Multifunctional catalysis composition
A composition and oxide technology, applied in catalytic cracking, chemical/physical process, physical/chemical process catalyst, etc., can solve the problems of alkali metal loss and high gasification temperature
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[0043] In the preparation method of the above-mentioned mesoporous active silicon-phosphorus-aluminum material, the process of contacting with the phosphorus source can have various processes, including dividing the obtained solid precipitate into the precipitate (dry basis): H 2 O=1: (5-20) weight ratio mixed with water for beating, then adding phosphorus source to the above slurry, contacting at room temperature to 90°C for 0.2-5 hours, preferably 0.5-3 hours, filtered and washed at 100 Dry at 10-150°C for 10-20 hours; or directly mix the obtained solid precipitate with the phosphorus source in proportion, grind it evenly, and dry at 100-150°C for 10-20 hours. After the above two processes of contacting with the phosphorus source, optionally, there may also be a step of calcination at 500°C-700°C, preferably for 1-4 hours. The phosphorus source may be ammonium phosphate, diammonium phosphate, ammonium dihydrogen phosphate or phosphoric acid. In the present invention, in the...
Embodiment approach
[0052] The preparation method of the multifunctional catalytic composition provided by the present invention, a preferred embodiment comprises the following steps:
[0053] (1) Neutralize the aluminum source and alkali solution at room temperature to 85°C to form a gel, and control the pH of the gel to be 7-11; according to SiO 2 :Al 2 o 3 =1: (1.0-7.5) weight ratio, add silicon source, age at room temperature to 90°C for 1-5 hours; contact the obtained solid precipitate with ammonium salt or acid solution for a certain period of time, filter to obtain a sodium content lower than 0.3% solid precipitate; combine low sodium solid precipitate with phosphorus source according to P 2 o 5 : Material dry basis = (0.005~0.1): 1 weight ratio contact treatment, and dry at 100℃~150℃ for 10~20 hours, or bake at 500℃~700℃ for 1~4 hours;
[0054] (2) Mix the potassium-containing compound and the silicon-aluminum component with or without the alkaline earth metal compound and beat it, th...
Embodiment 1
[0068] The preparation process before introducing phosphorus in this embodiment is the same as that described in CN1565733A. With a concentration of 90gAl 2 o 3 / L Al 2 (SO 4 ) 3 Solution and concentration 102gAl 2 o 3 / L, NaAlO with a caustic ratio of 1.7 2 The solution is the reaction raw material, and flows into a gel and adjusts the pH of the gel to 9.0, collects a certain amount of the gel, and adds a concentration of 60g SiO under stirring 2 / L of water glass, heated to 80°C and aged for 1.5 hours; 4 Cl solution by precipitate (dry basis): ammonium salt: H 2 O=1:1:12 weight ratio, carry out ion exchange on the silica-alumina precipitate at 60°C to remove sodium ions, and rinse with a large amount of deionized water until the sodium oxide content is lower than 0.3%; then directly reduce the sodium oxide content In 0.3% solid precipitate and phosphoric acid press P 2 o 5 : Material dry basis = 0.008:1 weight ratio mixed, ground evenly and then dried at 120°C for...
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