The effect of Preparation Method on Metal-Support Interaction in Pd/L-Zeolite Catalysts

G. Larsen, G. L. Haller

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

The method of preparation, ion exchange (IE) versus impregnation (IP), effects the final dispersion, acidity and sintering stability of L-zeolite supported catalysts. The origin of the dispersion effect appears to be in the shape and size of the PdO precursor formed upon calcination which is more elongated with respect to the zeolite channel and has a lower nearest neighbor oxide coordination number when IP is used. While acidity introduced into the L-zeolite before preparation does not appear to effect the initial dispersion, acidity introduced after reduction of the IE preparation stabilizes the Pd particles toward sintering in H2.

Original languageEnglish (US)
Pages (from-to)297-309
Number of pages13
JournalStudies in Surface Science and Catalysis
Volume75
Issue numberC
DOIs
StatePublished - Jan 1 1993

ASJC Scopus subject areas

  • Catalysis
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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