We have learned how to separate the layers of several classes of compounds and are reconstituting them into novel materials. For example, photochemically active species may be encapsulated to produce permanently porous structures of controlled pore size. Such compounds may prove to be selective catalysts. Layered proton conductors and self-assembled supramolecules of novel structures and properties have been prepared. Some of these find utility in the separation of radioactive ions from nuclear waste.
Zeolites are among the most powerful and versatile catalysts known.
We have initiated a program to synthesize new zeolites, and to carry substitutions of many metals for Al or Si to modify or enhance their acidity. These studies not only include the alumino-silicates, but also the newer aluminum phosphates. Product characterization includes solid-state NMR, surface area and sorption studies. Our studies with zeolites have been extended to the synthesis of solid superacids with for use as non-polluting catalysts. Single crystal X-ray diffraction has been the key tool in elucidating the structure of solids.