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Evaluation of Kinetic Models for the Partial Oxidation of Methane to Synthesis Gas over a Pt/PrCeZrOx Catalyst Coated on a Triangular Monolith Science article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Conference XVIII International Conference on Chemical Reactors
29 Sep - 3 Oct 2008 , Valletta
Journal Chemical Engineering Journal
ISSN: 1385-8947 , E-ISSN: 1873-3212
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 Gubanova Elena L. 1,2 , Schuurman Yves 1 , Sadykov Vladislav A. 2 , Mirodatos Claude 1 , van Veen Andre C. 1,3
Affiliations
1 Institute of Researches on Catalysis and Environment in Lyon
2 Boreskov Institute of Catalysis SB RAS
3 Ruhr University Bochum

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 AN: 2009:1511504 CAN: 152:172797
Dates:
Submitted: Dec 15, 2008
Accepted: May 21, 2009
Published online: May 29, 2009
Published print: Nov 15, 2009
Identifiers:
Chemical Abstracts 2009:1511504
Chemical Abstracts (print) 152:172797
Web of science WOS:000274348700025
Scopus 2-s2.0-75149170137
Rinz 22099753
Links:
  • Web of science - publication.cite_link
  • Scopus - publication.cite_link
  • Rinz - publication.cite_link
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