The Adsorption of H2 D2 on FE (100) -Kinetics and Energetics

Abstract

The adsorption behavior of H2 and D2 have been studied on an Fe(110) single crystal surface using a combination of thermal energy atom scattering (TEAS) and angle resolved thermal desorption spectroscopy (ARTDS). TEAS has been used to monitor adlayer coverage during adsorption, desorption and at equilibrium over a range of constant temperatures; and during temperature programmed desorption. ARTDS has been used to measure the desorption flux as a function of surface polar angle during temperature programming following adsorption at low temperature. H2 and D2 adsorb directly, dissociatively, with an activation energy for adsorption of slightly less than 1 Kcal/mol, and an initial sticking coefficient of about 0.1, independent of temperature. Keywords: Surfaces, Chemistry, Kinetics, Molecular beam scattering, Adsorption, Hydrogen, Metals.

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Document Details

Document Type
Technical Report
Publication Date
Feb 28, 1988
Accession Number
ADA196487

Entities

People

  • Edward A. Kurz
  • John B. Hudson

Organizations

  • Rensselaer Polytechnic Institute

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Auger Electron Spectroscopy
  • Auger Electrons
  • Chemistry
  • Classification
  • Contracts
  • Desorption
  • Deuterium
  • Electron Spectroscopy
  • Engineering
  • Governments
  • Heat Of Activation
  • Materials
  • Materials Engineering
  • Measurement
  • Military Research
  • Scattering
  • Security

Fields of Study

  • Physics

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  • Electrochemical Engineering/ Fuel Cell Technologies
  • Molecular Photonics/Laser Physics