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

Victor Yu Borovkov, F. Lónyi, 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
Publication statusPublished - Jun 15 2000

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Aluminum Oxide
Catalyst supports
Fourier transforms
Alumina
aluminum oxides
Infrared radiation
Adsorption
catalysts
adsorption
chlorofluorocarbons
Chlorofluorocarbons
Catalysts
room temperature
Metals
Temperature
metals

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Engineering(all)

Cite this

Fourier transform infrared study of 1,1-dichlorotetrafluoroethane adsorption on an alumina-supported Pd catalyst. / Borovkov, Victor Yu; Lónyi, F.; Kovalchuk, Vladimir I.; D'Itri, Julie L.

In: Journal of Physical Chemistry B, Vol. 104, No. 23, 15.06.2000, p. 5603-5609.

Research output: Contribution to journalArticle

Borovkov, Victor Yu ; Lónyi, F. ; Kovalchuk, Vladimir I. ; D'Itri, Julie L. / Fourier transform infrared study of 1,1-dichlorotetrafluoroethane adsorption on an alumina-supported Pd catalyst. In: Journal of Physical Chemistry B. 2000 ; Vol. 104, No. 23. pp. 5603-5609.
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