Growth of Ce on Rh, surface alloy formation and the preparation and properties of Rh/ceria model planar catalysts

J. P. Warren; X. Zhang; J. E.T. Andersen; R. M. Lambert

doi:10.1016/0039-6028(93)90775-F

Growth of Ce on Rh, surface alloy formation and the preparation and properties of Rh/ceria model planar catalysts

J. P. Warren, X. Zhang, J. E.T. Andersen, R. M. Lambert

Chemical & Forensic Sciences

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

Ce deposition on Rh has been studied over a range of conditions: at sufficiently high temperatures a stable surface alloy (Ce₃Rh₂) is formed at all Ce coverages. Oxidation and thermal treatment of Ce overlayers leads to agglomeration and the formation of cerium oxide crystallites on an essentially bare Rh surface. The chemisorption and reactive behaviour of this latter system towards carbon monoxide very closely mimics that of practical CeO₂ Rh catalysts: CO₂ is efficiently produced by oxygen spillover from the rare-earth oxide phase.

Original language	English
Pages (from-to)	222-227
Number of pages	6
Journal	Surface Science
Volume	287-288
Issue number	PART 1
DOIs	https://doi.org/10.1016/0039-6028(93)90775-F
Publication status	Published - May 10 1993

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/0039-6028(93)90775-F

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abstract = "Ce deposition on Rh has been studied over a range of conditions: at sufficiently high temperatures a stable surface alloy (Ce3Rh2) is formed at all Ce coverages. Oxidation and thermal treatment of Ce overlayers leads to agglomeration and the formation of cerium oxide crystallites on an essentially bare Rh surface. The chemisorption and reactive behaviour of this latter system towards carbon monoxide very closely mimics that of practical CeO2 Rh catalysts: CO2 is efficiently produced by oxygen spillover from the rare-earth oxide phase.",

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AU - Warren, J. P.

AU - Zhang, X.

AU - Andersen, J. E.T.

AU - Lambert, R. M.

PY - 1993/5/10

Y1 - 1993/5/10

N2 - Ce deposition on Rh has been studied over a range of conditions: at sufficiently high temperatures a stable surface alloy (Ce3Rh2) is formed at all Ce coverages. Oxidation and thermal treatment of Ce overlayers leads to agglomeration and the formation of cerium oxide crystallites on an essentially bare Rh surface. The chemisorption and reactive behaviour of this latter system towards carbon monoxide very closely mimics that of practical CeO2 Rh catalysts: CO2 is efficiently produced by oxygen spillover from the rare-earth oxide phase.

AB - Ce deposition on Rh has been studied over a range of conditions: at sufficiently high temperatures a stable surface alloy (Ce3Rh2) is formed at all Ce coverages. Oxidation and thermal treatment of Ce overlayers leads to agglomeration and the formation of cerium oxide crystallites on an essentially bare Rh surface. The chemisorption and reactive behaviour of this latter system towards carbon monoxide very closely mimics that of practical CeO2 Rh catalysts: CO2 is efficiently produced by oxygen spillover from the rare-earth oxide phase.

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JO - Surface Science

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Growth of Ce on Rh, surface alloy formation and the preparation and properties of Rh/ceria model planar catalysts

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All Science Journal Classification (ASJC) codes

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