Hydrocarbon conversion catalyst containing MFI zeolite and preparation method thereof
A catalyst and zeolite technology, applied in physical/chemical process catalysts, hydrocarbon cracking to hydrocarbons, molecular sieve catalysts, etc., can solve the problems of improving performance of molecular sieve catalysts containing MFI structure, not involving anti-metal pollution, reducing coke yield, etc. , to achieve good activity stability and selectivity, good anti-iron pollution ability, and increase yield
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[0038] According to the first specific embodiment of the hydrocarbon conversion catalyst containing MFI structure zeolite provided by the present invention, wherein the high specific heat capacity matrix material contains Al 2 o 3 5-94.5% by weight of alumina, MnO 2 5-94.5% by weight manganese oxide and P 2 o 5 0.5-10% by weight phosphorus oxide, boron nitride-free. For example, the high specific heat capacity matrix material includes 15-70% by weight or 20-65% by weight or 25-60% by weight of manganese oxide, 29-84% by weight or 35-80% by weight or 39-74% by weight of oxide Aluminum and 0.8-8% by weight phosphorus oxide.
[0039] According to the first specific embodiment of the hydrocarbon conversion catalyst containing MFI structure zeolite provided by the present invention, the pore volume of the high specific heat capacity matrix material is 0.5-1.0 cm 3 / g such as 0.55-0.8cm 3 / g. The average pore diameter of the high specific heat capacity matrix material is 3-12...
specific Embodiment approach
[0047] A specific embodiment, the preparation method of the high specific heat capacity matrix material, comprises the following steps:
[0048] (1) The aluminum source solution and the alkali solution are mixed to form a gel at room temperature to 85° C., and the pH value of the formed colloid is controlled to be 7-11;
[0049] (2) configuration pH is the manganese salt solution that is 3-7, manganese salt solution is mixed with urea, stirs; Urea and manganese ion molar ratio are 1-5; The temperature that this manganese salt solution mixes with urea has no special requirement, for example Carry out the mixing at room temperature, the stirring time is for example 30-60 minutes;
[0050] (3) Mix the product obtained in step (1), the product obtained in step (2) and optional boron nitride, and age at room temperature to 120° C. for 4-72 hours; and
[0051] (4) Filtrate the aged product obtained in step (3), optionally perform a first wash to obtain an aged solid precipitate, co...
preparation example 1
[0149]This example illustrates the preparation process of the high specific heat capacity matrix material provided by the present invention.
[0150] The concentration of 350gAl 2 o 3 / L Al 2 (SO 4 ) 3 solution with CO 3 2- The ammonium carbonate solution with a concentration of 0.10 mol / L was mixed at 20° C. to form a colloid, and the obtained colloid had a pH value of 7.5, and a slurry A was obtained. To a concentration of 145gMnO 2 / L MnCl 2 Add hydrochloric acid (concentration 36% by weight) to the solution to control the pH=3.5, then add urea to the solution, the molar ratio of urea to manganese ions is 2, and stir at room temperature for 30 minutes to obtain solution B. Add solution B to slurry A, stir and age at 80°C for 24 hours, wait until the temperature of the system drops to room temperature, filter, and rinse with deionized water until the rinsed water is neutral, and an aged solid precipitate is obtained, and then According to the aged solid precipitate ...
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Abstract
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