Infrared photochemical properties of sensitized SO2O2 mixtures

Autor: Ion N. Voicu, N. Chitica, I.N. Mihailescu, R. Alexandrescu, Dan C. Dumitras, I. Morjan
Rok vydání: 1996
Předmět:
Zdroj: Journal of Photochemistry and Photobiology A: Chemistry. 93:89-95
ISSN: 1010-6030
DOI: 10.1016/1010-6030(95)04194-x
Popis: Sulphur dioxide photo-oxidation in sensitized SO 2 O 2 mixtures at overall pressures of several hundred Torr was studied in the CO 2 laser emission range on addition of different absorbing gases (SF 6 , C 2 H 4 F 2 , C 2 HCl 3 ). The extent of conversion was correlated in each case with the absorption of energy by the specific ternary system under investigation. To explain the high reactivity found in SO 2 O 2 C 2 H 4 F 2 mixtures irradiated with the 9R24 laser line, the gas temperature inside the laser beam was estimated and a model of the energy transfer processes at different irradiation frequencies was proposed. It is suggested that, complementary to the thermalized chemistry, a vibrational enhancement of SO 2 oxidation can occur when the laser frequency correlates with the energy level structure of the specific molecular system employed.
Databáze: OpenAIRE