Preparation method of platy SAPO (Silicon Aluminum Phosphate)-34 molecular sieve

The invention relates to a preparation method of a platy SAPO (Silicon Aluminum Phosphate)-34 molecular sieve. The preparation method comprises the following steps: mixing a cubical SAPO-34 molecularsieve with a water solution of isopropylamine, then carrying out hydrothermal treatment for 1 to 7 days at 140 to 180 DEG C, and washing and drying after cooling, thus obtaining the platy SAPO-34 molecular sieve. By controlling the concentration, the reaction temperature and the time of the isopropylamine, the platy SAPO-34 molecular sieve in controllable thickness can be obtained. According to the preparation method disclosed by the invention, the purpose of preparing platy SAPO-34 molecular sieves in different thicknesses can be achieved by controlling the concentration, the reaction temperature and the time of the isopropylamine on the basis of the cubical SAPO-34 molecular sieve. 本发明涉及种片状SAPO-34分子筛的制备方法，将立方形SAPO-34分子筛与异丙胺的水溶液混合，然后在140～180℃下水热处理1～7天，冷却后洗涤、干燥，即得片状SAPO-34分子筛；通过控制异丙胺浓度、反应温度和时间获得以获得厚度可控的上述片状SAPO-34