Studies of the Acidity of High-Silica Zeolites

可以进行酸催化化学的简单有机分子的吸附将在高硅沸石中使用各种技术进行检查，包括同步温度程序解吸和热重量分析，红外光谱和碳-13核磁共振。这些吸附研究的目的是研究中间体与沸石晶格的相互作用，并最终形成结构/反应性关系，从而深入了解酸位点发生的化学反应。将研究具有不同晶体结构的沸石和晶格中含有不同三价阳离子的沸石，以确定这些性质如何影响酸位的性质。所进行的实验应为更详细地了解高硅沸石的酸性提供基础。

The adsorption of simple organic molecules which can undergo acid-catalyzed chemistry will be examined in high-silica zeolites using a variety of techniques, including simultaneous temperature-programmed desorption and thermal gravimetric analysis, infrared spectroscopy, and carbon-13 nuclear magnetic resonance. The purpose of these adsorption studies will be to study the interaction of intermediates with the zeolite lattice and ultimately to formulate structure/reactivity relationships which can give insight into the chemistry occurring at the acid sites. Zeolites with different crystal structures and with different trivalent cations incorporated into the lattice will be studied in order to determine how these properties affect the properties of the acid sites. The experiments to be conducted should provide a basis for a more detailed understanding of the acidity of high-silica zeolites.