INFRARED SPECTROSCOPIC STUDY OF THE PHOTOINDUCED ACTIVATION OF CO2 ON TIO2 AND RH/TIO2 CATALYSTS

被引：143

作者：

RASKO, J

SOLYMOSI, F

机构：

[1] ATTILA JOZSEF UNIV,INST SOLID STATE & RADIOCHEM,H-6701 SZEGED,HUNGARY

[2] HUNGARIAN ACAD SCI,REACT KINET RES GRP,H-6701 SZEGED,HUNGARY

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1994年 / 98卷 / 29期

关键词：

D O I：

10.1021/j100080a009

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 effect of illumination on the activation of CO2 was investigated at 190 K on oxidized, evacuated, and reduced TiO2 and Rh/TiO2 by means of Fourier transform infrared spectroscopy. The main effect observed for pure titania was an enhancement of the intensity of bands at 1640 and 1219 cm(-1) due to bent CO2. On Rh/TiO2 the photoinduced dissociation of CO2 also occurred, as indicated by the development of CO bands at 2020-2040 cm(-1). It is assumed that the CO2 on Rh/TiO2 is bonded to the surface with both C (linked to a Rh atoms) and one of the O atoms (linked to the oxygen vacancy of titania), and an extended charge transfer induced by illumination leads to the cleavage of a C-O bond.

引用

页码：7147 / 7152

页数：6

共 55 条

[1] NEW NICKEL-CARBON DIOXIDE COMPLEX - SYNTHESIS, PROPERTIES, AND CRYSTALLOGRAPHIC CHARACTERIZATION OF (CARBON DIOXIDE)-BIS(TRICYCLOHEXYLPHOSPHINE)NICKEL [J].