Tin-containing Beta molecular sieve and preparation method thereof
A molecular sieve, seed crystal technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as non-occurrence
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Embodiment 1
[0029] Example 1: The ratio of tin source to silicon source is 0.01:1.
[0030] Dissolve 0.350g of tin tetrachloride pentahydrate in 15ml of deionized water, add 0.5g of N,N-dimethylethanolamine dropwise to the solution and keep stirring to obtain a colorless clear liquid, which is solution A. In the 100ml beaker, add 21g 35wt% tetraethylammonium hydroxide solution and 0.24g sodium hydroxide successively, then add 15g deionized water and stir at room temperature in fume hood for 2 minutes to obtain solution B, solution A is mixed with solution B to obtain For clear liquid, stir in a constant temperature water bath at 80°C to promote the hydrolysis of tetraethyl silicate until the molar ratio of water to silicon source reaches 0-1:1. After stirring evenly, transfer it to a 100ml polytetrafluoroethylene-lined stainless steel hydrothermal kettle Crystallize in an oven at 140°C for 3 days. After the crystallization is complete, the product is taken out, washed with 1000ml of deion...
Embodiment 2
[0031] Example 2: The ratio of tin source to silicon source is 0.02:1.
[0032] Dissolve 0.710g of tin tetrachloride pentahydrate in 25ml of deionized water, add 0.8g of N,N-dimethylethanolamine dropwise to the solution and keep stirring to obtain a colorless clear liquid, which is solution A. In the 100ml beaker, add 21g 35wt% tetraethylammonium hydroxide solution and 0.24g sodium hydroxide successively, then add 15g deionized water and stir at room temperature in fume hood for 2 minutes to obtain solution B, solution A is mixed with solution B to obtain For clear liquid, stir in a constant temperature water bath at 80°C to promote the hydrolysis of tetraethyl silicate until the molar ratio of water to silicon source reaches 0-1:1. After stirring evenly, transfer it to a 100ml polytetrafluoroethylene-lined stainless steel hydrothermal kettle Crystallize in an oven at 140°C for 3 days. After the crystallization is complete, the product is taken out, washed with 1000ml of deion...
Embodiment 3
[0033] Embodiment 3: The ratio of tin source to silicon source is 0.03:1.
[0034] Dissolve 1.05g of tin tetrachloride pentahydrate in 35ml of deionized water, add 1.5g of N,N-dimethylethanolamine dropwise to the solution and keep stirring to obtain a colorless clear liquid, which is solution A. In the 100ml beaker, add 21g 35wt% tetraethylammonium hydroxide solution and 0.24g sodium hydroxide successively, then add 15g deionized water and stir at room temperature in fume hood for 2 minutes to obtain solution B, solution A is mixed with solution B to obtain For clear liquid, stir in a constant temperature water bath at 80°C to promote the hydrolysis of tetraethyl silicate until the molar ratio of water to silicon source reaches 0-1:1. After stirring evenly, transfer it to a 100ml polytetrafluoroethylene-lined stainless steel hydrothermal kettle Crystallize in an oven at 140°C for 3 days. After the crystallization is complete, the product is taken out, washed with 1000ml of dei...
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