Propane dehydrogenation catalyst, preparation method thereof, and method for producing propylene from propane dehydrogenation
A propane dehydrogenation and catalyst technology, applied in the direction of catalysts, molecular sieve catalysts, carbon compound catalysts, etc., can solve the problems of low propane conversion rate, propylene selectivity, complex preparation process, environmental pollution, etc., and achieve high catalytic activity and simple preparation process , post-processing simple effects
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Embodiment 1
[0066] This example is used to illustrate the propane dehydrogenation catalyst and its preparation method.
[0067] (1) Preparation of spherical mesoporous sepiolite composite support
[0068] Add 1g (0.0002mol) of triblock copolymer surfactant P123 and 1.69g (0.037mol) of ethanol to 28ml of acetic acid and sodium acetate buffer solution with a pH value of 4, and stir at 15°C until P123 is completely dissolved. Add 6g (0.053mol) trimethylpentane to the obtained solution afterwards, stir at 15°C for 8h, then add 2.13g (0.014mol) tetramethoxysilane to it, at 15°C, the pH value is 4.5 Stirred under conditions for 20h, then transferred the obtained solution to a polytetrafluoroethylene-lined reactor, crystallized at 60°C for 24h, then filtered and washed 4 times with deionized water, and then suction filtered to obtain a one-dimensional Mesoporous molecular sieve material filter cake A1 with hexagonal channel distribution structure;
[0069] The water glass with a concentration ...
Embodiment 2
[0091] This example is used to illustrate the propane dehydrogenation catalyst and its preparation method.
[0092] (1) Preparation of spherical mesoporous sepiolite composite support
[0093]Add 1g (0.0002mol) of triblock copolymer surfactant P123 and 1.84g (0.04mol) of ethanol to 28ml of acetic acid and sodium acetate buffer solution with a pH value of 5, and stir at 15°C until P123 is completely dissolved. Then add 9.12g (0.08mol) trimethylpentane to the resulting solution, stir at 15°C for 8h, then add 3.04g (0.02mol) tetramethoxysilane to it, at 25°C, pH value is 5.5 Stirring for 15h under the condition of , then transferring the obtained solution to a polytetrafluoroethylene-lined reactor, crystallizing at 100°C for 10h, then filtering and washing with deionized water for 4 times, and then suction filtering to obtain a Mesoporous molecular sieve material filter cake A2 with hexagonal pore distribution structure;
[0094] Concentration is that the water glass of 15% by ...
Embodiment 3
[0104] This example is used to illustrate the propane dehydrogenation catalyst and its preparation method.
[0105] (1) Preparation of spherical mesoporous sepiolite composite support
[0106] Add 1g (0.0002mol) of triblock copolymer surfactant P123 and 2.76g (0.06mol) of ethanol to 28ml of acetic acid and sodium acetate buffer solution with a pH value of 4, and stir at 15°C until P123 is completely dissolved. Add 6g (0.053mol) trimethylpentane to the obtained solution afterwards, stir at 15°C for 8h, then add 2.13g (0.014mol) tetramethoxysilane to it, at 15°C, the pH value is 4.5 Stirred under the conditions for 10h, then transferred the obtained solution to a polytetrafluoroethylene-lined reactor, crystallized at 60°C for 24h, then filtered and washed 4 times with deionized water, and then suction filtered to obtain a one-dimensional Mesoporous molecular sieve material filter cake A3 with hexagonal channel distribution structure;
[0107] The concentration is that the wate...
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