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Novel mesoporous polyoxometalate hybrid catalysts for heterogeneous oxidation of thioethers

Paper ID Volume ID Publish Year Pages File Format Full-Text
50382 46793 2011 5 PDF Available
Title
Novel mesoporous polyoxometalate hybrid catalysts for heterogeneous oxidation of thioethers
Abstract

K6P2W18O62 and K14[NaP5W30O110] polyoxometalate salts are synthesized and immobilized within MCM-48, SBA-3, SBA-15 and NH3+ functionalized mesoporous silicas. The newly designed hybrid materials are studied as catalysts for oxidation of thioethers. Preyssler complex is found to be a more active catalyst compared to its Dawson analog. Texture and chemical composition of the silica framework is shown to have indispensable effect on oxidation efficiency, stability, and reusability of catalysts. Catalysts with larger pores are proved to be more proper for the oxidation of relatively large thioethers and functionalization improves catalyst's properties.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► Synthesis of K6P2W18O62 and K14[NaP5W30O110] polyoxometalate (POM) salts. ► Synthesis of SBA-3, MCM-48, SBA-15 and NH3+ functionalized SBA-15 supports. ► Designation of hybrid catalysts by grafting POMs within the mesoporous supports. ► Newly designed heterogeneous catalysts are used for green oxidation of thioethers. ► Support's characteristics and W composition of POM affect the catalytic activity.

Keywords
Mesoporous silica; Functionalized; Preyssler; Dawson; Heterogeneous oxidation catalyst; Thioethers
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Novel mesoporous polyoxometalate hybrid catalysts for heterogeneous oxidation of thioethers
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 11, 10 June 2011, Pages 984–988
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