各種アロフェンの酸・アルカリによる溶解

概要

論文の詳細を見る
Allophane is a special kinds of clay mineral widely distributed in Japan, this is itself hydrated amorophous aluminium silicate gel. The SiO_2/Al_2O_3 of allophane depends on the producing place. The charactristic of Terauchi-do was studied by H. Tanaka. But Kisodo, Kitakami-do and osawa-do are not studied. So, these allophanes were studied disolution characteiscic in liquid phase by NaOH solution, physical properties, analysis by nfrared spectroscopy & X-ray, the effect of SiO_2/Al_2O_3 mol. ratio in allophane and chemical composition of these allophanes on synthesis of zeolite. The result, these allophanes showed the special disolution charactristic. The extraction fraction of alumina in allophane increased with treating time becoming longer. But, the treating time becoming longer, the extractive fraction of silica in allophane increased temporarily and then decreased rapidly. This charactristic can be estimated originating in the action of SiO_2 & Al_2O_3 in liquid phase and synthesizing of zeolite.
日本粘土学会の論文
1973-12-25