CS2 poisoning of size-selective cubooctahedral Pd particles in styrene hydrogenation

Z. Király, Bernadett Veisz, A. Mastalir

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The poisoning effect of carbon disulfide on cubooctahedral palladium nanoparticles (1.5, 3.0 or 4.6 nm in mean diameter) deposited on montmorillonite was investigated in the liquid-phase hydrogenation of styrene to ethylbenzene under mild conditions. The dispersion of the metal crystallites was computed as a function of the mean diameter in terms of face atoms, of edge atoms + corner atoms, and of the total number of exposed surface atoms. A linear relationship was found between the rate of hydrogenation and the fraction of low-coordination surface sites poisoned, independently of particle size, and hydrogenation ceased when these sites were quantitatively covered by poison molecules with a nominal stoichiometry of CS2:Pd = 1:2. High-coordination terrace sites are not involved in the hydrogénation reaction.

Original languageEnglish
Pages (from-to)57-59
Number of pages3
JournalCatalysis Letters
Volume95
Issue number1-2
DOIs
Publication statusPublished - May 2004

Fingerprint

Styrene
poisoning
styrenes
Hydrogenation
hydrogenation
Atoms
atoms
Carbon Disulfide
Bentonite
Carbon disulfide
poisons
carbon disulfide
Ethylbenzene
Poisons
Palladium
montmorillonite
Clay minerals
Crystallites
Stoichiometry
crystallites

Keywords

  • Carbon disulfide
  • Hydrogenation
  • Montmorillonite
  • Nanoparticles
  • Palladium
  • Poisoning
  • Styrene

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

CS2 poisoning of size-selective cubooctahedral Pd particles in styrene hydrogenation. / Király, Z.; Veisz, Bernadett; Mastalir, A.

In: Catalysis Letters, Vol. 95, No. 1-2, 05.2004, p. 57-59.

Research output: Contribution to journalArticle

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