Selective Oxidation of Methane to Methanol over ZSM-5 Catalysts in Aqueous Hydrogen Peroxide: Role of Formaldehyde

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Title: Selective Oxidation of Methane to Methanol over ZSM-5 Catalysts in Aqueous Hydrogen Peroxide: Role of Formaldehyde
Author(s): Al-Shihri, S
Richard, CJ
Chadwick, D
Item Type: Journal Article
Abstract: The selective oxidation of methane in aqueous hydrogen peroxide over ZSM-5 catalysts with different Si/Al ratios has been investigated. Methyl hydroperoxide was confirmed as the initial product of methane oxidation by a study of product distribution versus reaction time in agreement with previous work. Formaldehyde was identified as an intermediate in the oxidation reaction pathway from MeOOH to formic acid and ultimately CO2. Hydrogen evolution during the oxidation of methane is reported for the first time. Oxidation of the HCHO intermediate to formic acid was demonstrated to be the source of the evolved hydrogen. HCHO appeared to be the source of low levels of soluble polyoxomethylene. Higher productivity of liquid oxygenated products is reported compared to previous work.
Publication Date: 7-Mar-2017
Date of Acceptance: 9-Jan-2017
URI: http://hdl.handle.net/10044/1/48193
DOI: https://dx.doi.org/10.1002/cctc.201601563
ISSN: 1867-3880
Publisher: WILEY-V C H VERLAG GMBH
Start Page: 1276
End Page: 1283
Journal / Book Title: CHEMCATCHEM
Volume: 9
Issue: 7
Copyright Statement: © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the accepted version of the following article:S. Al-Shihri, C. J. Richard, D. Chadwick, ChemCatChem 2017, 9, 1276, which has been published in final form at: https://dx.doi.org/10.1002/cctc.201601563
Keywords: Science & Technology
Physical Sciences
Chemistry, Physical
Chemistry
hydrogen peroxide
methane
methanol
oxidation
ZSM-5
METHYL HYDROPEROXIDE
LOW-TEMPERATURE
POLYACETAL COPOLYMERS
PROMOTED FE-ZSM-5
DIRECT CONVERSION
FEZSM-5 ZEOLITE
FORMIC-ACID
ACTIVATION
CHEMISTRY
CHEMICALS
Organic Chemistry
Publication Status: Published
Appears in Collections:Faculty of Engineering
Chemical Engineering



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