First report on highly efficient alkene hydrogenation catalysed by Ni(salen) complex encapsulated in zeolite

Abstract Ni(salen) (salen = bis-(salicylidene)ethylenediamine) complex was encapsulated in zeolite Y and hydrogenations of cyclohexene, cyclooctene, 1-hexene and benzene were carried out with Ni(salen) encapsulated zeolite at moderately high temperature (40°C) and pressure (60 atm of H 2 ).