Preparation method of crystalline-state silico-aluminum-phosphate material

The invention relates to a preparation method of a crystalline-state silico-aluminum-phosphate material. The preparation method includes following steps: 1) ball-milling zeolite molecular sieve raw powder for 0.5-24 h, adding the ball-milled zeolite molecular sieve raw powder to an inorganic acid solution, and activating the zeolite molecular sieve raw powder at 60-120 DEG C to prepare a crystal seed solution; 2) filling a high-pressure reaction kettle with a phosphorus source, an aluminum source, a silicon source, an organic template agent R and deionized water to prepare a molecular sieve crystallization pre-colloid solution, adding the crystal seed solution, fully stirring and uniformly mixing the solutions, performing crystallization at 130-220 DEG C under a self-generated pressure for 1-24 h; and 3) performing pressure relief at a certain degree to the synthetic reaction kettle system under an in-site high-temperature condition, closing and sealing the high-pressure reaction kettle, and performing further crystallization at the crystallization temperature of 130-220 DEG C for the crystallization time of 2-60 h to prepare the crystalline-state silico-aluminum-phosphate material.