Lean NO adsorption on copper catalysts supported on ceria and promoted with sodium

Sichem Guerrero, Gonzalo Águila, Paulo Araya

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5 Scopus citations

Abstract

The simultaneous presence of sodium and copper on novel Na/Cu/CeO 2 and Na/Cu/CeY catalysts resulted in a dramatic increase in the catalytic adsorption of NO. Copper catalyzes the oxidation of NO to NO 2, which is further adsorbed by the sodium phase. The intimate contact of both phases favors the formation of nitrates on the surface. The cooperative effect between the copper and sodium phases increases the reduction temperature of copper. It was found that the addition of copper induced a stabilizing effect on the surface area of the catalysts.

Original languageEnglish
Pages (from-to)183-190
Number of pages8
JournalCatalysis Communications
Volume28
DOIs
StatePublished - 5 Nov 2012

Bibliographical note

Funding Information:
We gratefully acknowledge the Chilean National Science and Technology Research Fund (FONDECYT) , project no. 3100068 for funding this work.

Keywords

  • CeO
  • CeO -Y
  • NO adsorption
  • NO oxidation
  • Na/Cu/CeO
  • Na/Cu/CeO -Y

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