Comparative IR spectroscopic study of Pt- and Pd-containing zeolites in the hydrodechlorination reaction of carbon tetrachloride

Béla Imre, I. Hannus, I. Kiricsi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Hydrodechlorination of CCl4 was investigated on noble metal containing zeolite catalysts by IR spectroscopy. Both the surface species and the gas phase reaction products were simultaneously analysed. Results revealed that the reaction rate and the reaction products were different on Pt- and Pd-containing samples. The enhanced formation of ethane and the suppressed generation of methane over Pd/NaY-FAU zeolite and the formation of chloroform as intermediate product over Pt/NaY-FAU zeolite were explained by the different bond strength of reaction intermediates to the metal surface. The influence of acid sites on the product distribution was traced back to the local decomposition of zeolite framework. A combination of IR spectroscopic methods including simultaneous analysis of gas phase products and surface intermediates proved to be an excellent tool for investigating the reaction mechanism.

Original languageEnglish
Pages (from-to)501-506
Number of pages6
JournalJournal of Molecular Structure
Volume744-747
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - Jun 3 2005

Fingerprint

Zeolites
Carbon tetrachloride
Carbon Tetrachloride
carbon tetrachloride
zeolites
Reaction products
reaction products
products
vapor phases
Reaction intermediates
reaction intermediates
Gases
Metalloids
Precious metals
Chlorine compounds
Ethane
noble metals
chloroform
ethane
Reaction rates

Keywords

  • Acid sites
  • Carbon tetrachloride
  • Hydrodechlorination
  • IR spectroscopy
  • Pt- and Pd-containing zeolites
  • Selectivity

ASJC Scopus subject areas

  • Structural Biology
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Materials Science (miscellaneous)

Cite this

Comparative IR spectroscopic study of Pt- and Pd-containing zeolites in the hydrodechlorination reaction of carbon tetrachloride. / Imre, Béla; Hannus, I.; Kiricsi, I.

In: Journal of Molecular Structure, Vol. 744-747, No. SPEC. ISS., 03.06.2005, p. 501-506.

Research output: Contribution to journalArticle

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