Catalytic probe of the surface statistics of palladium crystallites deposited on montmorillonite

Bernadett Veisz, Z. Király, L. Tóth, B. Pécz

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

A viable colloid chemical preparation technique provided a series of low-loaded palladium-montmorillonite catalysts with cubooctahedral Pd particles ranging in size from 1.5 to 6.2 nm in mean diameter. These catalysts were used to test the structure sensitivity of the liquid-phase hydrogenation of styrene to ethylbenzene under mild conditions. An experimental correlation was sought between the specific rate of hydrogenation and the dispersion of the metal. The fractions of high-coordination terrace sites (face atoms) and low-coordination defect sites (edge and corner atoms) were calculated as a function of the crystallite size. The good correlation between the turnover frequencies and the defect site densities suggested that hydrogenation occurs on these defect sites and that terrace sites have only minimal catalytic activity or are inactive.

Original languageEnglish
Pages (from-to)2882-2888
Number of pages7
JournalChemistry of Materials
Volume14
Issue number7
DOIs
Publication statusPublished - 2002

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Bentonite
Palladium
Clay minerals
Crystallites
Hydrogenation
Statistics
Defects
Atoms
Catalysts
Styrene
Ethylbenzene
Colloids
Crystallite size
Catalyst activity
Metals
Liquids

ASJC Scopus subject areas

  • Materials Chemistry
  • Materials Science(all)

Cite this

Catalytic probe of the surface statistics of palladium crystallites deposited on montmorillonite. / Veisz, Bernadett; Király, Z.; Tóth, L.; Pécz, B.

In: Chemistry of Materials, Vol. 14, No. 7, 2002, p. 2882-2888.

Research output: Contribution to journalArticle

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