Method for preparing TS-1 titanium-silicon molecular sieve with nanoclusters
A technology of titanium-silicon molecular sieves and nanocrystals, which is applied in molecular sieves and alkali exchange compounds, chemical instruments and methods, crystalline aluminosilicate zeolites, etc., can solve the problems of high production costs of titanium-silicon molecular sieves, high production cost skeleton titanium content, non Low content of skeleton titanium, etc., to achieve the effect of reducing anatase, uniform solution concentration distribution, and reducing non-skeleton titanium
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Embodiment 1
[0038] Step 1: Mix tetrapropylammonium hydroxide and ethyl orthosilicate at 20°C under anhydrous conditions as A, organic alkali source tetramethylammonium hydroxide as B, and titanium source as butyl titanate Denote it as C; in an ultrasonic environment, mix A, B, and C in a certain proportion and drop them into a beaker and keep the pH value = 9-12, then place it in an ultrasonic environment for crystallization for 30 minutes, and filter to obtain nano clusters and dry them. Step 2: Take a certain proportion of dried nanocrystal clusters and put them into the bottom of the beaker, then mix tetrapropylammonium hydroxide and tetramethylammonium hydroxide to form D, and mix ethyl orthosilicate and butyl titanate to form E ; Under anhydrous and ultrasonic conditions, add D to the beaker, then add E dropwise to the beaker, and obtain the mixed solution F after the titration is completed, move F to the polytetrafluoroethylene reactor, and finally add 200mL of Water, crystallized ...
Embodiment 3
[0040] Step 1: Mix tetrapropylammonium hydroxide and ethyl orthosilicate at 25°C under anhydrous conditions as A, organic alkali source tetraethylammonium hydroxide as B, and titanium source as titanium trichloride as C ; In an ultrasonic environment, mix A, B, and C in a certain proportion and drop them into a beaker and keep the pH value = 11-13, then place it in an ultrasonic environment for crystallization for 90 minutes, filter to obtain nanocrystal clusters and Let it dry. Step 2: Take a certain proportion of dried nano-crystal clusters and put them into the bottom of the beaker, then mix tetrapropylammonium hydroxide and tetraethylammonium hydroxide evenly into D, and mix ethyl orthosilicate and titanium trichloride evenly It is E; under the condition of no water and ultrasound, add D into the beaker, then add E dropwise into the beaker, after the titration is completed, the mixed solution F is obtained, move F to the polytetrafluoroethylene reactor, and finally add 10...
Embodiment 4
[0042] Step 1: Mix tetrapropylammonium hydroxide and ethyl orthosilicate at 20°C under anhydrous conditions as A, organic alkali source tetramethylammonium hydroxide as B, titanium source titanyl sulfate as C; In an ultrasonic environment, mix A, B, and C in a certain proportion and drop them into a beaker and keep the pH value = 11-13, then place it in an ultrasonic environment for crystallization for 70 minutes, and filter to obtain nanocrystal clusters after the ultrasonic is over. its dry. The second step: take a certain proportion of dried nano-crystal clusters and put them into the bottom of the beaker, then mix tetrapropylammonium hydroxide and tetramethylammonium hydroxide evenly to D, and mix ethyl orthosilicate and titanyl sulfate evenly to D E: Under the condition of no water and ultrasonic, add D into the beaker, then add E dropwise into the beaker, after the titration is completed, the mixed solution F is obtained, move F to the polytetrafluoroethylene reactor, an...
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