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WO3-based catalysts prepared by non-hydrolytic sol-gel for the production of propene by cross-metathesis of ethene and 2-butene

Paper ID Volume ID Publish Year Pages File Format Full-Text
39508 45825 2014 8 PDF Available
Title
WO3-based catalysts prepared by non-hydrolytic sol-gel for the production of propene by cross-metathesis of ethene and 2-butene
Abstract

•W-based catalysts are prepared in one step by non-hydrolytic sol-gel (NHSG).•They are tested in the cross-metathesis of ethylene and trans-2-butene to propene.•Best NHSG catalysts outcompete reference industrial catalysts.•NHSG catalysts feature good texture, surface acidity, reducibility and W dispersion.

One-step non-hydrolytic sol-gel (NHSG) route is presented as a powerful method to prepare highly effective alkene metathesis catalysts. Tungsten-based catalysts are the industrially relevant system and are prepared for the first time using NHSG. The catalysts were characterized by N2-physisorption, XRD, NH3-TPD, NH3-chemisorption, XPS, TPR, ICP-AES and evaluated in the cross-metathesis of ethene and trans-2-butene to propene. These new catalysts are systematically compared with reference catalysts prepared by impregnation methods on 2 commercial supports (silica and silica-alumina). NHSG catalysts markedly outcompete reference impregnated catalysts in terms of conversion, selectivity and stability. Characterization results show that the texture, tungsten dispersion, reducibility and surface acidity of the NHSG catalysts depend strongly on their composition. This in turn can be correlated with the catalytic performance.

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Keywords
Propylene; WO3/SiO2 catalyst; Non hydrolytic sol gel; Non-aqueous sol-gel; Mesoporous mixed oxides
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WO3-based catalysts prepared by non-hydrolytic sol-gel for the production of propene by cross-metathesis of ethene and 2-butene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 488, November 2014, Pages 200–207
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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