Ethylene epoxidation oxygen desorption

Key Words Ethylene oxide, Ethylene, Epoxidation, Silver, Cl promotion, Cs promotion. Promotion, Selectivity, Oxametallacycle, Adsorption, Desorption, Chemisorption, Activation energy, Ag-O bond. Reaction mechanism, Oxidation, Cyclisation, Heterogeneous catalysis, Selective oxidation, Eletrophilic oxygen. Nucleophilic oxygen. Subsurface O atoms, Ag/a-A Oj catalyst. 2008 Elsevier B.V. 

Evidence indicating these different roles can be taken from a thermal desorption investigation by Tanaka and Yamashina [314], which indicates that OJ reacts more easily with ethylene than with O2. Mikami et al. [218] show, with pulse techniques, that more loosely bound oxygen is responsible for production of the epoxide and more fixed oxygen for combustion. Very recently, Prauser et al. [258] have used these tech-... 

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