A preparation method of a ferrierite molecular sieve catalyst for catalyzing n-butene skeletal isomerization reaction
A ferrierite and isomerization technology, which is applied in molecular sieve catalysts, isomerization hydrocarbon production, physical/chemical process catalysts, etc., can solve the problems of limitations, in-situ synthesis and modification of ferrierite molecular sieve catalysts, etc. To achieve the effect of enhancing the activity
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Embodiment 1
[0019] First, add 0.2g of potassium hydroxide and 0.615g of sodium metaaluminate to a 250ml beaker, then add 40ml of water to dissolve, then add 0.155g of boric acid until completely dissolved, then add 15g of silica sol dropwise, and stir the obtained colloidal solution at room temperature After uniform aging for 2 to 5 hours, 5.1ml template agent ethylenediamine was added, and then the colloidal solution was transferred to a reaction kettle for crystallization at 180°C and autogenous pressure for 96 hours, and then the crystallization reaction was stopped. After washing with water and filtering, the solid product was isolated, dried at 100°C for 2 to 4 hours, and then put into a muffle furnace and roasted at 550°C for 6 hours to obtain a white powder, marked as Ferrierite A1.
[0020] In this example, the conversion rate of n-butene is 55%, and the yield rate of isobutene is 35%.
Embodiment 2
[0022] First, add 0.2g of potassium hydroxide and 0.413g of sodium metaaluminate into a 250ml beaker, then add 40ml of water to dissolve, then add 0.31g of boric acid until completely dissolved, then add 15g of silica sol dropwise, and stir the obtained colloidal solution at room temperature After uniform aging for 2 to 5 hours, 5.1ml template agent ethylenediamine was added, and then the colloidal solution was transferred to a reaction kettle for crystallization at 180°C and autogenous pressure for 96 hours, and then the crystallization reaction was stopped. The solid product was isolated, washed with water, filtered, dried at 100°C for 2 to 4 hours, and then put into a muffle furnace and roasted at 550°C for 6 hours to obtain a white powder marked as Ferrierite A2.
[0023] In this example, the conversion rate of n-butene is 75%, and the yield rate of isobutene is 5%.
Embodiment 3
[0025] First, add 0.2g of potassium hydroxide and 0.656g of sodium metaaluminate to a 250ml beaker, then add 40ml of water to dissolve, then add 0.124g of boric acid until completely dissolved, then add 15g of silica sol dropwise, and stir the obtained colloidal solution at room temperature After uniform aging for 2 to 5 hours, 5.1ml template agent ethylenediamine was added, and then the colloidal solution was transferred to a reaction kettle for crystallization at 180°C and autogenous pressure for 96 hours, and then the crystallization reaction was stopped. The solid product was isolated, washed with water, filtered, dried at 100°C for 2 to 4 hours, and then put into a muffle furnace and roasted at 550°C for 6 hours to obtain a white powder marked as Ferrierite A3.
[0026] In this example, the conversion rate of n-butene is 38%, and the yield rate of isobutene is 28%.
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