Porous support, preparation method and application thereof, catalyst, and hydrocracking method
A technology of porous carrier and catalyst, applied in the direction of catalyst carrier, molecular sieve catalyst, physical/chemical process catalyst, etc., can solve the problems to be further improved, and achieve high catalytic activity and effect.
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[0033]The present invention also provides a method for preparing a porous carrier, the method comprising: mixing a precursor capable of forming a heat-resistant inorganic oxide under calcination conditions, a Beta molecular sieve, a peptizer, and water to provide raw materials; fed into an extruder, and extruded after kneading in the extruder to obtain a molded body; the molded body is roasted to obtain the porous carrier, wherein the molded body is in the The temperature at the outlet of the extruder is 40 to 150°C.
[0034] In the process of extruding raw materials with an extruder to obtain a molded body, the cooling conditions of the extruder are generally controlled so that the temperature of the extruded molded body is around room temperature (less than 40° C.), but this The inventors of the invention found in the course of research that the temperature of the molded body at the outlet of the extruder is 40-150° C. to make the most probable pore diameter and pore diamete...
Embodiment 1
[0109] This example is used to illustrate the porous carrier and its preparation method according to the present invention.
[0110] Get SB powder (commercially purchased from sasol company, is a kind of pseudo-boehmite, relative crystallinity is 95.4%, grain size is 49.0nm, dry basis content is 75% by weight) 85.3g, SIRAL 40 powder (commercially purchased From sasol company, silicon oxide content is 40% by weight, aluminum oxide content is 60% by weight, dry basis content is 77.5% by weight, average particle diameter is 55nm) 45.1g, Beta molecular sieve (commercially purchased from Hunan Jianchang Petrochemical Co., Ltd. , the silicon-aluminum ratio is 63.4, and the dry basis content is 83% by weight) 1.2 grams, and 3 g of safflower powder are dry-mixed evenly to obtain a dry powder. Add 2 mL of concentrated nitric acid (concentration: 65% by weight, the same below) into a beaker filled with 92 mL of deionized water, and mix well to obtain an acid solution. Mix the acid liqu...
Embodiment 2
[0112] This example is used to illustrate the porous carrier and its preparation method according to the present invention.
[0113] Get CL powder (commercially purchased from Changling Catalyst Factory, it is a kind of pseudo-boehmite, the relative crystallinity is 98.1%, the grain size is 33.0nm, and the dry basis content is 71% by weight) 84.5g, SIRAL 20 powder ( Commercially purchased from sasol company, silicon oxide content is 20% by weight, aluminum oxide content is 80% by weight, dry basis content is 75% by weight, average particle diameter is 53nm) 46.7g, Beta molecular sieve (commercially purchased from Hunan Jianchang Petrochemical Co., Ltd. Co., Ltd., the silicon-aluminum ratio is 28.6, and the dry basis content is 81% by weight) 6.2 grams, and 2.5 g of safflower powder is dry-mixed evenly to obtain a dry powder. Add 3 mL of concentrated nitric acid into a beaker filled with 93 mL of hot deionized water, and mix well to obtain an acid solution. The acid liquid and...
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