Functionalized mesoporous molecular sieve catalyst S-Ti-MCM-41 as well as preparation method and application thereof
A s-ti-mcm-41, mesoporous molecular sieve technology, applied in molecular sieve catalysts, physical/chemical process catalysts, preparation of carbon-based compounds, etc. Low problems, to achieve the effect of increasing adsorption and active sites, low cost, avoiding damage and collapse
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Embodiment 1
[0026] (1) Preparation of precursor solution: at room temperature, 1.14g template agent cetyltrimethylammonium bromide (CTAB) and 0.32g NaOH were stirred and dissolved in distilled water. Slowly add 5.6mL TEOS to the template solution under stirring, continue to stir for a certain period of time after the dropwise addition is completed, then slowly add 0.43mL TBOT solution to the mixed solution, and continue to stir for 2 hours after the dropwise addition is completed. During the preparation of the precursor solution, the pH value of the solution was always kept between 10.0 and 11.0.
[0027] (2) Crystallization, roasting, and demoulding of the precursor: transfer the above reaction solution into a hydrothermal kettle with a polytetrafluoroethylene liner, seal it, put it in an oven, and crystallize at 90°C for 72 hours. Then, it was cooled, washed with distilled water until the filtrate was neutral, filtered, and then the crystallized product was dried at 100°C for 24 hours, ...
Embodiment 2
[0030](1) Preparation of precursor solution: at room temperature, 1.14g template agent cetyltrimethylammonium bromide (CTAB) and 0.32g NaOH were stirred and dissolved in distilled water. Slowly add 5.6mL TEOS to the template solution under stirring, continue to stir for a certain period of time after the addition is completed, then slowly add 0.43mL TBOT solution to the mixed solution, and continue to stir for 3 hours after the addition is completed. During the preparation of the precursor solution, the pH value of the solution was always kept between 10.0 and 11.0.
[0031] (2) Crystallization, roasting and demoulding of the precursor: transfer the above reaction solution into a hydrothermal kettle with a polytetrafluoroethylene liner, seal it, put it in an oven, and crystallize at 95°C for 72 hours. Then, it is cooled, washed with distilled water until the filtrate is neutral, filtered, and then the crystallized product is dried at 100°C for 24 hours, and then it is placed i...
Embodiment 3
[0034] (1) Preparation of precursor solution: at room temperature, 1.14g template agent cetyltrimethylammonium bromide (CTAB) and 0.32g NaOH were stirred and dissolved in distilled water. Slowly add 5.6mL TEOS to the template solution under stirring, continue to stir for a certain period of time after the dropwise addition is completed, then slowly add 0.43mL TBOT solution to the mixed solution, and continue to stir for 4 hours after the dropwise addition is completed. During the preparation of the precursor solution, the pH value of the solution was always kept between 10.0 and 11.0.
[0035] (2) Crystallization, roasting and demoulding of the precursor: transfer the above reaction solution into a hydrothermal kettle with a polytetrafluoroethylene liner, seal it, put it in an oven, and crystallize at 100°C for 48 hours. Then, it was cooled, washed with distilled water until the filtrate was neutral, filtered, and then the crystallized product was dried at 100°C for 24 hours, ...
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