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

这个由分析和表面化学项目支持的教师早期职业发展（Career）项目，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来跟踪催化反应中的化学物质。自旋极化氙将用于研究低到中等表面积的催化剂，其中灵敏度是一个问题，并且将构建一个大体积的MAS探针来增加允许的样品大小至少一个数量级。在为期四年的持续资助期间，Munson教授和他在明尼苏达大学的学生将把这些新技术应用于部分氧化催化反应的研究，这些反应将功能基团（如环氧化物、醛和羧酸）纳入产品中。在这个CAREER研究项目中，还将研究烯烃的复分解反应，即打破碳-碳双键，形成两个新的碳-碳双键。曼森教授的教育计划包括激发高中、本科和研究生层次的学生对化学主题的兴趣。明尼苏达大学（University of Minnesota）已经建造了一台核磁共振光谱仪，将向当地的本科院校提供贷款，以帮助激发人们对化学领域的兴趣。还计划在每一级的课堂上使用多媒体材料。多相催化领域对科学事业的未来活力至关重要，因为在更低的能耗条件下进行化学反应并最大限度地减少化学合成对环境的影响变得越来越重要。通过曼森教授的职业生涯研究项目的计划工作，一个协调一致的努力将直接针对这类问题。这项活动将丰富参与这项科学研究的学生，并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。

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.