摘要
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。
The catalytic properties of polymer metal catalysts strongly depend on the varioussort of metal ions and the structure of polymer ligands. In this thesis, a small amountof the first transition series ion was introduced into the mono-metal polymercatalyst-the complex of Pd and silica-supported synthetic product ofpolystyrene-maleic anhydride copolymer and aniline, to form bimetal polymer cata-lysts. The results showed that.the porperties of the bimetal polymer catalysts were moreimprovable than the mono-methal polymer catalysts for hydrogenation. Hence it wasfound that the promotion effect of the first transition series ions was qualitalively relat-ed to its crystal field stabilization energy (CFSE).
出处
《功能高分子学报》
CAS
CSCD
1992年第3期226-232,共7页
Journal of Functional Polymers
关键词
单金属
双金属
催化加氢
底物
mono-metal
bimetal
catalytic hydrogenation
substrate
