A new family of crystalline, three dimensionally ordered, microporous structures

Abstract

Ttheoretical arguments, supported by preliminary electron microscopic evidence, reveal that solids with a composition A_xB_xC_m-xO_2m˙ⁿH₂O (where A is an exchangeable monovalent cation, B is typically Al or Ga, C is typically Si or Ge, and x, m, and n are integers the magnitudes of which are governed by the size of the unit cell) possess novel structures with tunnel diameters of molecular dimension; such structures may be generated by recurrent twinning at the unit-cell level.