科研之友
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摘要
CO adsorption on Ag-doped manganese oxide octahedral molecular sieves (Ag/OMS-2) between 393 and 493 K was studied by single pulse experiments in a temporal analysis of products (TAP) reactor system. The results showed that CO was reversibly adsorbed on the surface of the catalyst and CO2 was formed in an oxidation reaction of CO with lattice oxygen. The fitting of simulated curves to the experimentally observed response curves of the reactant and product was used to determine the kinetic parameters for the different elementary steps of the reaction. The activation energies were 83 kJ center dot mol(-1) for CO desorption and 31 kJ center dot mol(-1) for CO2 desorption. The surface reaction activation energy for CO oxidation by lattice oxygen was 116 kJ/mol.
- 出版日期2007-9-28
- 单位清华大学
