A Vibrational Spectroscopy Study of CH3COOH, CH3COOD and (13)CD3COOH(D) Adsorption on Pt(111). 1. Surface Dimer Formation and Hydrogen Bonding

Abstract

Acetic acid (CH3COOH,-CH3COOD and 13CD3COOH(D)) adsorption on Pt (111) at 168 K has been studied as a function of surface coverage with HREELS. At low acetic acid dosages dissociative adsorption occurs forming a surface acetate species. Further dissociative adsorption as CO(a)orCH3(a)from acetic acid adsorption is ruled out based on the absence of their characteristic vibrational modes. Molecular adsorption occurs at moderate acetic acid dosages with a fingerprint peak at 932 cm-1 for CH3COOH and 13CD3COOH adsorbates. This mode corresponds to a well documented OH mode of the acetic acid dimer.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1991
Accession Number
ADA237240

Entities

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  • J. C. Hemminger
  • Qing Gao

Organizations

  • University of California, Irvine

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  • Air Platforms
  • Energy and Power Technologies

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  • Acetic Acid
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