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Epoxidation of alkenes with molecular oxygen catalyzed by a manganese porphyrin-based metal–organic framework

Paper ID Volume ID Publish Year Pages File Format Full-Text
49515 46751 2015 5 PDF Available
Title
Epoxidation of alkenes with molecular oxygen catalyzed by a manganese porphyrin-based metal–organic framework
Abstract

•Manganese porphyrin metal–organic framework (MOF) as a novel heterogeneous catalyst•First porphyrin MOF to use molecular oxygen during epoxidation of alkenes•Catalyst maintains its structure and high activity after multiple catalytic cycles.•Reaction order kinetics of styrene epoxidation agrees with a homogeneous reaction.

The flexible nature of reticular assemblies and high specific surfaces of metal–organic frameworks (MOFs) offers new opportunities for the design of heterogeneous catalysts capable of industrially relevant reactions. We demonstrate the first instance of alkene epoxidation at mild conditions using molecular oxygen by a manganese porphyrin containing MOF, MOF-525-Mn [Zr6O4(OH)4(MgC48H24O8N4Cl)3]. This zirconium MOF with a manganese porphyrin catalyst shows minimal deactivation over long periods and maintains its structure and high activity after multiple catalytic cycles. Kinetic studies of styrene epoxidation are in agreement with theoretical and experimental studies of homogeneous reactions with the same porphyrin unit, suggesting that the heterogeneous catalyst operates according to a similar mechanism as its homogeneous counterpart.

Keywords
Metal–organic framework; Heterogeneous catalyst; Alkene epoxidation; Manganese
First Page Preview
Epoxidation of alkenes with molecular oxygen catalyzed by a manganese porphyrin-based metal–organic framework
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 59, 10 January 2015, Pages 50–54
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis