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Tungsten-containing MCF silica as active and recyclable catalysts for liquid-phase oxidation of 1,3-butanediol to 4-hydroxy-2-butanone

Paper ID Volume ID Publish Year Pages File Format Full-Text
43847 45991 2006 10 PDF Available
Title
Tungsten-containing MCF silica as active and recyclable catalysts for liquid-phase oxidation of 1,3-butanediol to 4-hydroxy-2-butanone
Abstract

W-containing mesocellular silica foams (MCF) having a Si/W (molar) ratio of 10–40 were synthesized and characterized by means of N2 adsorption, SAXS, XRD, TEM, DRIFTS, DR UV–vis and Raman spectroscopy. The results show that tungsten was well incorporated inside the MCF material and the nature of WOx species closely depends on the tungsten content. At low tungsten content (Si/W ≥ 20), the characteristic mesocellular structure of the MCF material was well maintained while at higher tungsten content (Si/W ∼ 10) a significant degradation of the mesocellular arrangement of MCF pores was observed. The selective liquid-phase oxidation of 1,3-butanediol (1,3-BDO) to 4-hydroxy-2-butanone (HB) over the W-MCF material with various Si/W ratios was investigated. Under optimized reaction conditions, the W-MCF catalyst showed a superior catalytic performance in the selective oxidation of 1,3-BDO as compared to other W-containing materials such as WO3/MCF and W-SBA-15. Moreover, a very stable catalytic activity as a function of cycling test was observed for the W-MCF catalyst.

Graphical abstractW-containing mesocellular silica foams (MCF) having a Si/W (molar) ratio of 10–40 were synthesized and investigated with regard to their performance in the selective liquid-phase oxidation of 1,3-butanediol (1,3-BDO) to 4-hydroxy-2-butanone (HB). A very stable catalytic activity as a function of cycling test was observed for the as-synthesized W-MCF catalysts. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Tungsten; Mesocellular silica foams (MCF); 4-Hydroxy-2-butanone (HB); 1,3-Butanediol (1,3-BDO); Hydrogen peroxide; Liquid-phase oxidation
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Tungsten-containing MCF silica as active and recyclable catalysts for liquid-phase oxidation of 1,3-butanediol to 4-hydroxy-2-butanone
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 315, 23 November 2006, Pages 91–100
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