Type: Article
New perspective to catalytic epoxidation of olefins by Keplerate containing Keggin polyoxometalates
Journal: Polyhedron (02775387)Year: 1 December 2018Volume: 156Issue: Pages: 98 - 104
Taghiyar H.Yadollahi B.a
DOI:10.1016/j.poly.2018.09.015Language: English
Abstract
Different Keggin encapsulated in Keplerate polyoxometalates (Mo72Fe30, PMo12 ⊂ Mo72Fe30, SiMo12 ⊂ Mo72Fe30 and BW12 ⊂ Mo72Fe30) have been synthesized and their catalytic efficiency in the epoxidation of olefins with hydrogen peroxide investigated. Results were confirmed that Keggin encapsulated in Keplerates could show higher catalytic activity than parent ones. These POM catalysts lead to heterogeneous epoxidation of alkenes by hydrogen peroxide with green features of convenient recovery, steady reuse, high conversion and selectivity, and simple preparation. © 2018 Elsevier Ltd