III International Conference

PP-II-118responsible for deep oxidation of ethylene glycol to carbon dioxide. These results are in goodagreement with catalytic data.According to SEM results, adding of ethyl iodide into the reaction mixture leads to somemorphological changes. It prevents the carbon deposition on the silver surface and decreasesamount of «holes», because of displacement of adsorbed oxygen, which is responsible forcarbon deposition on the silver surface. Besides, a long-time treatment of catalyst with C 2 H 5 I-containing reaction mixture leads to etching of the surface, probably, owing to silver iodideformation, which is possible thermodynamically.Thus, an adding of C 2 H 5 I into the reaction mixture leads to glyoxal selectivity increasingowing to destruction of active centers which form oxide-like structures on the silver surface.AcknowledgementThis work was supported by grant-in-aid Ministry of Education of RF and CRDFaccording to program BRHE N° 016-02.382