Fourier transform infrared study of 1,1-dichlorotetrafluoroethane adsorption on an alumina-supported Pd catalyst

Victor Yu Borovkov, Ferenc Lonyi, Vladimir I. Kovalchuk, Julie L. D'Itri

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

An FTIR investigation of CF3CFCl2 adsorption on 5% Pd/γ-Al2O3 at room temperature shows that three types of surface species form. Two of the species are identified as trifluoroethylidyne (CF3C=) and the third species is assigned to tetrafluoroethylidene (CF3CF=). All three species are on the metal sites, not on the γ-Al2U3. The surface of the reduced fresh catalyst favors the formation of trifluoroethylidyne species. However, CF3CFCl2 adsorption on a catalyst preexposed to the CFC + H2 mixture at 473 K for 1 h, followed by reduction with H2 at 573 K for 1 h, results in the predominant formation of CF3CF= Both surface CF3CF= and CF3C= species readily interact with H2 at room temperature to form CF3CFH2 and CF3CH3.

Original languageEnglish
Pages (from-to)5603-5609
Number of pages7
JournalJournal of Physical Chemistry B
Volume104
Issue number23
DOIs
Publication statusPublished - Jun 15 2000

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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