Accession Number:

ADA196487

Title:

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

Descriptive Note:

Interim rept. 1 Mar 1986-28 Feb 1988

Corporate Author:

RENSSELAER POLYTECHNIC INST TROY NY DEPT OF MATERIALS ENGINEERING

Personal Author(s):

Report Date:

1988-02-28

Pagination or Media Count:

8.0

Abstract:

The adsorption behavior of H2 and D2 have been studied on an Fe110 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 Kcalmol, and an initial sticking coefficient of about 0.1, independent of temperature. Keywords Surfaces, Chemistry, Kinetics, Molecular beam scattering, Adsorption, Hydrogen, Metals.

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE