Microwave method for rapidly preparing short-rod-like SBA-15
The invention discloses a microwave method for rapidly preparing short-rod-like SBA-15. P123 is dissolved in a certain quantity of 1.5 M hydrochloric acid solutions and stirred to be clear at 38 DEG C, and the mass ratio of P123 to 1.5M hydrochloric acid is 1:(30-40); a silicon source is slowly drop...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a microwave method for rapidly preparing short-rod-like SBA-15. P123 is dissolved in a certain quantity of 1.5 M hydrochloric acid solutions and stirred to be clear at 38 DEG C, and the mass ratio of P123 to 1.5M hydrochloric acid is 1:(30-40); a silicon source is slowly dropwise added to the solutions and fiercely stirred for 6-8 min, the mixed solution is left to stand and aged in a water bath at the temperature of 38 DEG C for 24 h, and the mass ratio of P123 to the silicon source is 1:(2-3); an obtained white reaction product is transferred into a microwave reaction kettle to react at the temperature of 20-40 DEG C for 30 min; cooling, suction filtration and water washing are performed, and white powder is obtained after being dried at the room temperature; the white powder is heated to 550 DEG C in the air at the speed of 2 DEG C/min and calcined for 5 h, and short-rod-like SBA-15 in different lengths is prepared. The prepared SBA-15 has good dispersity and highly ordered pore siz |
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