olefin epoxidation;
salen complexes of Mn and Ni;
heterogenised-homogeneous catalysis;
zeolite;
montomorillonite;
D O I:
10.1016/S1381-1169(99)00093-X
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
M(salen) complexes (M = Mn(III), Ni(II); salen = bis-(salicyldene)ethylenediamine) have been encapsulated in zeolite Y and characterised. Mn(salen)(+) complex was also anchored in montmorillonite clay and characterised. Epoxidation of olefins, viz. cyclohexene, cyclooctene and 1-hexene with terminal oxidants (NaOCl, KHSO5) was carried out with the anchored catalyst complexes and found that the epoxidation of Linear olefin (1-hexene) is selectively facile than cyclic olefins. Experimental results are compared with those reported for M(salen) complexes catalysed olefin epoxidation in homogeneous and heterogenised-homogeneous catalytic conditions. (C) 1999 Elsevier Science B.V. All rights reserved.