Evaluation of Kinetic Models for the Partial Oxidation of Methane to Synthesis Gas over a Pt/PrCeZrOx Catalyst Coated on a Triangular Monolith Full article
Conference |
XVIII International Conference on Chemical Reactors 29 Sep - 3 Oct 2008 , Valletta |
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Journal |
Chemical Engineering Journal
ISSN: 1385-8947 , E-ISSN: 1873-3212 |
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Output data | Year: 2009, Volume: 154, Number: 1-3, Pages: 174-184 Pages count : 11 DOI: 10.1016/j.cej.2009.05.038 | ||||||
Tags | Fluorite structured support, Kinetic model, Oxygen storage material, Platinum, Reaction mechanism | ||||||
Authors |
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Affiliations |
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Funding (1)
1 | Russian Foundation for Basic Research | 05-03-34761 |
Abstract:
The evaluation of kinetic models for the partial oxidation of methane to synthesis gas over a 1.4-wt% Pt/Pr0.3Ce0.35Zr0.35Ox catalyst coated on the surface of a triangular corundum channel is presented. The mathematical form of the tested models accounts for global surface steps. The formulation of reaction steps for two cases proposed in the literature contained lumped formulations to restrict reasonably the number of parameters to estimate. One mechanism considering an oxygen assisted methane activation and another considering methane dissociation without oxygen involvement were tested. In both cases a satisfying description of the experimental data was possible, suggesting that the initial activation of methane is of less importance for the overall progress of the partial oxidation than the oxidation of carbonaceous intermediates to adsorbed carbon monoxide assumed in both cases. Comparing the kinetics over unsupported platinum extensively reported in literature to the data over the 1.4-wt% Pt/Pr0.3Ce0.35Zr0.35Ox catalyst in this work reveals significantly different rates for oxygen adsorption and carbon monoxide oxidation. These differences are explained by considering the active role the ceria plays in the catalyst performance.
Cite:
Gubanova E.L.
, Schuurman Y.
, Sadykov V.A.
, Mirodatos C.
, van Veen A.C.
Evaluation of Kinetic Models for the Partial Oxidation of Methane to Synthesis Gas over a Pt/PrCeZrOx Catalyst Coated on a Triangular Monolith
Chemical Engineering Journal. 2009. V.154. N1-3. P.174-184. DOI: 10.1016/j.cej.2009.05.038 WOS Scopus РИНЦ
Evaluation of Kinetic Models for the Partial Oxidation of Methane to Synthesis Gas over a Pt/PrCeZrOx Catalyst Coated on a Triangular Monolith
Chemical Engineering Journal. 2009. V.154. N1-3. P.174-184. DOI: 10.1016/j.cej.2009.05.038 WOS Scopus РИНЦ
Dates:
Submitted: | Dec 15, 2008 |
Accepted: | May 21, 2009 |
Published online: | May 29, 2009 |
Published print: | Nov 15, 2009 |
Identifiers:
Web of science | WOS:000274348700025 |
Scopus | 2-s2.0-75149170137 |
Elibrary | 22099753 |
Chemical Abstracts | 2009:1511504 |
Chemical Abstracts (print) | 152:172797 |
OpenAlex | W2064174883 |