Porous support, preparation method and application thereof, catalyst, and hydrocracking method
A porous carrier, hydrocracking technology, 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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[0034] The present invention also provides a method for preparing a porous carrier, the method comprising: mixing precursors capable of forming heat-resistant inorganic oxides under calcination conditions, molecular sieves, peptizers, and water to provide raw materials; sending the raw materials to into the 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 extruded in the extruded The temperature at the exit of the machine is 40-150°C.
[0035] 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 ...
Embodiment 1
[0111] Get 73.8g of C1 powder (commercially purchased from sasol company, dry basis content is 74.5% by weight, is a kind of pseudo-boehmite, relative crystallinity is 93.1%, and average particle diameter is 53nm), silica-alumina powder SIRAL 40 powder ( Commercially available from sasol company, dry basis content is 77.5% by weight, it is a mixture of hydrate of alumina and hydrate of silicon oxide, the content of silicon oxide is 40% by weight, and the content of aluminum oxide is 60% by weight %, the average particle diameter is 55nm, the same below) 51.6g, USY molecular sieve (unit cell constant is 24.55 The relative crystallinity is 74.6%, and the dry basis content is 76.9% by weight) 6.5g, and 4g of safflower powder is dry-mixed evenly to obtain a dry powder. Add 3 mL of concentrated nitric acid (concentration: 65% by weight, the same below) into a beaker filled with 103 mL of deionized water, and mix evenly to obtain an acid solution. The acid liquid and the dry powde...
Embodiment 2
[0113] The porous carrier was prepared by the same method as in Example 1, except that the temperature of the raw material mixture when entering the extruder was room temperature (25° C.), and the obtained porous carrier was designated as porous carrier A2. The most probable pore size, pore size concentration and strength of the porous support are listed in Table 1.
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