New Techniques and Applications for Solid-State NMR Studies of Heterogenous Catalysis

多相催化固态核磁共振研究新技术及应用

• 批准号: 9624161
• 负责人: Eric Munson
• 金额: $ 35.58万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-03-15 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9624161&HistoricalAwards=false
• 关键词: New; Techniques; Applications; Solid; State

This Faculty Early Career Development (CAREER) project, supported in the Analytical and Surface Chemistry Program, seeks to develop four new techniques with which to study solid surfaces that serve to catalyze reactions. Professor Munson will develop an in situ flow magic-angle spinning (MAS) solid state nuclear magnetic resonance (NMR) spectrometer probe. Two dimensional pulse strategies will also be developed to follow chemical species during catalytic reactions. Spin-polarized xenon will be used to study low to medium surface areas catalysts where sensitivity is a problem and a large volume MAS probe will be constructed to increase the allowed sample size by at least an order of magnitude. During the tenure of this four-year continuing grant, Professor Munson and his students at the University of Minnesota will apply these new techniques to the study of partial oxidation catalysis reactions that incorporate functional groups such as epoxides, aldehydes and carboxylic acids into products. Olefin metathesis reactions that break carbon-carbon double bonds with the formation of two new carbon-carbon double bonds will also be studied during this CAREER research project. Professor Munson's educational plan involves exciting students at the high school, undergraduate and graduate level about topics in chemistry. An NMR spectrometer has already been built at the University of Minnesota that will be available for loan to local undergraduate institutions in order to help create excitement about the field of chemistry. Incorporation of multimedia materials for use in the classroom at each of these levels is also planned. The field of heterogeneous catalysis is extremely important to the future vitality of the scientific enterprise as the need to do chemistry under lower energy consuming conditions and to minimize the environmental impact of chemical synthesis becomes more critical. Through the planned work of Professor Munson's CAREER research project, a concerted effort will be directed to problems of this type. This activity will be enriching for the students involved in doing this science and it will provide exciting examples to students elsewhere about the power of the chemical sciences.

这个教师早期职业发展（CAREER）项目，在分析和表面化学计划的支持下，旨在开发四种新技术，用于研究催化反应的固体表面。 Munson教授将开发一种原位流动魔角旋转（MAS）固态核磁共振（NMR）光谱仪探头。 还将开发二维脉冲策略以跟踪催化反应期间的化学物种。 自旋极化氙将用于研究低至中等表面积的催化剂，其中灵敏度是一个问题，并且将构建大体积MAS探针以将允许的样本量增加至少一个数量级。 在这项为期四年的持续资助期间，明尼苏达大学的Munson教授和他的学生将把这些新技术应用于部分氧化催化反应的研究，这些反应将环氧化物，醛和羧酸等官能团引入产物中。 烯烃复分解反应，打破碳碳双键与形成两个新的碳碳双键也将在这个职业生涯的研究项目进行研究。 曼森教授的教育计划涉及兴奋的学生在高中，本科和研究生水平的化学主题。 明尼苏达大学已经建造了一台核磁共振光谱仪，可供当地本科院校借用，以帮助创造对化学领域的兴奋。 还计划在这些级别的每一级的课堂上使用多媒体材料。 多相催化领域对科学企业的未来活力至关重要，因为需要在较低的能耗条件下进行化学反应，并将化学合成对环境的影响降至最低。 通过曼森教授的职业生涯研究项目的计划工作，协调一致的努力将针对这种类型的问题。 这项活动将丰富参与这项科学的学生，并将为其他地方的学生提供有关化学科学力量的令人兴奋的例子。