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Time-resolved, in situ DRIFTS/EDE/MS studies on alumina supported Rh catalysts: effects of ceriation on the Rh catalysts in the process of CO oxidation

Time-resolved, in situ DRIFTS/EDE/MS studies on alumina supported Rh catalysts: effects of ceriation on the Rh catalysts in the process of CO oxidation
Time-resolved, in situ DRIFTS/EDE/MS studies on alumina supported Rh catalysts: effects of ceriation on the Rh catalysts in the process of CO oxidation
The effect of ceria doping by oxide surface modification and controlled metal surface modification (CSM) on the structure-function properties of Rh/γ-Al2O3 catalysts in the process of CO oxidation were studied by a combined array of Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS)/Energy Dispersive X-ray Absorption Fine Structure/Mass Spectrometry techniques applied simultaneously under time-resolved, in situ conditions in the temperature range of 298–573 K. The addition of each promoter element by CSM exhibits multiple effects on the catalysts structure. The DRIFTS/XAS studies indicate that CeOx facilitate the protection of Rh particles against extensive oxidation in atmospheres of air, O2 and CO, without reducing the coverage of oxidisable adsorbed CO.
DRIFTS; XAS; Rh catalyst;CO oxidation;ceria
2055-074X
13-23
Kroner, Anna
625fc30b-2e38-438a-8098-634cf2d5898f
Newton, Mark
8891f300-a0af-42ae-bdf3-9be95b2d8e96
Tromp, Moniek
48c1ebbb-579c-42b6-83bb-7188c668b322
Russell, Andrea
b6b7c748-efc1-4d5d-8a7a-8e4b69396169
Dent, Andrew J.
d47ddf4d-3007-4a5c-aefb-57eb8f35af64
Evans, John
05890433-0155-49fe-a65d-38c90ea25c69
Kroner, Anna
625fc30b-2e38-438a-8098-634cf2d5898f
Newton, Mark
8891f300-a0af-42ae-bdf3-9be95b2d8e96
Tromp, Moniek
48c1ebbb-579c-42b6-83bb-7188c668b322
Russell, Andrea
b6b7c748-efc1-4d5d-8a7a-8e4b69396169
Dent, Andrew J.
d47ddf4d-3007-4a5c-aefb-57eb8f35af64
Evans, John
05890433-0155-49fe-a65d-38c90ea25c69

Kroner, Anna, Newton, Mark, Tromp, Moniek, Russell, Andrea, Dent, Andrew J. and Evans, John (2017) Time-resolved, in situ DRIFTS/EDE/MS studies on alumina supported Rh catalysts: effects of ceriation on the Rh catalysts in the process of CO oxidation. Catalysis Structure & Reactivity, 3 (1-2), 13-23. (doi:10.1080/2055074X.2016.1266762).

Record type: Article

Abstract

The effect of ceria doping by oxide surface modification and controlled metal surface modification (CSM) on the structure-function properties of Rh/γ-Al2O3 catalysts in the process of CO oxidation were studied by a combined array of Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS)/Energy Dispersive X-ray Absorption Fine Structure/Mass Spectrometry techniques applied simultaneously under time-resolved, in situ conditions in the temperature range of 298–573 K. The addition of each promoter element by CSM exhibits multiple effects on the catalysts structure. The DRIFTS/XAS studies indicate that CeOx facilitate the protection of Rh particles against extensive oxidation in atmospheres of air, O2 and CO, without reducing the coverage of oxidisable adsorbed CO.

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Time resolved in situ DRIFTS EDE MS studies on alumina supported Rh catalysts effects of ceriation on the Rh catalysts in the process of CO oxidation - Version of Record
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RhAl2O3CeO2_OSM_CSM_DeltaXANES_Figure8
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Accepted/In Press date: 25 November 2016
e-pub ahead of print date: 14 February 2017
Keywords: DRIFTS; XAS; Rh catalyst;CO oxidation;ceria

Identifiers

Local EPrints ID: 412500
URI: http://eprints.soton.ac.uk/id/eprint/412500
ISSN: 2055-074X
PURE UUID: c713896b-a04f-45c2-8455-af1b8db50c2e
ORCID for Andrea Russell: ORCID iD orcid.org/0000-0002-8382-6443

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Date deposited: 17 Jul 2017 14:00
Last modified: 22 Oct 2021 01:35

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