Synthesis method of mesoporous TiO2-Al2O3 composite carrier
A technology of tio2-al2o3, synthesis method, applied in catalyst carriers, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as insufficient uniformity, and achieve the effects of uniform distribution, high specific surface area, and narrow pore size distribution
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Embodiment 1
[0029] At room temperature, under magnetic stirring conditions, 54 g of aluminum sec-butoxide was mixed with 300 mL of benzyl alcohol solvent. After stirring for 20 minutes, add 63 g of titanium isopropoxide; stir for 20 minutes, add 160 mL of oleylamine, and stir for 4 hours. Transfer the solution to a static reaction kettle, seal it tightly, and place it in a dry box. The temperature of the drying oven was set at 180° C., and after 24 hours of constant temperature, it was taken out and cooled naturally. The prepared solution was washed with absolute ethanol and centrifuged three times, and the collected solid powder was dried in a drying oven at 70° C. for 24 hours. Part of the solid powder was dispersed in absolute ethanol for high-resolution observation. Then, the temperature was raised to 500° C. at a rate of 3° C. / min in an air atmosphere, and then calcined at a constant temperature for 6 hours to obtain a Ti-Al composite oxide carrier A.
Embodiment 2
[0031] At room temperature, under the condition of magnetic stirring, 73g of aluminum sec-butoxide was mixed with 300mL of benzyl alcohol solvent. After stirring for 20 minutes, add 42 g of titanium isopropoxide; stir for 20 minutes, add 160 mL of oleylamine, and stir for 3 hours. Transfer the solution to a static reaction kettle, seal it tightly, and place it in a dry box. The temperature of the drying oven was set at 180° C., and after 16 hours of constant temperature, it was taken out and cooled naturally. The prepared solution was washed with absolute ethanol and centrifuged three times, and the collected solid powder was dried in a drying oven at 70° C. for more than 24 hours. Part of the solid powder was dispersed in absolute ethanol for high-resolution observation. Then, the temperature was raised to 500° C. at a rate of 3° C. / min in an air atmosphere, and then calcined at a constant temperature for 6 hours to obtain a Ti-Al composite oxide carrier B.
Embodiment 3
[0033] At room temperature, under the condition of magnetic stirring, 194g of aluminum sec-butoxide was mixed with 300mL of benzyl alcohol solvent. After stirring for 20 minutes, add 28 g of titanium isopropoxide; stir for 20 minutes, add 160 mL of oleylamine, and stir for 4 hours. Transfer the solution to a static reaction kettle, seal it tightly, and place it in a dry box. The temperature of the drying oven was set at 200° C., and after 12 hours of constant temperature, it was taken out and cooled naturally. The prepared solution was washed with absolute ethanol and centrifuged three times, and the collected solid powder was dried in a drying oven at 70° C. for more than 24 hours. Part of the solid powder was dispersed in absolute ethanol for high-resolution observation. Then, the temperature was raised to 500° C. at a rate of 3° C. / min in an air atmosphere, and then calcined at a constant temperature for 6 hours to obtain a Ti-Al composite oxide carrier C.
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