Synthesis route of microporous metallophosphates by in situ generation of the structure directing agent: the gallophosphate Ea-TREN GaPO

Abstract

This work focuses on the synthesis of microporous materials by a new synthesis route developed in the phosphate-based system (aluminophosphates, gallophosphates, etc.). It consists in the in situ generation of the structure-directing agent (SDA) from alkylformamides. These molecules decompose into alkylamines and the in situ release of the amine during the synthesis appears to be a key step in the crystallization of the phosphate- based materials. Indeed, experiments performed directly in the presence of alkylamine in the starting mixture did not lead to the crystallization of the same materials.