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Selective oxidation of formaldehyde to formic acid over supported vanadia catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
39822 45837 2014 11 PDF Available
Title
Selective oxidation of formaldehyde to formic acid over supported vanadia catalysts
Abstract

•The nature of the support plays significant role in CH2O oxidation over vanadium catalysts.•Anatase is the most suitable support for monolayer vanadium species formation.•Monolayer vanadium species are beneficial for formaldehyde oxidation to formic acid.

The effect of support and different vanadia species present at different vanadium loadings on the catalytic performance of supported vanadia in the oxidation of formaldehyde to formic acid was examined. The catalysts with vanadium supported on SiO2, Al2O3, ZrO2, and TiO2 were prepared by impregnation. The catalysts were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, UV–vis diffuse reflectance spectroscopy, and the temperature-programmed reduction technique. All catalysts and supports were tested in the oxidation of formaldehyde at 120 °C. It was found that activity in the oxidation of formaldehyde to formic acid is determined by the structure of vanadia species and the selectivity is determined by the coverage of support surface by these species. TiO2 (anatase) is the most suitable support for the formation of monolayer vanadium species which are the most active in the oxidation of formaldehyde to formic acid.

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Keywords
Formaldehyde oxidation; Formic acid; Methyl formate; Supported vanadia catalysts
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Selective oxidation of formaldehyde to formic acid over supported vanadia catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 475, 5 April 2014, Pages 98–108
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
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