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Enhancement of Catalytic Activity in Epoxide Hydration by Increasing the Concentration of Cobalt(III)/Salen in Porous Polymer Catalysts
Author(s) -
Dai Zhifeng,
Sun Qi,
Chen Fang,
Pan Shuxiang,
Wang Liang,
Meng Xiangju,
Li Jixue,
Xiao FengShou
Publication year - 2016
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201501222
Subject(s) - catalysis , epoxide , monomer , polymerization , cobalt , hydrothermal circulation , metal salen complexes , chemistry , heterogeneous catalysis , porosity , polymer chemistry , polymer , chemical engineering , materials science , organic chemistry , engineering
The rational design of catalytic materials from the reaction characteristics is expected to be a useful strategy to create highly efficient catalysts. Herein, according to a well‐established reaction pathway of epoxide hydration catalyzed a dual‐molecular system of Co 3+ /salen in which a high concentration of active sites is favorable to enhance the activity, we provide an alternative way to prepare a highly efficient heterogeneous catalyst with a high concentration of Co 3+ /salen from the polymerization of vinyl‐functionalized salen monomers followed by the loading of Co 3+ species (Co 3+ /POL‐salen). Co 3+ /POL‐salen has a hierarchical porosity and an extraordinary hydrothermal stability. Importantly, catalytic tests in epoxide hydration demonstrate that Co 3+ /POL‐salen affords excellent high activities, which are even better than those of the homogeneous version. This phenomenon is related to the very high concentration of Co 3+ /salen in the catalyst. In addition, this catalyst can be recycled readily because of its excellent hydrothermal stability.