Patent ID: 7390762

Claim:
A method for preparing high-content NaY molecular sieves synthesized from kaolin sprayed microspheres, comprising: providing functional components that are structural additives in an amount of about 2 to 10 percent by mass of kaolin, and said structural additives are at least one of starch, graphite powder, and carboxymenthyl cellulose; adding said functional components and water into kaolin so as to be pulped into a mixed slurry; spraying and drying said mixed slurry to form kaolin sprayed microspheres; calcining and mixing said kaolin microspheres with a directing agent to cause crystallization into solid products; collecting said solid products by filtration and washing said solid products with water; and drying said solid products to obtain a final in-situ crystallized product, said in-situ crystallized product having a content of about 40 to 60 wt % of NaY molecular sieves.