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Steady-state isotopic transient kinetic analysis of steam reforming of methanol over Cu-based catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
48000 46487 2009 7 PDF Available
Title
Steady-state isotopic transient kinetic analysis of steam reforming of methanol over Cu-based catalysts
Abstract

Mechanistic aspects of steam reforming of methanol were studied via steady-state isotopic transient kinetic analysis over three copper-based catalysts, namely combustion-synthesized Cu-Ce-O and Cu-Mn-O, and commercial Cu-ZnO-Al2O3. The “C-path” and “O-path” for the production of CO2 via steam reforming of methanol was analysed with the following step changes in the feed: 12CH3OH/H2O/Ar/He → 13CH3OH/H2O/He and CH3OH/H216O/Ar/He → CH3OH/H216O/H218O/He. The presence of CH318OH in the products after the switch to 18O-labeled water indicates that a major path of the reaction is the one involving a methyl formate intermediate. This appears to be the main path over the Cu-Mn-O catalyst, while parallel paths via dioxomethylene and methyl formate intermediates appear to be operative over Cu-Ce-O and Cu-ZnO-Al2O3 catalysts.

Keywords
SSITKA; Steam reforming; Methanol; Copper; Ceria; Manganese
First Page Preview
Steady-state isotopic transient kinetic analysis of steam reforming of methanol over Cu-based catalysts
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 88, Issues 3–4, 20 May 2009, Pages 490–496
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis