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

[31] EFFECT OF NO ON THE CO-INDUCED DISRUPTION OF RHODIUM CRYSTALLITES [J].

SOLYMOSI, F ;

BANSAGI, T ;

NOVAK, E .

JOURNAL OF CATALYSIS, 1988, 112 (01) :183-193

[32] INFRARED STUDIES OF THE EFFECTS OF PROMOTERS ON CO-INDUCED STRUCTURAL-CHANGES IN RH [J].

SOLYMOSI, F ;

PASZTOR, M ;

RAKHELY, G .

JOURNAL OF CATALYSIS, 1988, 110 (02) :413-415

[33]

SOLYMOSI F, 1987, 10TH N AM M CAT SOC

[34]

TAYLOR KC, 1984, CATALYSIS SCI TECHNO, V5, P120

[35] SURFACE-COMPOSITION DETERMINATION OF BINARY-ALLOYS BY AES WITHOUT REFERENCE SPECTRA OF THE CONSTITUENT COMPONENTS [J].

VANDELFT, FCMJM ;

NIEUWENHUYS, BE .

SURFACE SCIENCE, 1985, 162 (1-3) :538-543

[36] AN INFRARED STUDY OF THE INTERACTION OF CO AND NO WITH A SILICA SUPPORTED PT-RH ALLOY CATALYST [J].

VANSLOOTEN, RF ;

NIEUWENHUYS, BE .

JOURNAL OF CATALYSIS, 1990, 122 (02) :429-437

[37] AN EXTENDED X-RAY ABSORPTION FINE-STRUCTURE SPECTROSCOPY STUDY OF A HIGHLY DISPERSED RH/AL2O3 CATALYST - THE INFLUENCE OF CO CHEMISORPTION ON THE TOPOLOGY OF RHODIUM [J].

VANTBILK, HFJ ;

VANZON, JBAD ;

HUIZNGA, T ;

VIS, JC ;

KONINGSBERGER, DC ;

PRINS, R .

JOURNAL OF PHYSICAL CHEMISTRY, 1983, 87 (13) :2264-2267

[38] STRUCTURE OF RHODIUM IN AN ULTRADISPERSED RH/AL2O3 CATALYST AS STUDIED BY EXAFS AND OTHER TECHNIQUES [J].

VANTBLIK, HFJ ;

VANZON, JBAD ;

HUIZINGA, T ;

VIS, JC ;

KONINGSBERGER, DC ;

PRINS, R .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1985, 107 (11) :3139-3147

[39] NUCLEAR MAGNETIC-RESONANCE STUDY OF PT-RH BIMETALLIC CLUSTERS [J].

WANG, Z ;

ANSERMET, JP ;

SLICHTER, CP ;

SINFELT, JH .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1988, 84 :3785-3802

[40]

YANG AC, 1957, J PHYS CHEM-US, V61, P1504

← 1 2 3 4 5 →