層状ポリケイ酸塩 : ガス吸着特性と粒子の分散

概要

論文の詳細を見る
Layered polysilicates consist of silica as a major constituent with alkali ions and water molecules. Magadiite and kenyaite, which are well-known compounds of layered polysilicates, and their silicic acids have been noted as host materials for intercalation and ion-exchange. However, detailed crystal structure and ion-exchange properties of these compounds have not been clarified. They carry silanol group on internal surface and exhibit ion selectivity of H^+>Na^+>Li^+>K^+. Furthermore, they have micropore "8-membered ring" built up with SIO_4-tetrahedra layers and no Al m the framework From above points of view, these compounds show different properties from clay minerals and are therefore expected to provide new materials. Particular attention is directed to the potential of these compounds for applications relating to their properties such as thermal stability based on dehydration and rehydration, dispersion of the particles and gas adsorption. An idea to prepare porous materials from layered polysilicates by intercalation is also considered.
日本粘土学会の論文
1994-03-25