Catalytic Oxidation with Ozone Studied with In Situ Laser Raman Spectroscopy

大山教授将继续研究臭氧在过渡金属氧化物催化剂上的低温催化氧化有机化合物。氧合物和芳香化合物，如乙醇和甲苯，将在氧化锆、二氧化钛、氧化铝和二氧化硅上竞争性地氧化Mn或Mo氧化物。不同的载体将为氧化物提供不同的还原性，从而提供电子接受能力。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。吸附中间体将用原位激光拉曼光谱进行研究。臭氧氧化的化学性质也将在分离式反应器中以高流速对其他感兴趣的氧化物进行研究。Ti， V, Cr, Fe， Co和Ni的氧化物，水洗涂覆在开孔泡沫衬底上，将测试VOC模型化合物与臭氧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.