Method for preparing shape-selective catalyst
A catalyst, a certain amount of technology, applied in the preparation of organic compounds, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of cumbersome preparation of shape-selective catalysts, high cost, and low shape-selective performance, and achieve improved shape-selective performance , low cost, and high shape-selective performance
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Embodiment 1
[0012] Weigh melamine (3 g), add it into dimethyl sulfoxide, wherein the mass ratio of melamine to dimethyl sulfoxide is 1:5, and raise the temperature to 50° C. to dissolve it completely. Then add 3g of microporous molecular sieve MCM-22 into the above solution, the mass ratio of melamine to microporous molecular sieve is 1:1, stir evenly, let it stand at room temperature for 24 hours, dry it in a water bath at 80°C, and then transfer it to air drying Dry it in an oven at 110°C for 6h, put it into a muffle furnace for calcination, use argon as a protective gas, raise the temperature to 500°C at 3°C / min and keep for 4h to obtain the desired shape-selective catalyst Cat1.
Embodiment 2
[0014] Weigh melamine (3 g), add it into dimethyl sulfoxide, wherein the mass ratio of melamine to dimethyl sulfoxide is 1:5, and raise the temperature to 50° C. to dissolve it completely. Then add 15g microporous molecular sieve MCM-22 into the above solution, the mass ratio of melamine to microporous molecular sieve is 1:5, stir evenly, let it stand at room temperature for 24 hours, dry it in a water bath at 80°C, and then transfer it to air drying Dry it in an oven at 110°C for 6h, put it into a muffle furnace for calcination, use argon as a protective gas, raise the temperature to 500°C at 3°C / min and keep for 4h to obtain the desired shape-selective catalyst Cat2.
Embodiment 3
[0016] Weigh melamine (3 g), add it into dimethyl sulfoxide, wherein the mass ratio of melamine to dimethyl sulfoxide is 1:5, and raise the temperature to 50° C. to dissolve it completely. Then add 9g of microporous molecular sieve MCM-22 into the above solution, the mass ratio of melamine to microporous molecular sieve is 1:3, stir evenly, let it stand at room temperature for 24 hours, dry it in a water bath at 80°C, and then transfer it to blast drying Dry it in an oven at 110°C for 6h, put it into a muffle furnace for calcination, use argon as a protective gas, raise the temperature to 500°C at 3°C / min and keep for 4h to obtain the desired shape-selective catalyst Cat3.
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