Catalytic Oxidation with Ozone Studied with In Situ Laser Raman Spectroscopy

用原位激光拉曼光谱研究臭氧催化氧化

• 批准号: 9712047
• 负责人: S. Ted Oyama
• 金额: $ 27万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-10-01 至 2001-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9712047&HistoricalAwards=false
• 关键词: Catalytic; Oxidation; Ozone; Studied; Situ

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.

小山教授将继续研究在过渡金属氧化物催化剂上用臭氧低温催化氧化有机化合物。 含氧化合物和芳香族化合物，如乙醇和甲苯，将在负载于氧化锆、二氧化钛、氧化铝和二氧化硅上的Mn或Mo氧化物上竞争性地氧化。不同的载体将为氧化物提供不同的还原性，从而提供不同的电子接受能力。反应动力学和机理，以及决定选择性的关键步骤将通过同位素分布来研究。 吸附的中间体将通过原位激光拉曼光谱进行研究。 臭氧氧化的化学反应也将在分离流反应器中以高流速对其他感兴趣的氧化物进行研究。 将测试涂敷在开孔泡沫基材上的Ti、V、Cr、Fe、Co和Ni的氧化物对VOC模型化合物与臭氧的低温催化氧化的活性。