Surface and structural characterization of CexZr1-xO2 CEZIRENCAT mixed oxides as potential three-way catalyst promoters

被引：192
作者：
Colón, G
Pijolat, M
Valdivieso, F
Vidal, H
Kaspar, J
Finocchio, E
Daturi, M
Binet, C
Lavalley, JC
Baker, RT
Bernal, S
机构：
[1] Ecole Natl Super Mines, Ctr SPIN, F-42023 St Etienne 2, France
[2] Univ Trieste, Dipartimento Sci Chim, I-34127 Trieste, Italy
[3] ISMRA Univ Caen, UMR 6506, Catalyse & Spectrochim Lab, F-14050 Caen, France
[4] Univ Cadiz, Fac Ciencias, Dept Ciencia Mat Ingn Met & Quim Inorgan, Cadiz 11510, Spain
来源：
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1998年 / 94卷 / 24期
关键词：
D O I：
10.1039/a807680d
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The textural and structural properties of high specific surface area. (HS) CexZr1-xO2 mixed oxides (CeZrMO) and their modification upon thermal aging have been investigated. Results from BET area determination and complete porosity analysis, as well as high-resolution electron microscopy, XRD, Raman and FTIR spectroscopies are presented. Some relationships between the molar composition of the binary systems and their textural and structural properties are presented. In addition, it has been possible to propose an explanation for structural features of the mixed oxides (solid-solution structures and possible phase segregation) as a function of Ce content, a point of great interest for the knowledge of phase composition and stability of CeZrMO.
引用
收藏
页码：3717 / 3726
页数：10
相关论文
共 26 条
[1]   Use of methanol as an IR molecular probe to study the surface of polycrystalline ceria [J].
Badri, A ;
Binet, C ;
Lavalley, JC .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1997, 93 (06) :1159-1168
[2]   THE DETERMINATION OF PORE VOLUME AND AREA DISTRIBUTIONS IN POROUS SUBSTANCES .1. COMPUTATIONS FROM NITROGEN ISOTHERMS [J].
BARRETT, EP ;
JOYNER, LG ;
HALENDA, PP .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1951, 73 (01) :373-380
[3]   INFRARED STUDY OF ALCOHOLS ADSORPTION ON ZIRCONIUM-OXIDE - REACTIVITY OF ALKOXY SPECIES TOWARDS CO2 [J].
BENSITEL, M ;
MORAVEK, V ;
LAMOTTE, J ;
SAUR, O ;
LAVALLEY, JC .
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 1987, 43 (12) :1487-1491
[4]   INTERMEDIATE SPECIES ON ZIRCONIA SUPPORTED METHANOL AEROGEL CATALYSTS .5. ADSORPTION OF METHANOL [J].
BIANCHI, D ;
CHAFIK, T ;
KHALFALLAH, M ;
TEICHNER, SJ .
APPLIED CATALYSIS A-GENERAL, 1995, 123 (01) :89-110
[5]   A SPECTROSCOPIC CHARACTERIZATION OF THE REDUCTION OF CERIA FROM ELECTRONIC-TRANSITIONS OF INTRINSIC POINT-DEFECTS [J].
BINET, C ;
BADRI, A ;
LAVALLEY, JC .
JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (25) :6392-6398
[6]   CHEMICAL MODIFICATION OF CATALYST SUPPORT FOR ENHANCEMENT OF TRANSIENT CATALYTIC ACTIVITY - NITRIC-OXIDE REDUCTION BY CARBON-MONOXIDE OVER RHODIUM [J].
CHO, BK .
JOURNAL OF CATALYSIS, 1991, 131 (01) :74-87
[7]  
CUIF J, 1996, SAE TECH PAP SER
[8]   A NEW TENTATIVE PHASE-EQUILIBRIUM DIAGRAM FOR THE ZRO2-CEO2 SYSTEM IN AIR [J].
DURAN, P ;
GONZALEZ, M ;
MOURE, C ;
JURADO, JR ;
PASCUAL, C .
JOURNAL OF MATERIALS SCIENCE, 1990, 25 (12) :5001-5006
[9]   Metal-loaded CeO2-ZrO2 solid solutions as innovative catalysts for automotive catalytic converters [J].
Fornasiero, P ;
Balducci, G ;
Kaspar, J ;
Meriani, S ;
diMonte, R ;
Graziani, M .
CATALYSIS TODAY, 1996, 29 (1-4) :47-52
[10]   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 [J].
FORNASIERO, P ;
DIMONTE, R ;
RAO, GR ;
KASPAR, J ;
MERIANI, S ;
TROVARELLI, A ;
GRAZIANI, M .
JOURNAL OF CATALYSIS, 1995, 151 (01) :168-177
123