Structural Distortions, Percolation, and Chemical Reactivityin Pillared Clays

本研究涉及柱撑粘土和相关的复杂层状 新型二维微孔氧化物 固体在催化方面有很大的应用前景， 分子分离 这项研究是由 材料研究部和化学部。 重要的问题包括客体物种进入 第二种微孔结构。 几何的影响 客体-主体系统的性质和化学反应性是 正在合成和表征。 这些包括金属氧化物 柱撑粘土，溶胶-粘土复合物，超级粘土，管状 硅酸盐层状复合物，柱撑层状双氢氧化物， 和柱撑层状油酸。 基础物理学 这些材料正在进行理论研究， 实验性的 方法包括门控皮秒脉冲拉曼 光谱学、二维扩散和吸附、弹性和非弹性 中子散射扩散和离散X射线衍射 和FTIR吸收。

This research involves pillared clays and related complex layered oxides which are a novel class or two-dimensional microporous solids which hold great promise for applications in catalysis and molecular separations. The research is co-funded between the Division of Materials Research and the Division of Chemistry. Important issues include mechanisms by which guest species access the 2nd microporous structure. The influence of geometrical properties and chemical reactivity of the guest-host systems are being synthesized and characterized. These include metal oxide pillared clays, sol-clay complexes, super gallery clays, tubular silicate-layered complexes, pillared layered double hydroxides, and pillared layered silicic acids. The fundamental physics of these materials is being investigated theoretically and experimentally. Methods include gated picosecond pulsed Raman Spectroscopy, 2d diffusion and adsorption, elastic and inelastic neutron scattering diffuse and discrete x-ray diffraction, NMR and FTIR absorption.