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Carbon monoxide and carbon dioxide interaction with tantalum

Journal Article:

Abstract

The adsorption of carbon monoxide and carbon dioxide on tantalum and the dissolution of these gases in the adsorbent at T >= 300 K have been studied. The flash-filament method (FFM) in a monopole mass-spectrometer and a field emission microscopy was used in the same apparatus. Carbon monoxide and carbon dioxide dissociate on the tantalum surface, carbon monoxide being desorbed in both cases during the flash. The desorption curves of CO reveal three different binding states: two of them (..cap alpha.. and ..beta..'/sub 1/) for the adsorbed particles whereas the high temperature desorption state relates to the adsorbate dissolved in the metal. For the ..beta..'/sub 1/ state of CO the activation energy, the pre-exponential factor and the kinetic order in the kinetic equation of desorption have been estimated. They turned out to be E = 110 kcal/mol, C = 3 X 10/sup 12/ sec/sup -1/, and ..gamma.. = 1. The activation energy of diffusion for CO in tantalum and the energy of outgassing for the metal were found to be 9.4 and 49 kcal/mole, respectively.
Authors:
Belov, V D; USTINOV, YU K; KOMAR, A P [1] 
  1. AN SSSR, LENINGRAD. FIZIKO-TEKHNICHESKIJ INST.
Publication Date:
Mar 01, 1978
Product Type:
Journal Article
Reference Number:
AIX-09-382095; EDB-78-097224
Resource Relation:
Journal Name: Surf. Sci.; (Netherlands); Journal Volume: 72:2
Subject:
36 MATERIALS SCIENCE; CARBON DIOXIDE; ADSORPTION; CARBON MONOXIDE; TANTALUM; SURFACE PROPERTIES; ACTIVATION ENERGY; DESORPTION; FIELD EMISSION; HIGH TEMPERATURE; MASS SPECTROSCOPY; MEDIUM TEMPERATURE; MICROSCOPY; TEMPERATURE DEPENDENCE; VERY HIGH TEMPERATURE; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; ELEMENTS; EMISSION; ENERGY; METALS; OXIDES; OXYGEN COMPOUNDS; REFRACTORY METALS; SORPTION; SPECTROSCOPY; TRANSITION ELEMENTS; 360104* - Metals & Alloys- Physical Properties
OSTI ID:
7063028
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: SUSCA
Submitting Site:
INIS
Size:
Pages: 390-404
Announcement Date:
Jun 01, 1978

Journal Article:

Citation Formats

Belov, V D, USTINOV, YU K, and KOMAR, A P. Carbon monoxide and carbon dioxide interaction with tantalum. Netherlands: N. p., 1978. Web.
Belov, V D, USTINOV, YU K, & KOMAR, A P. Carbon monoxide and carbon dioxide interaction with tantalum. Netherlands.
Belov, V D, USTINOV, YU K, and KOMAR, A P. 1978. "Carbon monoxide and carbon dioxide interaction with tantalum." Netherlands.
@misc{etde_7063028,
title = {Carbon monoxide and carbon dioxide interaction with tantalum}
author = {Belov, V D, USTINOV, YU K, and KOMAR, A P}
abstractNote = {The adsorption of carbon monoxide and carbon dioxide on tantalum and the dissolution of these gases in the adsorbent at T >= 300 K have been studied. The flash-filament method (FFM) in a monopole mass-spectrometer and a field emission microscopy was used in the same apparatus. Carbon monoxide and carbon dioxide dissociate on the tantalum surface, carbon monoxide being desorbed in both cases during the flash. The desorption curves of CO reveal three different binding states: two of them (..cap alpha.. and ..beta..'/sub 1/) for the adsorbed particles whereas the high temperature desorption state relates to the adsorbate dissolved in the metal. For the ..beta..'/sub 1/ state of CO the activation energy, the pre-exponential factor and the kinetic order in the kinetic equation of desorption have been estimated. They turned out to be E = 110 kcal/mol, C = 3 X 10/sup 12/ sec/sup -1/, and ..gamma.. = 1. The activation energy of diffusion for CO in tantalum and the energy of outgassing for the metal were found to be 9.4 and 49 kcal/mole, respectively.}
journal = {Surf. Sci.; (Netherlands)}
volume = {72:2}
journal type = {AC}
place = {Netherlands}
year = {1978}
month = {Mar}
}