Synthesis and structural refinement and catalytic evaluation of Pd-supported nanoceria catalysts

J. A. Wang, L. F. Chen, A. Montoya de la Fuente, J. M. Domínguez, J. Salmones

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Nanoceria used as a catalyst support for the three-way catalytic converter was prepared by applying surfactant-assisted method in base media. The manocrystallite structure of ceria was analyzed by XRD technique and refined by using the Rietveld method. Surface dehydroxylation and thermal stability of the surfactant linked on the structure of ceria were characterized with FTIR-in situ. It was found that cerium defects were created in the crystalline structures that varied with calcination temperature. When CO was used as molecular probe to study surface properties of the 3wt.%Pd/CeO2 catalyst, three modes of CO adsorption bands were observed, which corresponds to a linear, bridged and intermediate CO-Pd bond, respectively. In the case of CO oxidation, the catalyst prepared with surfactant is more active than the precipitated one.

Original languageEnglish
Title of host publicationMechanics and Material Engineering for Science and Experiments
EditorsY. Zhou, Y. Ghu, Z. Li, Y. Zhou, Y. Gu, Z. Li
Pages22-25
Number of pages4
StatePublished - 2003
EventProceedings of the International Symposium of Young Scholars on Mechanics and Material Engineering for Science and Experiments - Changsha/Zhangjiajie, China
Duration: 11 Aug 200116 Aug 2001

Publication series

NameMechanics and Material Engineering for Science and Experiments

Conference

ConferenceProceedings of the International Symposium of Young Scholars on Mechanics and Material Engineering for Science and Experiments
Country/TerritoryChina
CityChangsha/Zhangjiajie
Period11/08/0116/08/01

Keywords

  • CO oxidation
  • Catalysts
  • Nanomaterials
  • Structural defects
  • Surfactant-assisted synthesis

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