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In situ reduction study of cobalt model Fischer-Tropsch synthesis catalysts

du Plessis, Hester Esna; Forbes, Roy Peter; Barnard, Werner; Erasmus, Willem Johannes and Steuwer, Axel LU (2013) In Physical Chemistry Chemical Physics 15(28). p.11640-11645
Abstract
Fischer-Tropsch (FT) synthesis is an important process to manufacture hydrocarbons and oxygenated hydrocarbons from mixtures of carbon monoxide and hydrogen (syngas). The catalysis process occurs on, for example, cobalt metal surfaces at elevated temperatures and pressures. A fundamental understanding of the reduction pathway of supported cobalt oxides, and the intermediate species present during the activation, can assist in developing improved industrial supported cobalt catalysts. Hard synchrotron X-rays have the unique ability to probe atomic processes both in terms of phases present as well as the crystallographic and local structure (using the pair distribution function approach) under realistic conditions. In this manuscript we... (More)
Fischer-Tropsch (FT) synthesis is an important process to manufacture hydrocarbons and oxygenated hydrocarbons from mixtures of carbon monoxide and hydrogen (syngas). The catalysis process occurs on, for example, cobalt metal surfaces at elevated temperatures and pressures. A fundamental understanding of the reduction pathway of supported cobalt oxides, and the intermediate species present during the activation, can assist in developing improved industrial supported cobalt catalysts. Hard synchrotron X-rays have the unique ability to probe atomic processes both in terms of phases present as well as the crystallographic and local structure (using the pair distribution function approach) under realistic conditions. In this manuscript we present results from measurements during in situ hydrogen activation of a model Co/alumina catalyst using in situ synchrotron X-ray powder diffraction and pair-distribution function (PDF) analysis on beam line ID31 at the ESRF in Grenoble, France. The PDF analysis showed a substantially improved understanding of the reduction of cobalt oxides, as for the first time all cobalt could be accounted for by using total scattering analysis. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Chemistry Chemical Physics
volume
15
issue
28
pages
11640 - 11645
publisher
Royal Society of Chemistry
external identifiers
  • wos:000321201500007
  • scopus:84879872007
ISSN
1463-9084
DOI
10.1039/c3cp50274k
language
English
LU publication?
yes
id
764fe5b9-f8b2-41c1-a534-6c497e86e4f9 (old id 3979375)
date added to LUP
2013-09-06 08:48:57
date last changed
2019-02-20 04:54:11
@article{764fe5b9-f8b2-41c1-a534-6c497e86e4f9,
  abstract     = {Fischer-Tropsch (FT) synthesis is an important process to manufacture hydrocarbons and oxygenated hydrocarbons from mixtures of carbon monoxide and hydrogen (syngas). The catalysis process occurs on, for example, cobalt metal surfaces at elevated temperatures and pressures. A fundamental understanding of the reduction pathway of supported cobalt oxides, and the intermediate species present during the activation, can assist in developing improved industrial supported cobalt catalysts. Hard synchrotron X-rays have the unique ability to probe atomic processes both in terms of phases present as well as the crystallographic and local structure (using the pair distribution function approach) under realistic conditions. In this manuscript we present results from measurements during in situ hydrogen activation of a model Co/alumina catalyst using in situ synchrotron X-ray powder diffraction and pair-distribution function (PDF) analysis on beam line ID31 at the ESRF in Grenoble, France. The PDF analysis showed a substantially improved understanding of the reduction of cobalt oxides, as for the first time all cobalt could be accounted for by using total scattering analysis.},
  author       = {du Plessis, Hester Esna and Forbes, Roy Peter and Barnard, Werner and Erasmus, Willem Johannes and Steuwer, Axel},
  issn         = {1463-9084},
  language     = {eng},
  number       = {28},
  pages        = {11640--11645},
  publisher    = {Royal Society of Chemistry},
  series       = {Physical Chemistry Chemical Physics},
  title        = {In situ reduction study of cobalt model Fischer-Tropsch synthesis catalysts},
  url          = {http://dx.doi.org/10.1039/c3cp50274k},
  volume       = {15},
  year         = {2013},
}