Published April 15, 2009 | Version v1
Journal article Metadata-only

Remarkable improvement of yttrium on the activity and thermal stability of methane combustion over Pd/Ce-Zr/Al2O3 catalyst

Creators

  • 1. Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444 (China) and Institute of Catalysis, Zhejiang University, Hangzhou 310028 (China)
  • 2. Institute of Catalysis, Zhejiang University, Hangzhou 310028 (China)
  • 3. Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444 (China)

Description

The effects of Y addition to Pd/Ce-Zr/Al2O3 catalyst have been investigated for the combustion of methane. The supported Pd catalysts are characterized by XPS, TPR, TPO and TPSR techniques in order to study the oxidation/reduction properties. Activity tests in methane combustion show that addition of Y to Pd/Ce-Zr/Al2O3 catalyst remarkably promotes its low-temperature and total conversion activity. In addition, the introduction of Y also greatly suppresses deactivation of Pd/Ce-Zr/Al2O3 and endows Pd/Ce-Zr-Y/Al2O3 with higher thermal stability than Pd/Ce-Zr/Al2O3. The characterization results of catalysts indicate that the addition of Y to Pd/Ce-Zr/Al2O3 catalyst can effectively inhibit the decomposition of PdO particles and improve the reduction-reoxidation properties of the active PdO species, which increases the catalytic activity and thermal stability of the Pd/Ce-Zr/Al2O3 catalyst

Availability note (English)

Available from http://dx.doi.org/10.1016/j.matchemphys.2008.10.042

Additional details

Identifiers

DOI
10.1016/j.matchemphys.2008.10.042;
PII
S0254-0584(08)00838-9;

Publishing Information

Journal Title
Materials Chemistry and Physics
Journal Volume
114
Journal Issue
2-3
Journal Page Range
p. 722-727
ISSN
0254-0584
CODEN
MCHPDR

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40068614
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALUMINIUM OXIDES; CATALYSTS; CERIUM; COMBUSTION; DEACTIVATION; DECOMPOSITION; METHANE; PALLADIUM; PALLADIUM OXIDES; REDUCTION; STABILITY; X-RAY PHOTOELECTRON SPECTROSCOPY; YTTRIUM; ZIRCONIUM
Descriptors DEC
ALKANES; ALUMINIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; ELECTRON SPECTROSCOPY; ELEMENTS; HYDROCARBONS; METALS; ORGANIC COMPOUNDS; OXIDATION; OXIDES; OXYGEN COMPOUNDS; PALLADIUM COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; PLATINUM METALS; RARE EARTHS; SPECTROSCOPY; THERMOCHEMICAL PROCESSES; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.