Synthesis, Analysis, and Evaluation of Synthesized Zeolites with Internal Catalytic Interfaces.

有机反应的区域选择性是化学家研究的一个重要目标。除了提高所需产品的产量外，分离成本也被降到最低。酶是最有效的区域选择性催化剂，然而，它们对大多数工业过程的耐受性不够。分子筛具有分子大小的通道和空腔，具有许多酶的特性。它们能够根据大小选择特定的分子，将这些分子定向成特定的构象，并提供反应位点。本课题的研究计划是设计并合成具有内部催化界面的ZSM-5沸石晶体，将高、低铝浓度区分开。研究工作还将建立物理技术，重点是核磁共振，以证明这些界面的存在并评估其质量。

Regioselectivity in organic reactions is an important goal for chemists. In addition to increasing yields of desired products, separation costs are minimized. Enzymes are the most efficient regioselective catalysts, however, they are not hardy enough for most industrial processes. Zeolites, with their molecular-sized channels and cavities, have many of the properties of enzymes. They are able to select specific molecules according to size, orient these molecules into a particular conformation and supply reactive sites. The research plan for this proposal is to design and synthesize ZSM-5 zeolite crystals with internal catalytic interfaces separating areas of high and low Al concentration. The research work will also establish physical techniques, concentrating on NMR, to demonstrate the presence and evaluate the quality of these interfaces.