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A robust boehmite-supported cobalt tetraphenylporphyrin catalyst for aerobic oxidation of cyclohexane

Paper ID Volume ID Publish Year Pages File Format Full-Text
42399 45923 2009 5 PDF Available
Title
A robust boehmite-supported cobalt tetraphenylporphyrin catalyst for aerobic oxidation of cyclohexane
Abstract

Using a method of physically adsorbing and chemically coordinating cobalt porphyrin on to boehmite, a new boehmite-supported cobalt tetraphenylporphyrin [CoII TPP/BM] catalyst has been prepared and characterized by UV–Vis, FT-IR, XRD, TEM and TG techniques. The supported catalyst was used for aerobic oxidation of cyclohexane under mild conditions and in the absence of any solvent and additive. The experimental results indicate that, after 10 consecutive uses for the oxidation, a quantity of catalyst containing only 1 mg of cobalt porphyrin, can not only provide, on average, 9.2% cyclohexane conversion, 92.1% selectivity for K/A oil and a catalyst turnover number of 1.14 × 105, but also can maintain continuously the original catalytic activity with promotion by beomite (BM). A proposed reason for the good reusability and stability of the supported catalyst for aerobic oxidation of cyclohexane was that the anchored form of the single cobalt porphyrin molecules were highly dispersed and immobilized on the boehmite.

Graphical abstractA new boehmite-supported cobalt tetraphenylporphyrin catalyst was used for the aerobic oxidation of cyclohexane. This nano-structured material showed robust stability after 10 consecutive uses for the oxidation with little change of original catalytic activity. On average, the catalyst exhibited 9.2% cyclohexane conversion, 92.1% selectivity for K/A oil and a catalyst turnover number of 1.14 × 105.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Boehmite; Cobalt tetraphenylporphyrin; Cyclohexane oxidation; Air
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A robust boehmite-supported cobalt tetraphenylporphyrin catalyst for aerobic oxidation of cyclohexane
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 371, Issues 1–2, 15 December 2009, Pages 161–165
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
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us