CRYSTALLINE ALUMINOPHOSPHATE OF THE MOLECULAR-SIEVE TYPE, AND METHOD FOR ITS PREPARATION

摘要

Microporous crystalline aluminophosphate having an essential framework structure whose chemical composition expressed in terms of mole ratios of oxides is Al203 : 1.0 +/- 0.2 P205 and having a characterisitic X-ray powder diffraction pattern containing at least the following lines: Process for preparing the aluminophosphate which comprises forming a reaction mixture having a composition expressed in terms of mole ratios of oxides of Al203 : 0.5 to 3 P205 : 10-200 H20 and containing from about 1.0 to about 6 moles of di-n-propylamine per mole of Al203 and seed crystals of said crystalline aluminophosphate, and heating the reaction mixture thus formed at a temperature of at least 100 DEG C. under autogenous pressure until newly formed crystals of said aluminophosphate exist therein.