摘要
本文报导对聚-ω-(乙二胺基)十一烷基硅氧烷钯络合物的结构的初步研究。红外和光电子能谱的研究结果表明,钯催化剂由三部分组成,它们是氯化钯、金属钯和钯络合物。而钯络合物的结构似应为低分子[Pd(en)_2]x_2。催化氢化时,氯化钯不起主要作用。苯乙烯的氢化速度在汞存在下和无汞的情况完全一样,表明汞的存在不影响吸氢速度,证明了起主要作用的不是金属钯而是聚-ω-(乙二胺基)十一烷基硅氧烷钯络合物。
The structure of poly (aminoethylamino) undecylsiloxan palladium complex catalyst was studied by IR and X ray photolectron spectroscopy. The infrared spectrum of polymer palladium complex catalyst in a KBr disk contained three bands not found in the spectrum of poly-co (aminoethylamino)undecylsiloxane.These bands appeared at 355cm^(-1),364cm^(-1) and 466cm^(-1). The palladium 3d(5/2) and N_(1S) electron binding energies were measured for poly co-(aminoethylamino)undecylsiloxane with Na_2PdCl_4 and other compounds The palladium catalyst was revealed in three forms of supported palladium: PdCl_2 metallic Pd(0)and Pd complex. Palladium complex is shown to the active component in presence of Hg. It is insensitive to mercury. The Structure of palladium complex is almost the same as [Pd(en)_2]x_2.
出处
《武汉大学学报（自然科学版）》
CSCD
1991年第2期78-82,共5页
Journal of Wuhan University(Natural Science Edition)
基金
国家自然科学基金课题
关键词
钯
络合物
有机硅
催化剂
poly-(aminoethylamino)undecylsiloxane
palladium complex
catalyst
structure
