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Kinetic analysis of the Ru/SiO2-catalyzed low temperature methane steam reforming

Paper ID Volume ID Publish Year Pages File Format Full-Text
41129 45877 2012 9 PDF Available
Title
Kinetic analysis of the Ru/SiO2-catalyzed low temperature methane steam reforming
Abstract

The performance of a Ru/SiO2 catalyst for methane steam reforming at 450–550 °C is studied in the present. These conditions are suitable for coupling the fixed-bed reactor with a hydrogen-selective membrane for hydrogen recovery, with the subsequent equilibrium shift. A reaction mechanism based on the dissociative adsorption of steam and methane has been proposed (from a total of six possible mechanisms compared), in terms of the statistical analysis of reaction data obtained at different temperatures and contact times in an integral, lab-scale reactor.The proposed model shows that hydrogen inhibition plays an important role in the reaction. Finally, the Ru/SiO2 catalyst prepared in this work is found to be one of the most active catalysts, among other Ru-based catalysts reported in the literature.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (192 K)Download as PowerPoint slideHighlight► A mechanistic model is proposed for methane steam reforming on Ru/SiO2. ► The model considers that rate determining steps are the reaction between dissociatively adsorbed CH4 and H2O molecule. ► Data modeling has considered both mass-transfer effect and equilibrium limitations.

Keywords
Hydrogen production; Steam reforming; Kinetic mechanism; Model discrimination
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Kinetic analysis of the Ru/SiO2-catalyzed low temperature methane steam reforming
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 413–414, 31 January 2012, Pages 366–374
Authors
, , , , , ,
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