Method for preparing titanium silicon molecular sieve catalyst

[0030] Example 1

[0031] In the polymerization kettle, add 7.5g of titanium silicon molecular sieve powder, 90g of polymerized monomer styrene and 30g of divinylbenzene, 60g of pore-forming agent liquid wax, stir and mix well, and when the water bath is heated to 60℃, add the initiator peroxidation 1.5 g of benzoyl and a polymerization temperature of 90° C. for 6 hours to obtain a massive titanium silicate molecular sieve catalyst. Then it is crushed and granulated. After sieving, a catalyst with a suitable particle size is selected, 250 ml of 1,2-dichloroethane is added for swelling, and the swelling is performed at room temperature for 5 hours. After pouring out 1,2-dichloroethane, add 200ml ethyl acetate for solvent extraction. The extraction reaction temperature is 55°C and the extraction time is 4 hours. The same method is used for three extractions to obtain titanium silicate catalyst A. Its physical and chemical properties are shown in Table 1.

[0032] Example 2

[0033] In the polymerization kettle, add 15g of titanium silica molecular sieve powder, 90g of polymerized monomer styrene, 15g of divinyl toluene, 25g of divinyl xylene, and pore former C 5 After stirring and mixing 60 g of fatty alcohol uniformly, when the temperature of the water bath is raised to 80°C, 2.0 g of initiator azobisisobutanol is added, and the polymerization reaction temperature is at 100°C for 6 hours to obtain a massive titanium silicon molecular sieve catalyst. Then it is crushed and granulated. After sieving, a catalyst with a suitable particle size is selected, 250 ml of 1,2-dichloroethane is added for swelling, and the swelling is carried out at room temperature for 5 hours. After pouring out 1,2-dichloroethane, add 200ml of xylene to perform solvent extraction. The extraction reaction temperature is 55°C and the extraction time is 4 hours. The same method is used for three extractions to obtain titanium silicalite catalyst B. The physical and chemical properties are shown in Table 1.

[0034] Example 3

[0035] The weight of the titanium silicon molecular sieve powder in Example 1 was changed to 30 g, the extraction solvent was changed to chloroform, and the rest were the same as in Example 1, to obtain titanium silicon molecular sieve catalyst C. The physical and chemical properties are shown in Table 1.