INFRARED STUDY OF CO ADSORPTION ON PT-RH/SIO2 CATALYSTS

被引：20

作者：

ANDERSON, JA ^{[1
]}

SOLYMOSI, F ^{[1
]}

机构：

[1] ATTILA JOZSEF UNIV,REACT KINET RES GRP,H-6701 SZEGED,HUNGARY

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1991年 / 87卷 / 20期

关键词：

D O I：

10.1039/ft9918703435

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：

Infrared spectra are reported of CO adsorbed on Pt/SiO2, Rh/SiO2 and Pt-Rh/SiO2 in the temperature ranges 93-300 and 303-573 K. CO adsorption as a function of time was studied for high-temperature reduced samples (973 K). The influence of platinum was to decrease the rate at which the rhodium gem-dicarbonyl species was formed and to increase the rate at which metal clusters were reformed. Coupling effects between Pt-CO and Rh-CO at low temperatures indicate that crystallites exist containing well mixed surface layers of platinum and rhodium atoms. The effect of platinum on rhodium particle morphology is discussed.

引用

页码：3435 / 3442

页数：8

共 48 条

[1] ANDERSON J, UNPUB
[2] INFRARED STUDY OF THE REACTION OF CARBON-MONOXIDE AND AMMONIA OVER SUPPORTED RHODIUM CATALYSTS
ANDERSON, JA
ROCHESTER, CH
[J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1990, 86 (22): : 3809 - 3814
[3] INFRARED STUDY OF CO ADSORPTION ON PT-RH/AL2O3 CATALYSTS
ANDERSON, JA
ROCHESTER, CH
[J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1991, 87 (09): : 1479 - 1483
[4] INSITU FTIR STUDY OF CO/H2 REACTIONS OVER RH/SIO2 CATALYSTS AT HIGH-PRESSURE AND TEMPERATURE
ANDERSON, JA
MCQUIRE, MW
ROCHESTER, CH
SWEENEY, T
[J]. CATALYSIS TODAY, 1991, 9 (1-2) : 23 - 30
[5] ANDERSON JA, IN PRESS CATAL TODAY
[6] TEMPERATURE EFFECTS ON THE INFRARED-SPECTRUM OF CARBON-MONOXIDE ADSORBED BY SUPPORTED PLATINUM
BARTH, R
RAMACHANDRAN, A
[J]. JOURNAL OF CATALYSIS, 1990, 125 (02) : 467 - 471
[7] SPECTROSCOPIC EVIDENCE FOR THE INVOLVEMENT OF OH GROUPS IN THE FORMATION OF RHI(CO)2 ON METAL-OXIDE SUPPORTS
BASU, P
PANAYOTOV, D
YATES, JT
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (12) : 3133 - 3136
[8] BOSCHDRIEBERGEN AG, 1989, CATAL LETT, V2, P235
[9] CO-INDUCED STRUCTURAL-CHANGES OF RH ON TIO2 SUPPORT
BUCHANAN, DA
HERNANDEZ, ME
SOLYMOSI, F
WHITE, JM
[J]. JOURNAL OF CATALYSIS, 1990, 125 (02) : 456 - 466
[10] SITE DISTRIBUTION STUDIES OF RH SUPPORTED ON AL2O3 - AN INFRARED STUDY OF CHEMISORBED CO
CAVANAGH, RR
YATES, JT
[J]. JOURNAL OF CHEMICAL PHYSICS, 1981, 74 (07) : 4150 - 4155

← 1 2 3 4 5 →