Preparation of PdCu alloy nanocatalysts for nitrate hydrogenation and carbon monoxide oxidation

Fan Cai, Lefu Yang, Shiyao Shan, Derrick Mott, Bing H. Chen, Jin Luo, Chuan Jian Zhong

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Alloying Pd with Cu is important for catalytic reactions such as denitrification reaction and CO oxidation reaction, but understanding of the catalyst preparation and its correlation with the catalyst’s activity and selectivity remains elusive. Herein, we report the results of investigations of the preparation of PdCu alloy nanocatalysts using different methods and the catalytic properties of the catalysts in catalytic denitrification reaction and CO oxidation reaction. PdCu alloy nanocatalysts were prepared by conventional dry impregnation method and ligand-capping based wet chemical synthesis method, and subsequent thermochemical activation as well. The alloying characteristics depend on the bimetallic composition. PdCu/Al2O3 with a Pd/Cu ratio of 50:50 was shown to exhibit an optimized hydrogenation activity for the catalytic denitrification reaction. The catalytic activity of the PdCu catalysts was shown to be highly dependent on the support, as evidenced by the observation of an enhanced catalytic activity for CO oxidation reaction using TiO2 and CeO2 supports with high oxygen storage capacity. Implications of the results to the refinement of the preparation of the alloy nanocatalysts are also discussed.

Original languageEnglish
Article number96
JournalCatalysts
Volume6
Issue number7
DOIs
Publication statusPublished - 2016 Jul 1
Externally publishedYes

Keywords

  • Bimetallic composition
  • CO oxidation
  • Nanocatalyst
  • Nitrate hydrogenation
  • Palladium-copper alloy
  • Support effect

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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