Preparation method of alumina with intensive mesopore diameter distribution
A technology of pore size distribution and alumina, which is applied in the field of metal organic compound synthesis, can solve the problem that it is difficult to obtain mesoporous alumina with highly ordered pores, it is impossible to obtain mesoporous alumina materials, and it is impossible to form bulk mesoporous alumina, etc. problems, to achieve the effect of no environmental pollution and toxic residues, easy filtration, and narrow pore size distribution
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Embodiment 1
[0015] Put 27g of aluminum ingots, 1.33g of anhydrous aluminum trichloride and 51g of n-butanol (water content less than 0.2%) in a 1L four-neck flask with a condenser tube, after reflux reaction for 1h, add 320g of n-butanol and 160g of boiling range It is a mixture of solvent oil at 160°C-165°C, reflux for 18h, and filter while it is hot. Put the filtrate into a 2L four-necked bottle with a temperature of 80°C, add 400g of deionized water at a temperature of 80°C, heat up to 90°C, perform a hydrolysis reaction for 4 hours, separate the alcohol and solvent oil, and then add 500g of deionized water at 95°C, Raise the temperature to 115-180°C, age for 14 hours, distill off the remaining alcohol and solvent oil, and dry at 120°C for 6 hours to obtain 60g of white alumina. After analysis by XRD, differential heat, ICP-MS and BET method, it is proved to be mesoporous alumina, and the purity of alumina is greater than 99.9%.
Embodiment 2
[0017] Put 27g of aluminum ingots, 1.33g of anhydrous aluminum trichloride and 51g of n-pentanol (water content less than 0.2%) in a 1L four-neck flask with a condenser tube, after reflux for 0.5h, add 390g of n-amyl alcohol and 220g of boiling water The process is 160°C-165°C solvent oil, reflux for 0.5h, and filter while it is hot. Put the filtrate into a 2L four-necked bottle with a temperature of 80°C, add 400g of deionized water at a temperature of 80°C, heat up to 90°C, perform a hydrolysis reaction for 4 hours, separate the alcohol and solvent oil, and then add 500g of deionized water at 95°C, Raise the temperature to 115-180°C, age for 14 hours, distill off the remaining alcohol and solvent oil, and dry at 120°C for 6 hours to obtain 60g of white alumina. After analysis by XRD, differential heat, ICP-MS and BET method, it is proved to be mesoporous alumina, and the purity of alumina is greater than 99.9%.
Embodiment 3
[0019] Put 27g of aluminum wire, 1.3g of anhydrous aluminum trichloride and 50g of n-hexanol in a 2L four-neck flask. After reacting for 0.5h, add 460g of n-hexanol and 255g of solvent oil, reflux for 2h, and filter while it is hot. Add 400g of deionized water at 90°C to a 2L four-necked bottle at 90°C, stir and hydrolyze for 2 hours, separate the alcohol, then add 500g of 95°C deionized water, age for 16 hours, distill off the remaining alcohol and solvent oil, 120°C After drying for 6 hours, 60 g of white alumina was obtained. After XRD, differential thermal and ICP-MS analysis, it is proved to be mesoporous alumina, and the purity of alumina is greater than 99.9%.
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