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Catalytic epoxidation of cyclic alkenes with air over CoOx/zeolite heterogeneous catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
50216 46784 2015 5 PDF Available
Title
Catalytic epoxidation of cyclic alkenes with air over CoOx/zeolite heterogeneous catalysts
Abstract

•The supported CoOx/zeolite catalysts are prepared by a simple impregnation method.•CoOx/Y exhibits a high activity for the epoxidation of cyclic alkenes with air.•For cyclooctene, 61.2 mol% conversion with 98.8% epoxide selectivity is achieved.•The CoOx/Y catalyst is highly reusable heterogeneous catalyst.

The supported CoOx/zeolites have been prepared and applied for the epoxidation of cyclic alkenes with air. The catalysts are characterized by powder X-ray diffraction (XRD), ultraviolet–visible spectroscopy (UV–vis) and scanning electron microscope (SEM). Among these CoOx/zeolite catalysts, 2.4% CoOx/Y exhibits the best catalytic activity for the epoxidation of cis-cyclooctene with 61.2 mol% conversion and 98.8 mol% selectivity of epoxide. Some factors such as the kind of zeolites, the oxidants, the solvents, the Co contents, the reaction temperature and time play important roles in controlling the epoxidation. The recyclable stability of the 2.4% CoOx/Y catalyst is confirmed.

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Keywords
CoOx/zeolite; Heterogeneous catalysts; Catalytic epoxidation; Cyclic alkenes; Air
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Catalytic epoxidation of cyclic alkenes with air over CoOx/zeolite heterogeneous catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 67, 5 July 2015, Pages 98–102
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
Online Support
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