Cation/Anion Modified Ceria-Zirconia Solid Solutions Promoted by Pt as Catalyst of Methane Oxidation into Syngas by Water in Reversible Redox Cycles | Sciact - CRIS-system of Boreskov Institute of Catalysis

Cation/Anion Modified Ceria-Zirconia Solid Solutions Promoted by Pt as Catalyst of Methane Oxidation into Syngas by Water in Reversible Redox Cycles Full article

Journal

Reaction Kinetics and Catalysis Letters
ISSN: 0133-1736 , E-ISSN: 1588-2837

Output data

Year: 2002, Volume: 76, Number: 1, Pages: 83-92 Pages count : 10 DOI: 10.1023/A:1015617512304

Tags

Ceria-zirconia solid solution, Effect of bulk and surface promoters, Methane oxidation into syngas, Reactivity of lattice oxygen, Surface and bulk diffusion

Authors

Sadykov V.A. ^1,2 , Kuznetsova T.G. ¹ , Veniamonov S.A. ¹ , Kochubey D.I. ¹ , Novgorodov B.N. ¹ , Burgina E.B. ¹ , Moroz E.M. ¹ , Paukshtis E.A. ^1,2 , Ivanov V.P. ¹ , Trukhan S.N. ¹ , Beloshapkin S.A. ¹ , Potapova Y.V. ¹ , Lunin V.V. ³ , Kemnitz E. ⁴ , Aboukais A. ⁵

Affiliations

1	Boreskov Institute of Catalysis, Novosibirsk 630090, Russia
2	Novosibirsk State University, Novosibirsk 630090, Russia
3	Lomonosov Moscow State University, Chemical Department, Moscow 119899, Russia
4	Institute for Chemistry, Humboldt-University, Berlin, Germany
5	Laboratoire de Catalyse et Environement MREID, Université du Littoral-Cote d'Opale, Dunkerque, France

Funding (1)

International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union

IR-97-402

Ca and/or F-modified fluorite-like Ce-Zr-mixed oxides have been prepared by Pechini's method. The bulk structure of samples was characterized by XRD, EXAFS and FTIRS of the lattice modes. The surface properties were studied by SIMS and FTIRS of adsorbed CO and surface hydroxyls. The specific reactivity of the surface oxygen, its amount, coefficients of bulk and near-surface diffusion, as dependent upon the sample composition and temperature, were estimated using sample reduction by CO in the pulse/flow mode. Insertion of fluorine into the lattice results in decreasing the degree of oxygen polyhedra distortion, thus decreasing the amount of reactive oxygen and diffusion coefficients. Calcium and Pt addition counteracts this effect. At 500 oC for Pt-supported Ce-Zr-O samples including those modified by Ca and F, the lattice oxygen is easily removed by methane generating CO and hydrogen with high selectivity. Reoxidation of reduced samples by water or carbon dioxide at the same temperature restores the oxygen capacity producing more hydrogen or carbon monoxide.

Sadykov V.A. , Kuznetsova T.G. , Veniamonov S.A. , Kochubey D.I. , Novgorodov B.N. , Burgina E.B. , Moroz E.M. , Paukshtis E.A. , Ivanov V.P. , Trukhan S.N. , Beloshapkin S.A. , Potapova Y.V. , Lunin V.V. , Kemnitz E. , Aboukais A.
Cation/Anion Modified Ceria-Zirconia Solid Solutions Promoted by Pt as Catalyst of Methane Oxidation into Syngas by Water in Reversible Redox Cycles
Reaction Kinetics and Catalysis Letters. 2002. V.76. N1. P.83-92. DOI: 10.1023/A:1015617512304 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Feb 7, 2002
Accepted:	Feb 20, 2002
Published print:	May 1, 2002

Web of science:	WOS:000176049900011
Scopus:	2-s2.0-0036015857
Elibrary:	13401576
Chemical Abstracts:	2002:479135
Chemical Abstracts (print):	137:187935
OpenAlex:	W2128865026

DB	Citing
Web of science	28
Scopus	34
Elibrary	36
OpenAlex	27