Method for manufacturing a nanoporous alumina based materials with controlled textural and particle size and nanoporous alumina obtained by said method
A technology of alumina and oxide, applied in the direction of alumina/hydroxide, alumina/hydroxide preparation, chemical instruments and methods, etc., can solve the problem of no control of particle size and shape
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0034] The preparation of the alumina precursor involves dissolving the alumina source in a suitable mixture of non-aqueous solvent and acid. Suitable alumina precursors include aluminum nitrate, aluminum chloride, aluminum oxide and the family of aluminum alkoxides such as aluminum sec-butoxide. Suitable solvents should preferably have a low boiling point. Ethanol is such a solvent, but it is possible to use other solvents such as acetone, propanol, butanol, and the like. Several acids have been used, such as hydrochloric, phosphoric, sulfuric and nitric acids. The final solution should have a pH as close to 1 as possible, therefore, the amount of acid should be adjusted accordingly. [H2O]:[Al3+] should be kept as close to 6 as possible to achieve slow hydrolysis and condensation of aluminum hydroxide, therefore, the acid concentration must be adjusted accordingly. The solution prepared at this stage was stirred vigorously at room temperature to homogenize it.
[0035] St...
Embodiment 1
[0065] Preparation of nanoporous alumina with cubic morphology
[0066] In a typical preparation, 20.0 g of triblock copolymer P123 (EO 20 PO 70 EO 20 , MW=5800) was dissolved in 150.0 ml of ethanol in a polypropylene bottle. To this solution was further added 23.0 ml of mesitylene (trimethylbenzene, TMB), and the remaining surfactant solution was heated at 40° C. with stirring for 24 hours to ensure a homogeneous surfactant solution. In another polypropylene bottle, 30.0 mL of HCl (37%) was mixed with 92.0 mL of ethanol, to which 51.0 mL of sec-butoxide aluminum was slowly added under rapid stirring, and allowed to stand at 40°C for 24 hours to Make sure that the alumina source is fully dissolved. Then, slowly add the remaining clear solution to the surfactant solution at 40°C under stirring, and after about 2 hours, add the required amount of N-lauroyl-lysine (C 12lysine). After the co-surfactant was completely dissolved, the final synthesized gel was allowed to stan...
Embodiment 2
[0070] Preparation of Nanoporous Alumina with Different Pore Sizes
[0071] In a typical preparation, 20.0 g of triblock copolymer P123 (EO 20 PO 70 EO 20 , MW=5800) was dissolved in 150.0 ml of ethanol in a polypropylene bottle. Mesitylene (trimethylbenzene, TMB) was further added to this solution, and the remaining surfactant solution was heated at 40° C. with stirring for 24 hours to ensure a homogeneous surfactant solution. In another polypropylene bottle, 30.0 mL of HCl (37%) was mixed with 92.0 mL of ethanol, to which 51.0 mL of sec-butoxide aluminum was slowly added under rapid stirring, and allowed to stand at 40°C for 24 hours to Make sure that the alumina source is fully dissolved. Then, slowly add the remaining clear solution to the surfactant solution at 40°C under stirring, and after about 2 hours, add the required amount of N-lauroyl-lysine (C 12 lysine). After complete dissolution of the co-surfactant, the final synthesized gel was allowed to stand for a...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More