Abstract: A method for synthesizing high-content NaY molecular sieves with kaolin sprayed microspheres includes adding functional components and deionized water into kaolin so as to be pulped into a mixed slurry. The slurry is sprayed into microspheres. The microspheres are calcined at a temperature between 700 and 1,000° C. and mixed with a directing agent for crystallization. The resultant solid is filtrated and washed with water and then dried to obtain a final in-situ crystallized product with high content of molecular sieves.

Abstract: A method for synthesizing high-content NaY molecular sieves with kaolin sprayed microspheres is provided, comprising that functional components and deionized water are added into the kaolin so as to be pulped mixed slurry, and the slurry is sprayed into microspheres, the sprayed microspheres are calcined at a temperature between 700 and 1,000° C. and the obtained is mixed up with directing agent for crystallization, the resultant solid is filtrated from mother liquid and washed by water. The functional components include structural agents, and the addition of the agents is about 2˜10 percent by mass of the kaolin; the structural agents are one or more of starch, graphite powder, and carboxymenthyl cellulose. Alternatively according to the present invention, one part of the sprayed microspheres with particle sizes of 20˜110 ?m is calcined at high temperature to get high-temperature calcined kaolin microspheres, while the other part is calcined at a low temperature to get meta kaolin microspheres.