Pillared Layered Compounds: Their Synthesis, Structure and Properties

0080040 Clearfield，Abraham该项目的重点是基于两种类型的反应合成微孔和介孔材料;新合成的磷酸氧钒的柱撑和金属膦酸盐化学的设计开发。 新型磷酸氧钒是一种深绿色层状化合物，它能插层胺，在乙醇溶液中剥离。 在这种条件下，它与无机聚合物反应，产生具有高表面积和均匀孔径的多孔柱撑产品。 涉及磷酸氧钒与第一行过渡金属乙酸盐的凝胶形成的第二种类型的反应也导致未知结构的多孔材料，其中在两种情况下的孔可以被调节到10至25纳米的重要中间尺寸范围内的窄范围。 第二类材料更多地涉及通过选择膦酸和金属来设计孔隙率。 将探索导致新材料的反应的性质，并通过使用X射线和电子衍射，NMR和振动光谱，电子显微镜，表面积和孔径测量以及必要的计算机建模程序来表征材料。 从钒和膦酸盐研究中选择的化合物的离子交换、吸附和络合行为、催化性能以及电子和磁性行为将被检查。介孔和微孔材料领域被预测可用作催化剂、吸附剂、分子银、离子交换剂，并且在特殊情况下表现出有趣的电子和磁性行为。 该项目将导致发现与多孔结构形成相关的新现象，并将作为培训学生（包括本科生）设计具有功能特性的新材料的极好工具。

0080040Clearfield, AbrahamThis project focuses on the synthesis of micro and mesoporous materials based upon two types of reactions; the pillaring of a newly synthesized vanadyl phosphate and the designed exploitation of metal phosphonate chemistry. The novel vanadyl phosphate is a dark green layered compound that intercalates amines and on refluxing in alcohol solution exfoliates. In this condition it reacts with inorganic polymers to produce porous pillared products with high surface areas and uniform pores sizes. A second type of reaction involving gel formation of the vanadyl phosphate with first row transition metal acetates also leads to porous materials of unknown structure, where pores in both cases can tuned to narrow ranges in the important intermediate size range of 10 to 25 nanometers. The second class of materials is more involved with the design of porosity by choice of the phosphonic acid and metal. The nature of reactions leading to new materials will be probed and the materials characterized by use of X-ray and electron diffraction, NMR and vibration spectroscopies, electron microscopy, surface area and pore size measurements and where needed computer modeling procedures. The ion exchange, sorption and complexing behavior, and catalytic properties as well as electronic and magnetic behavior of selected compounds from both the vanadium and phosphonate studies will be examined.%%%Meso and microporous materials area predicted to be useful as catalysts, adsorbents, molecular silvers, ion exchanges and in special cases exhibit interesting electronic and magnetic behavior. This project should result in discovery of new phenomena related to formation of porous structures and will serve as an excellent vehicle for training students, including undergraduates, in the design of new materials with functional properties.