Deep oxidation of methane on particles derived from YSZ-supported Pd-Pt-(O) coatings synthesized by Pulsed Filtered Cathodic Arc

被引：7

作者：

Horwat, D. ^{[1
,2
]}

Endrino, J. L. ^{[2
,3
]}

Boreave, A. ^{[4
]}

Karoum, R. ^{[4
]}

Pierson, J. F. ^{[1
]}

Weber, S. ^{[5
]}

Anders, A. ^{[2
]}

Vernoux, Ph. ^{[4
]}

机构：

[1] Ecole Mines, Inst Jean Lamour, Dept CP2S, F-54042 Nancy, France

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Plasma Applicat Grp, Berkeley, CA 94720 USA

[3] CSIC, Inst Ciencias Mat Madrid, E-28049 Madrid, Spain

[4] Univ Lyon 1, CNRS, UMR 5256, IRCELYON, F-69626 Villeurbanne, France

[5] Ecole Mines, CC MEM, Inst Jean Lamour, F-54042 Nancy, France

来源：

CATALYSIS COMMUNICATIONS | 2009年 / 10卷 / 10期

关键词：

Total oxidation of methane; Palladium oxide; YSZ supported catalysts; Particles; Cathodic arc deposition; PALLADIUM CATALYSTS; ELECTROCHEMICAL PROMOTION; COMBUSTION; TEMPERATURE; REACTIVITY; OXYGEN;

D O I：

10.1016/j.catcom.2009.03.008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Methane total oxidation was studied between 250 and 800 degrees C in a specific quartz reactor for Pd, PdOy, Pd0.6Pt0.4Oy and Pd0.4Pt0.6Oy thin films deposited on yttria stabilized zirconia (YSZ) substrates. Pt containing. films exhibited poor activity and a rapid thermal decomposition. Pd and PdOy films showed good activity and transformed to particles dispersed on the YSZ substrates. The higher reaction rate of PdOy films was explained by a better dispersion of the catalyst. A drop of the reaction rate was observed when the temperature exceeded 735 degrees C and 725 degrees C for initially Pd and PdOy, respectively, which can be associated with the decomposition of PdO into Pd and O-2. The good cycling stability and catalytic efficiency of the latter films render it promising for the pollution control in methane combustion. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1410 / 1413

页数：4

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