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Bridging the pressure gap: the development of a far-IR RAIRS high pressure cell

Bridging the pressure gap: the development of a far-IR RAIRS high pressure cell
Bridging the pressure gap: the development of a far-IR RAIRS high pressure cell
Far-infrared light, which can probe the vibrations of chemisorption bonds, is not absorbed by many catalytic feed gases and is therefore ideally suited to study surface chemistry in the presence of such gas. We describe a new instrument for conducting in situ synchrotron reflection-absorption infrared spectroscopy at pressures up to at least I atmosphere on samples which can be prepared and characterised pre- and post-reaction by conventional UHV surface science techniques. The system performance is illustrated by the oxidation of Cu(1 0 0) under 200 mbar of oxygen. Cu2O begins to grow at 390 K and is the only oxide detectable up to 508 K. Only when the substrate temperature exceeds 508 K does oxidation proceed to CuO.
high pressure, oxidation, copper, synchrotron, infrared absorption infrared-spectroscopy, cuprous-oxide, oxygen, reflectance, vibrations, surfaces, cu(100), cuo
0039-6028
4260-4263
Quin, D.
923eac60-a18d-448d-9703-9788d0625043
Russell, A.E.
b6b7c748-efc1-4d5d-8a7a-8e4b69396169
Pere-Laperne, N.
d663d17e-005a-43bb-846a-8522943d4e37
Patel, S.
78768815-0cdc-4ece-afc4-c8cb77fd760d
Lee, T.
237fd996-0301-4620-aa6f-ffed6fcfd3f9
Flaherty, J.
1e221c7a-a79c-45e7-ab89-077f5c2a6720
Burrows, I.
1f493e1e-e087-4c75-a6f7-5fb94353455e
Purton, J.
4dce6299-9a9d-4cf3-b060-41402ffd427c
Surman, M.
b0a046f8-1372-4a62-86db-0c78dd246986
Quin, D.
923eac60-a18d-448d-9703-9788d0625043
Russell, A.E.
b6b7c748-efc1-4d5d-8a7a-8e4b69396169
Pere-Laperne, N.
d663d17e-005a-43bb-846a-8522943d4e37
Patel, S.
78768815-0cdc-4ece-afc4-c8cb77fd760d
Lee, T.
237fd996-0301-4620-aa6f-ffed6fcfd3f9
Flaherty, J.
1e221c7a-a79c-45e7-ab89-077f5c2a6720
Burrows, I.
1f493e1e-e087-4c75-a6f7-5fb94353455e
Purton, J.
4dce6299-9a9d-4cf3-b060-41402ffd427c
Surman, M.
b0a046f8-1372-4a62-86db-0c78dd246986

Quin, D., Russell, A.E., Pere-Laperne, N., Patel, S., Lee, T., Flaherty, J., Burrows, I., Purton, J. and Surman, M. (2006) Bridging the pressure gap: the development of a far-IR RAIRS high pressure cell. Surface Science, 600 (18), 4260-4263. (doi:10.1016/j.susc.2006.01.154).

Record type: Article

Abstract

Far-infrared light, which can probe the vibrations of chemisorption bonds, is not absorbed by many catalytic feed gases and is therefore ideally suited to study surface chemistry in the presence of such gas. We describe a new instrument for conducting in situ synchrotron reflection-absorption infrared spectroscopy at pressures up to at least I atmosphere on samples which can be prepared and characterised pre- and post-reaction by conventional UHV surface science techniques. The system performance is illustrated by the oxidation of Cu(1 0 0) under 200 mbar of oxygen. Cu2O begins to grow at 390 K and is the only oxide detectable up to 508 K. Only when the substrate temperature exceeds 508 K does oxidation proceed to CuO.

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More information

Published date: 2006
Keywords: high pressure, oxidation, copper, synchrotron, infrared absorption infrared-spectroscopy, cuprous-oxide, oxygen, reflectance, vibrations, surfaces, cu(100), cuo

Identifiers

Local EPrints ID: 44531
URI: http://eprints.soton.ac.uk/id/eprint/44531
ISSN: 0039-6028
PURE UUID: 42ddb5b9-fb16-439c-9342-03696d96dfc1
ORCID for A.E. Russell: ORCID iD orcid.org/0000-0002-8382-6443

Catalogue record

Date deposited: 08 Mar 2007
Last modified: 20 Jul 2019 01:13

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Contributors

Author: D. Quin
Author: A.E. Russell ORCID iD
Author: N. Pere-Laperne
Author: S. Patel
Author: T. Lee
Author: J. Flaherty
Author: I. Burrows
Author: J. Purton
Author: M. Surman

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