Rhodium dispersion during NO/CO conversions
Rhodium dispersion during NO/CO conversions
Under catalytic conditions for NO/CO conversion, simultaneous time resolved EXAFS and IR studies show that the rhodium atoms in 5 wt% Rh/Al2O3 rapidly migrate between CO covered Rh particles and mononuclear Rh-NO sites, depending as the gas composition is changed. At lower temperatures (473 K) there is interconversion between Rh(CO)2 and Rh(NO) centres.
heterogeneous catalysis, ir spectroscopy, rhodium, synchrotron radiation
5356-5358
Dent, Andrew J.
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Evans, John
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Fiddy, Steven G.
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Jyoti, Bhrat
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Newton, Mark A.
73aab2af-4641-47f3-89ad-3b7d3026164f
Tromp, Moniek
48c1ebbb-579c-42b6-83bb-7188c668b322
9 July 2007
Dent, Andrew J.
24c2a218-cb0e-4193-af0b-3ff1dc42b552
Evans, John
05890433-0155-49fe-a65d-38c90ea25c69
Fiddy, Steven G.
f6c255cf-6aa1-4798-85ca-1a2ccdaa1186
Jyoti, Bhrat
9e00e347-0864-48fa-9bb8-f44f98161fd0
Newton, Mark A.
73aab2af-4641-47f3-89ad-3b7d3026164f
Tromp, Moniek
48c1ebbb-579c-42b6-83bb-7188c668b322
Dent, Andrew J., Evans, John, Fiddy, Steven G., Jyoti, Bhrat, Newton, Mark A. and Tromp, Moniek
(2007)
Rhodium dispersion during NO/CO conversions.
Angewandte Chemie International Edition, 46 (28), .
(doi:10.1002/anie.200701419).
Abstract
Under catalytic conditions for NO/CO conversion, simultaneous time resolved EXAFS and IR studies show that the rhodium atoms in 5 wt% Rh/Al2O3 rapidly migrate between CO covered Rh particles and mononuclear Rh-NO sites, depending as the gas composition is changed. At lower temperatures (473 K) there is interconversion between Rh(CO)2 and Rh(NO) centres.
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Published date: 9 July 2007
Additional Information:
Communication. This research demonstrates for the first time how rapidly a supported metal catalyst can change its particle size under reeaction conditions
Keywords:
heterogeneous catalysis, ir spectroscopy, rhodium, synchrotron radiation
Identifiers
Local EPrints ID: 46620
URI: http://eprints.soton.ac.uk/id/eprint/46620
ISSN: 1433-7851
PURE UUID: dd87b345-5113-4ce3-830b-1b223fcf07a1
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Date deposited: 09 Jul 2007
Last modified: 29 Oct 2024 02:32
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Contributors
Author:
Andrew J. Dent
Author:
Steven G. Fiddy
Author:
Bhrat Jyoti
Author:
Mark A. Newton
Author:
Moniek Tromp
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