Growth of Ce on Rh, Surface Alloy Formation and the Preparation and Properties of Rh/Ceria Model Planar Catalysts

James P. Warren; Xiankuan Zhang; Jens Enevold Thaulov Andersen; Richard M. Lambert

doi:A1993LD37000045

Growth of Ce on Rh, Surface Alloy Formation and the Preparation and Properties of Rh/Ceria Model Planar Catalysts

James P. Warren, Xiankuan Zhang, Jens Enevold Thaulov Andersen, Richard M. Lambert

University of Cambridge

Research output: Contribution to journal › Journal article › Research › peer-review

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
Journal	Surface Science
Volume	287/288
Pages (from-to)	222-227
ISSN	0039-6028
DOIs	https://doi.org/A1993LD37000045
Publication status	Published - 1993
Externally published	Yes

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title = "Growth of Ce on Rh, Surface Alloy Formation and the Preparation and Properties of Rh/Ceria Model Planar Catalysts",

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.",

author = "Warren, {James P.} and Xiankuan Zhang and Andersen, {Jens Enevold Thaulov} and Lambert, {Richard M.}",

year = "1993",

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pages = "222--227",

journal = "Surface Science",

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AU - Warren, James P.

AU - Zhang, Xiankuan

AU - Andersen, Jens Enevold Thaulov

AU - Lambert, Richard M.

PY - 1993

Y1 - 1993

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.

U2 - A1993LD37000045

DO - A1993LD37000045

M3 - Journal article

SN - 0039-6028

VL - 287/288

SP - 222

EP - 227

JO - Surface Science

JF - Surface Science

ER -

Growth of Ce on Rh, Surface Alloy Formation and the Preparation and Properties of Rh/Ceria Model Planar Catalysts

Abstract

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