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高分子金属催化剂的性能,不仅与金属离子的种类有关,而且与高分子配体的结构有关。作者在以SiO_2负载的聚苯乙烯马来酸酐共聚物的苯胺氨解产物——钯单金属高分子催化剂(P—C_6H_5NH·Pd) 中引入少量的第一过渡金属离子,形成双金属高分子金属催化剂(P-C_6H_5NH·Pd·M)。研究结果表明,由于第一过渡金属离子的引入,使单金属高分子催化剂的催化加氢性能(活性、选择性和稳定性)得到了改善。而且发现,第一过渡金属离子的助催化作用与它的晶体场稳定化能(Crystal Field Stablization Energy,CFSE)有关。
Polymer metal catalyst performance, not only with the type of metal ions, but also with the structure of polymer ligands. The author introduced a small amount of the first transition metal ion into the palladium anomeric metal catalyst (P-C_6H_5NH · Pd) as the aniline aminolysis product of the polystyrene-maleic anhydride copolymer of SiO 2 to form a bimetallic polymer metal Catalyst (P-C_6H_5NH · Pd · M). The results show that, due to the introduction of the first transition metal ions, the catalytic performance of single metal polymer catalysts (activity, selectivity and stability) has been improved. Moreover, it was found that the cocatalytic activity of the first transition metal ion is related to its Crystal Field Stablization Energy (CFSE).