Ordered mesoporous kit-6 loaded zirconium sulfate-aluminum composite oxide solid acid material and its preparation and application
A KIT-6 and aluminum composite technology, which is applied in the direction of catalyst activation/preparation, biofuel, fatty acid esterification, etc., can solve the problems of low acid content, poor structural thermal stability, and deactivation of solid acid materials, and achieves the preparation method Easy to implement, controllable surface acidity, adjustable coating degree
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Embodiment 1
[0048] Slowly add 2.0g of n-butanol dropwise into 80mL of 0.5mol / L hydrochloric acid solution dissolved with 3.26g of glacial acetic acid and 2.0g of P123, and after vigorous stirring at 35°C for 6h, add 4.3g of ethyl orthosilicate to the reaction solution , and keep stirring at this temperature for 24h.
[0049] Put the white solid suspension obtained by the above self-assembly in a closed high-pressure reactor, heat it to 140°C for hydrothermal polymerization treatment for 24 hours, take out the reaction product, filter it with suction, wash it, and dry it to prepare the coated surfactant gel A bundle of ordered mesoporous KIT-6 materials is a white solid.
[0050] in N 2 Under the atmosphere, the white solid obtained above was heated to 550° C. for 2 h at high temperature to promote the partial carbonization and shrinkage of the surfactant micelles existing in the KIT-6 mesoporous channels.
[0051] Next, place the carbonized material in 20 mL of an aqueous solution disso...
Embodiment 2
[0067] Slowly add 2.5g of n-butanol dropwise to 65mL of 1.0mol / L hydrochloric acid solution dissolved with 3.0g of glacial acetic acid and 2.5g of P123, and after vigorous stirring at 35°C for 10h, add 3.02g of methyl orthosilicate to the reaction solution , and keep stirring at this temperature for 24h.
[0068]Put the white solid suspension obtained by the above self-assembly in a closed high-pressure reactor, heat it to 120°C for hydrothermal polymerization treatment for 24 hours, take out the reaction product, filter it with suction, wash it, and dry it to prepare the coated surfactant gel A bundle of ordered mesoporous KIT-6 materials is a white solid.
[0069] in N 2 Under the atmosphere, the white solid obtained above was heated to 450° C. for 2 h at a high temperature, and the surfactant micelles existing in the KIT-6 mesoporous channels were partially carbonized and shrunk.
[0070] Next, place the carbonized material in 15 mL of an aqueous solution in which 0.3 mol...
Embodiment 3
[0077] Slowly add 2.0 g of n-butanol dropwise into 80 mL of 2.0 mol / L hydrochloric acid solution in which 0.84 g of citric acid and 2.2 g of P123 are dissolved, stir vigorously at 35°C for 8 hours, then add 0.96 g of white carbon black to the reaction solution, and Stirring was continued at this temperature for 24h.
[0078] Put the white solid suspension obtained by the above self-assembly in a closed high-pressure reactor, heat it to 120°C for hydrothermal polymerization treatment for 24 hours, take out the reaction product, filter it with suction, wash it, and dry it to prepare the coated surfactant gel A bundle of ordered mesoporous KIT-6 materials is a white solid.
[0079] in N 2 Under the atmosphere, the white solid obtained above was heated to 550° C. for 2 h at high temperature to promote the partial carbonization and shrinkage of the surfactant micelles existing in the KIT-6 mesoporous channels.
[0080] Next, the carbonized material was placed in 15 mL of an aqueo...
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Abstract
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