The Reaction of Hydrogen with Oxygen on a Polycrystalline Iron Surface
Abstract
The Reaction of Hydrogen with Oxygen on a Polycrystalline Iron Surface, Mehran Arbab and John B. Hudson, Materials Engineering Department, Rensselaer Polytechnic Institute, Troy, NY 12180. We have studied the interaction between hydrogen and oxygen on a polycrystalline iron sample using Auger electron spectroscopy (AES) and mass spectrometry. A hydrogen permeation method was used. We found that chemisorbed oxygen cannot be removed by reaction with adsorbed hydrogen, while oxygen incorporated into the near surface region of the bulk is titrated rapidly, to leave a constant amount of (Chemisorbed) oxygen on the surface, independent of reaction temperature. All results, including both the titration data obtained by AES and the water formation and desorption rates determined by mass spectroscopy, could be interpreted with an overall activation energy of 16.0 + 2.6 Kcal/mole. Of this total energy, 8.5 + 0.4 Kcal/mole was determined to be due to the kinetics of hydrogen permeation through the iron sample. Keywords: Surfaces; Chemistry; Kinetics; Adsorption; Oxygen; Hydrogen; Metals.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 28, 1988
- Accession Number
- ADA196488
Entities
People
- John B. Hudson
- Mehran Arbab
Organizations
- Rensselaer Polytechnic Institute