STUDY ON THE SYNTHESIS, STRUCTURE AND PROPERTY OF A LAYER ALUMINOPHOSPHATE MOLECULAR-SIEVES (ALPO4-CJ)

We have synthesized hydrothermally a novel layer aluminophosphate molecular sieve, and obtained large single crystals. We prove that AlPO4-CJ has layer-structure, the molar ratio of P/Al of the framework is equal to 2, and the P atom of the framework has two terminal oxygens by X-ray powder diffraction and four-circle X-ray diffraction. Three-dimensional space includes protonated ethylenediamine molecules which sustain the framework of AlPO4-CJ by forming hydrogen bond. We also measure it's infrared spectrum and study it's thermal stability.