Method for preparing Ag-AgBr/Al-MCM-41 composite functional material from natural attapulgite
A technology of attapulgite and composite functions, which is applied in the field of photocatalysis and material chemistry, which can solve the problems of cumbersome preparation process, high price, and narrow range of catalyst sources, and achieve cheap and easy raw materials, low production costs, and avoid the use of solvents and the effect of multiple roasting
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Embodiment 1
[0038] Weigh 20g of attapulgite clay, soak it in 80ml 6mol / L HCl at 60°C for 12h, filter with suction, repeatedly wash with deionized water until it is neutral, and dry at 80°C to obtain 18.2g of acidified attapulgite. Weigh 10g of acidified attapulgite, grind with 15g of NaOH solid, mix well, and calcinate at 550°C for 4h. Transfer the roasted mixture to a stirred container, add 65 ml of deionized water, and stir for 24 hours to fully dissolve the soluble aluminosilicate in it, and take the upper layer of leaching solution as a source of silicon and aluminum for later use.
[0039] 0.3g of CTAB was dissolved in 20ml of deionized water at 40℃ for 1h after stirring, and then added to the silicon-alumina source obtained above. Under continuous stirring, use 2mol / L of HNO 3 Adjust the pH of the above solution=7.
[0040] Weigh 0.1g AgNO 3 , Dissolve with 10ml of deionized water and add dropwise to the above mixed solution, and stir for 6h in the dark. The synthesized product was tran...
Embodiment 2
[0042] Weigh 20g of attapulgite clay, soak it in 80ml 6mol / L HCl at 60°C for 12h, filter with suction, repeatedly wash with deionized water until it is neutral, and dry at 80°C to obtain 18.2g of acidified attapulgite. Weigh 10g of acidified attapulgite, grind with 15g of NaOH solid, mix well, and calcinate at 550°C for 4h. Transfer the roasted mixture to a stirred container, add 65 ml of deionized water, and stir for 24 hours to fully dissolve the soluble aluminosilicate in it, and take the upper layer of leaching solution as a source of silicon and aluminum for later use.
[0043] Dissolve 0.7g of CTAB with 20ml of deionized water at 40°C for 1h, then add it to the silicon-alumina source obtained above. Under continuous stirring, use 2mol / L of HNO 3 Adjust the pH of the above solution=7.
[0044] Weigh 0.3g AgNO 3 , Dissolve with 10ml of deionized water and add dropwise to the above mixed solution, and stir for 6h in the dark. The synthesized product was transferred to an autocl...
Embodiment 3
[0046] Weigh 20g of attapulgite clay, soak it in 80ml 6mol / L HCl at 60°C for 12h, filter with suction, repeatedly wash with deionized water until it is neutral, and dry at 80°C to obtain 18.2g of acidified attapulgite. Weigh 10g of acidified attapulgite, grind with 15g of NaOH solid, mix well, and calcinate at 550°C for 4h. Transfer the roasted mixture to a stirred container, add 65 ml of deionized water, and stir for 24 hours to fully dissolve the soluble aluminosilicate in it, and take the upper layer of leaching solution as a source of silicon and aluminum for later use.
[0047] Dissolve 1.1 g of CTAB with 20 ml of deionized water at 40°C for 1 hour and add it to the silicon-aluminum source obtained above. Under continuous stirring, use 2mol / L of HNO 3 Adjust the pH of the above solution=7.
[0048] Weigh 0.5g AgNO 3 , Dissolve with 10ml of deionized water and add dropwise to the above mixed solution, and stir for 6h in the dark. The synthesized product was transferred to an a...
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