loss of its activity. 1982-02-01 2021-04-01 2