Propane dehydrogenation catalyst and preparation method thereof and method for preparing propylene through propane dehydrogenation
A propane dehydrogenation and catalyst technology, which is applied to catalysts, molecular sieve catalysts, carbon compound catalysts and other directions, can solve the problems of complex preparation process, low propane conversion rate and propylene selectivity, environmental pollution, etc., and achieves simple preparation process and high catalytic activity. , post-processing simple effects
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Embodiment 1
[0069] This example is used to illustrate the propane dehydrogenation catalyst and its preparation method.
[0070] (1) Preparation of spherical three-mesoporous diatomite composite carrier
[0071] Dissolve 6g (0.001mol) of triblock copolymer surfactant P123 in 10ml of hydrochloric acid aqueous solution with a pH value of 4 and 220ml of deionized aqueous solution, stir for 4h until P123 dissolves to form a transparent solution, and then add it to the transparent solution Add 6g (0.08mol) of n-butanol and stir for 1h, then place it in a water bath at 40°C, slowly add 12.9g (0.062mol) of tetraethyl orthosilicate into the solution, and keep the temperature at about 40°C. Stir for 24 hours at a pH value of 4.5, then hydrothermally treat at 100°C for 24 hours, then filter and wash with deionized water for 4 times, and then suction filter to obtain filter cake A1 of No. 1 mesoporous molecular sieve material with three-dimensional cubic channels ;
[0072] Hexadecyltrimethylammoni...
Embodiment 2
[0094] This example is used to illustrate the propane dehydrogenation catalyst and its preparation method.
[0095] (1) Preparation of spherical three-mesoporous diatomite composite carrier
[0096] Dissolve 6g (0.001mol) of triblock copolymer surfactant P123 in 10ml of hydrochloric acid aqueous solution with a pH value of 4 and 220ml of deionized aqueous solution, stir for 4h until P123 dissolves to form a transparent solution, and then add it to the transparent solution Add 6.7g (0.09mol) n-butanol and stir for 1h, then place it in a water bath at 40°C, slowly add 10.4g (0.05mol) ethyl tetrasilicate to the solution dropwise, and keep the temperature at about 40°C , pH value of 5 under the condition of stirring for 24 hours, then hydrothermal treatment at 90 ° C for 36 hours, followed by filtration and washing with deionized water for 4 times, and then suction filtration to obtain the filter cake of No. 1 mesoporous molecular sieve material with three-dimensional cubic channe...
Embodiment 3
[0108] This example is used to illustrate the propane dehydrogenation catalyst and its preparation method.
[0109] (1) Preparation of spherical three-mesoporous diatomite composite carrier
[0110] Dissolve 6g (0.001mol) of triblock copolymer surfactant P123 in 10ml of hydrochloric acid aqueous solution with a pH value of 4 and 220ml of deionized aqueous solution, stir for 4h until P123 dissolves to form a transparent solution, and then add it to the transparent solution Add 5.2g (0.07mol) n-butanol and stir for 1h, then place it in a water bath at 40°C, slowly add 12.5g (0.06mol) ethyl tetrasilicate to the solution dropwise, and keep the temperature at about 40°C , pH value of 5 under the condition of stirring for 24 hours, and then hydrothermal treatment at 100 ° C for 36 hours, followed by filtration and washing with deionized water for 4 times, and then suction filtration to obtain the filter cake of No. 1 mesoporous molecular sieve material with three-dimensional cubic c...
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