Hydrogen Spill-over on Alumina - A Study by Infrared Spectroscopy.

Abstract

Infrared spectroscopy has been used to monitor the exchange of D2(g) with OH groups chemisorbed on Al2O3. It has been shown that near 300K, the rate of the exchange process is rapid in the presence of supported Rh particles on the Al2O3. A qualitative model for hydrogen 'spillover' is presented in which dissociative adsorption of dihydrogen by the metal is a key step. It is shown that CO chemisorption on the supported Rh leads to a marked reduction in the 'spillover' rate due to site blockage on the Rh. This is consistent with recent studies of behavior of the CO and H coadsorbed on Rh(111). (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1980
Accession Number
ADA084853

Entities

People

  • J. T. Yates Jr.
  • R. R. Cavanagh

Organizations

  • National Institute of Standards and Technology

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Absorption Spectra
  • Adsorption
  • Aluminum Oxides
  • Base Pressure
  • Carbon Monoxide
  • Chemisorption
  • Deuterium
  • Heat Of Activation
  • Hydrogen
  • Infrared Spectra
  • Infrared Spectrometers
  • Infrared Spectroscopy
  • Measurement
  • Metals
  • Spectra
  • Spectroscopy
  • Transition Metals

Fields of Study

  • Chemistry

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies