Surface Properties and Chemical Behavior of Alumina

氧化铝的表面性质和化学行为

• 批准号: 9509762
• 负责人: Paul Kropp
• 金额: $ 22.82万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-05-15 至 2000-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9509762&HistoricalAwards=false
• 关键词: Surface; Properties; Chemical; Behavior; Alumina

This award, made in the Organic Dynamics Program will support the research of Dr. Paul Kropp dealing with the surface properties and chemical behavior of alumina in the context of mediating organic reactions. Both mechanistic and synthetic aspects will be investigated and compared with earlier results using silica. Reactions that will be studied include dehydrohalogenation of alkyl halides, Cannizzaro oxidation-reduction of aldehydes, rearrangement of epoxides, and addition of HNCS to alkenes. Both structure-reactivity and stereochemistry will be probed. Surface oxide and aluminum sites will be characterized by quenching with acid and pyridine respectively, and observed by IR, Raman and ESR techniques. In addition to providing mechanistic insights into the role of alumina in mediating organic reactions, this research will lead to new synthetically useful methodologies which, by virtue of easily recovered solid catalysts, are environmentally benign.

这个奖项，在有机动力学计划将支持 Paul Kropp博士的研究涉及表面特性， 氧化铝在介导有机物中的化学行为 反应.机制和合成方面将进行调查 并与使用二氧化硅的早期结果进行比较。反应将是 研究包括烷基卤化物的脱卤化氢，Cannizzaro 醛的氧化还原、环氧化物的重排和加成 HNCS转化为烯烃。 结构反应性和立体化学都将 被探测。 表面氧化物和铝位点的特征在于： 分别用酸淬灭和吡啶淬灭，并用红外光谱、拉曼光谱进行观察 ESR技术。 除了提供对氧化铝作用的机械见解外， 介导有机反应，这项研究将导致新的合成 有用的方法，由于容易回收固体， 催化剂是环境友好的。