Catalytic Oxidation with Ozone Studied with In Situ Laser Raman Spectroscopy

Oyama教授将继续研究过渡金属氧化物催化剂上臭氧对有机化合物的低温催化氧化。含氧化合物和芳香族化合物，如乙醇和甲苯，将在以氧化锆、二氧化钛、氧化铝和二氧化硅为载体的锰或钼氧化物上竞争氧化。不同的载体将为氧化物提供不同的还原能力，从而提供接受电子的能力。通过同位素分布研究反应的动力学和机理，以及决定选择性的关键步骤。吸附的中间体将用原位激光拉曼光谱进行研究。臭氧氧化的化学也将在分流反应器中研究，在高流量下对其他感兴趣的氧化物进行。研究了钛、钒、铬、铁、钴、镍等金属氧化物在开孔泡沫衬底上的低温催化氧化活性。

Prof. Oyama will continue studying the low-temperature catalytic oxidation of organic compounds with ozone over transition metal oxide catalysts. Oxygenate and aromatic compounds, such as ethanol and toluene, will be oxidized competitively over Mn or Mo oxides supported on zirconia, titania, alumina and silica. The various supports will provide different reductibility - thus electron-accepting capability-to the oxides. The kinetics and mechanism of reactions, and the key steps determining selectivity will be studied by isotopic distribution. The adsorbed intermediates will be investigated by in situ laser Raman spectroscopy. The chemistry of oxidation with ozone will also be studied in separate flow reactor at high flow-rates on other oxides of interest. Oxides of Ti, V, Cr, Fe, Co and Ni, wash-coated on open-cell foam substrate, will be tested in terms of activity for low-temperature catalytic oxidation of VOC model compounds with ozone.