| abstract |
A process for producing a crystalline microporous body under mild conditions using simple equipment in a highly safe state, which process is suited for producing various crystalline microporous bodies usable as adsorbents, catalysts and separating materials. The process is characterized by the use of a crystallization regulator comprising a cationic compound or an amine and the starting material containing a silicate having an ideal compositional formula of NaHSi2O5 or silicon dioxide or the use of the starting material containing silicon dioxide and an aluminum salt, and comprises the step of mixing the reactants, the step of conducting solid-liquid separation of the fine particles thus formed, and the step of crystallizing the solid component thus separted. As compared with the conventional hydrothermal synthesis process requiring such severe conditions as high temperature, pressure and alkalinity, this process is improved in safety and economy, serves to control the pore diameters arbitrarily, and gives a molded body retaining a high content of the porous structure. |