Investigation of the oxygen storage process on ceria- and ceria-zirconia-supported catalysts

被引：136

作者：

Bedrane, S ^{[1
]}

Descorme, C ^{[1
]}

Duprez, D ^{[1
]}

机构：

[1] Univ Poitiers, UMR CNRS 6503, LACCO, F-86022 Poitiers, France

来源：

CATALYSIS TODAY | 2002年 / 75卷 / 1-4期

关键词：

ceria-zirconia; oxygen storage capacity; oxygen diffusion; Rh; Pt; Pd; Ru; Ir;

D O I：

10.1016/S0920-5861(02)00089-5

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A total of 10 noble metal (Rh, Pt, Pd, Ru and It) catalysts, either supported on CeO2 or Ce0.63Zr0.37O2, were prepared. Catalysts were fully characterized using XRD, N-2 adsorption at -196degreesC, TEM and H-2 chemisorption. Oxygen storage processes were carefully investigated. The influence of temperature was checked and a key role of oxygen diffusion was further demonstrated. A review of the reactions involved in the CO transient oxidation reaction is finally proposed. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：401 / 405

页数：5

共 13 条

[1] Bedrane S, 2001, Studies in surface science and catalysis, P125
[2] FTIR STUDY OF CARBON-MONOXIDE ADSORPTION ON CERIA - CO2(2-) CARBONITE DIANION ADSORBED SPECIES
BINET, C
BADRI, A
BOUTONNETKIZLING, M
LAVALLEY, JC
[J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1994, 90 (07): : 1023 - 1028
[3] Infrared study of oxygen adsorption and activation on cerium-zirconium mixed oxides
Descorme, C
Madier, Y
Duprez, D
[J]. JOURNAL OF CATALYSIS, 2000, 196 (01) : 167 - 173
[4] DESCORME C, 2000, STUD SURF SCI CATAL, V130, P347, DOI DOI 10.1016/S0167-2991(00)80981-7
[5] Modification of the redox behaviour of CeO2 induced by structural doping with ZrO2
Fornasiero, P
Balducci, G
DiMonte, R
Kaspar, J
Sergo, V
Gubitosa, G
Ferrero, A
Graziani, M
[J]. JOURNAL OF CATALYSIS, 1996, 164 (01) : 173 - 183
[6] RH-LOADED CEO2-ZRO2 SOLID-SOLUTIONS AS HIGHLY EFFICIENT OXYGEN EXCHANGERS - DEPENDENCE OF THE REDUCTION BEHAVIOR AND THE OXYGEN STORAGE CAPACITY ON THE STRUCTURAL-PROPERTIES
FORNASIERO, P
DIMONTE, R
RAO, GR
KASPAR, J
MERIANI, S
TROVARELLI, A
GRAZIANI, M
[J]. JOURNAL OF CATALYSIS, 1995, 151 (01) : 168 - 177
[7] OXYGEN STORAGE CAPACITY OF PROMOTED RH/CEO2 CATALYSTS - EXCEPTIONAL BEHAVIOR OF RHCU/CEO2
KACIMI, S
BARBIER-JR, J
TAHA, R
DUPREZ, D
[J]. CATALYSIS LETTERS, 1993, 22 (04) : 343 - 350
[8] OXYGEN-EXCHANGE REACTIONS OVER CERIUM OXIDE - AN FT-IR STUDY
LI, C
DOMEN, K
MARUYA, K
ONISHI, T
[J]. JOURNAL OF CATALYSIS, 1990, 123 (02) : 436 - 442
[9] Li C., 1989, J AM CHEM SOC, V111, P7683
[10] Oxygen mobility in CeO2 and CexZr(1-x)O2 compounds:: Study by CO transient oxidation and 18O/16O isotopic exchange
Madier, Y
Descorme, C
Le Govic, AM
Duprez, D
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (50) : 10999 - 11006

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