Study of relaxation effects in the 57Fe Mössbauer spectra of carbon-supported iron carbide particles
- 1 September 1985
- journal article
- conference paper
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 58 (5) , 1943-1949
- https://doi.org/10.1063/1.336001
Abstract
A modified model of relaxation for systems containing both a magnetic field and an electric field gradient is presented. This model is used to explain the 57Fe Mössbauer spectra of small iron χ‐carbide particles supported on two types of high surface area carbon. On the basis of this model, it is concluded that χ‐carbide particles interact weakly with graphitic carbon, but very strongly with nearly amorphous carbon. On the nearly amorphous carbon, the particles may, in fact, have an unusually high surface‐to‐volume ratio.This publication has 23 references indexed in Scilit:
- Investigation of supported iron Fischer-Tropsch synthesis catalysts by M ssbauer spectroscopyJournal of Catalysis, 1984
- CO hydrogenation over well-dispersed carbon-supported iron catalystsJournal of Catalysis, 1982
- Iron pentacarbonyl decomposition over grafoil: II. Effect of sample outgassing on decomposition kineticsApplications of Surface Science, 1981
- Behavior of metallic iron catalysts during Fischer-Tropsch synthesis studied with Mössbauer spectroscopy, x-ray diffraction, carbon content determination, and reaction kinetic measurementsThe Journal of Physical Chemistry, 1980
- Metal particle size distributions and Fischer-Tropsch selectivity. An extended Schulz-Flory modelJournal of Catalysis, 1980
- Iron pentacarbonyl decomposition over Grafoil. Production of small metallic iron particlesThe Journal of Physical Chemistry, 1980
- M ssbauer investigation of supported Fe catalysts III. In situ kinetics and spectroscopy during Fischer-Tropsch synthesisJournal of Catalysis, 1979
- Carburization of supported iron synthesis catalystsThe Journal of Physical Chemistry, 1978
- Mössbauer spectral observation on the supported iron catalystJournal of Catalysis, 1970
- Structure of Transition Metal CarbidesTransactions of the Iron and Steel Institute of Japan, 1968