Mercapto-functionalized organic inorganic hybrid ordered mesoporous silicon material and preparation method thereof
A functionalized, mesoporous silicon technology, applied in the field of materials, can solve problems such as limitations, low content, and difficulty in maintaining an ordered structure, and achieve the effects of good complexation ability, large specific surface area, and low price
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Embodiment 1
[0037] At 40°C, 4.00g F127 (0.32mmol) was dissolved in 15.00g anhydrous ether and stirred for 1 hour to obtain solution A; 2.384g of organosilicon source 3-mercaptopropyltriethoxysilane (10mmol) at 1.0 Hydrolyzed under the condition of g (0.2mol / L) hydrochloric acid for 30 minutes to obtain solution B.
[0038] The two solutions were mixed, 1.8 g of soluble resole resin (4.5 mmol) was added, and the reaction was stirred for 2 hours at 40°C. Then spread the mixture evenly in a petri dish and place it at room temperature for 7 hours to evaporate the organic solvent.
[0039] Finally, it is transferred to an oven at 100°C, and after low-temperature thermosetting for 24 hours, the product is refluxed in a 48wt% sulfuric acid solution at 85°C for 48 hours to remove the surfactant.
[0040] The obtained material has a two-dimensional hexagonal mesoscopic structure (space group p6mm), a pore diameter of 5.4nm, and a pore volume of 0.30cm 3 / g, the specific surface area is 223m 2 / g, sulfhy...
Embodiment 2
[0043] At 40°C, 1.60g F127 (0.13mmol) was dissolved in 10.00g absolute ethanol and stirred for 1 hour to obtain solution A; 0.405g organosilicon source 3-mercaptopropyltriethoxysilane (1.7mmol) and 1.729 g of inorganic silicon source TEOS (8.3 mmol) was hydrolyzed under 1.0 g (0.2 mol / L) hydrochloric acid for 30 minutes to obtain solution B.
[0044] The two solutions were mixed, 1.0 g of soluble resole resin (2.5 mmol) was added, and the reaction was stirred for 2 hours at 40°C. Then spread the mixture evenly in a petri dish and place it at room temperature for 7 hours to evaporate the organic solvent.
[0045] Finally transferred to a 100 ℃ oven, after low temperature thermosetting for 24 hours, the product was refluxed in a 48wt% sulfuric acid solution at 95 ℃ for 48 hours to remove the surfactant.
[0046] The obtained material has a two-dimensional hexagonal mesoscopic structure (space group p6mm), the pore diameter is 5.8nm, and the pore volume is 0.3cm 3 / g, the specific surf...
Embodiment 3
[0048] At 40°C, dissolve 2.0 g of F127 (0.16 mmol) in 10.00 g of absolute ethanol and stir for 1 hour to obtain solution A; 0.654 g of organosilicon source 3-mercaptopropyltrimethoxysilane (3.3 mmol) and 1.396 g of inorganic silicon source TEOS (6.7 mmol) was hydrolyzed under 1.0 g (0.2 mol / L) hydrochloric acid for 30 minutes to obtain solution B.
[0049] Mix the two solutions, add 1 g of soluble resole (2.5 mmol), and stir and react at 40°C for 2 hours. Then spread the mixture evenly in a petri dish and place it at room temperature for 7 hours to evaporate the organic solvent.
[0050] Finally, it is transferred to an oven at 100°C, and after low-temperature thermosetting for 24 hours, the product is refluxed in a 48wt% sulfuric acid solution at 85°C for 48 hours to remove the surfactant.
[0051] The obtained material has a two-dimensional hexagonal mesoscopic structure (space group p6mm), the pore diameter is 4nm, and the pore volume is 0.18cm 3 / g, the specific surface area is ...
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