Synthesis method of titanium-containing molecular sieve
A synthesis method and molecular sieve technology, applied in the direction of molecular sieve catalysts, chemical instruments and methods, crystalline aluminosilicate zeolites, etc., can solve problems such as cyclic molecular amines that have not yet been seen, and achieve reduced production costs, less pollutant emissions, good repeatability
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Embodiment 1
[0030] Synthesis of the first step directing agent
[0031] SiO in molar ratio tetraethylsilicate 2 : Tetrapropylammonium hydroxide : TiO in tetrabutyl titanate 2 :H 2 O is 1:0.1:0.04:20, prepare a reaction mixture, conduct hydrolysis at 60°C to form a gel for 0.5 to 1 hour, then raise the temperature to 80°C, and chase the alcohol for 4 hours to prepare the directing agent;
[0032] Preparation of the second reaction mixture
[0033] The silicon source is silica gel, the titanium source is tetrabutyl titanate, the template agent is hexamethyleneimine, and the SiO in the silicon source is molar ratio 2 : Organic base template: TiO in titanium source 2 :H 2 O is 1:1:0.033:12 to prepare the mixture solution, add SiO in the silicon source 2 The directing agent that the last step of 3% of weight makes, forms reaction mixture;
[0034] The third step of hydrothermal crystallization
[0035] Hydrothermal crystallization at 170°C for 4 days to obtain TS-1 molecular sieve.
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Embodiment 2
[0038] Implementation process is except following difference, and all the other are all the same with embodiment 1:
[0039] Synthesis of the first step directing agent
[0040] Molar ratio of SiO in silicon source 2 : Organic base template: TiO in titanium source 2 :H 2 O is 1:0.2:0.1:80;
[0041] Preparation of the second reaction mixture
[0042] The organic template is a mixture of hexamethyleneimine and piperidine, and the molar ratio of the two is 5:5.
[0043] The XRD spectrum of TS-1 molecular sieve is similar to Figure 1, and the IR spectrum is similar to Figure 2.
Embodiment 3
[0045] Implementation process is except following difference, and all the other are all the same with embodiment 1:
[0046] Preparation of the second reaction mixture
[0047] The organic template is piperidine, adding SiO based on silicon source 2 15% by weight of the directing agent prepared in the previous step to form a reaction mixture.
[0048] The XRD spectrum of TS-1 molecular sieve is similar to Figure 1, and the IR spectrum is similar to Figure 2.
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