Cysteine modified SBA-15 mesoporous material and preparation method thereof
A technology of NH2-SBA-15 and cysteine, applied in chemical instruments and methods, silicate, aluminum silicate, etc., can solve problems such as secondary pollution, achieve high controllability, good application prospects, The effect of simple process
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Embodiment 1
[0053] Weigh 4.0g triblock copolymer surfactant P123 and dissolve in 120mL hydrochloric acid with a concentration of 2mol / L and 30mL deionized water, place the mixed solution in a water bath at 38°C and stir until the solution is clear, then slowly add TEOS, continue Stir for 10 minutes, then let stand for 24 hours. Hydrothermal treatment at 100°C for 24 hours, after cooling, repeated filtration and washing with deionized water, the obtained powder was dried at 100°C, placed in a muffle furnace, and slowly heated to 550°C for 5 hours to remove the surfactant. Obtain white mesoporous material SBA-15;
[0054] Activate the obtained SBA-15 in boiling water for 3 hours, filter and dry; take 2.2g of the above product and 5mL APTES, dissolve it in 250mL dry toluene, reflux at 110°C for 20 hours under a nitrogen atmosphere, and filter repeatedly with dry toluene and absolute ethanol Wash the powder; finally weigh 3.9g of the above dry powder, cysteine 2.0g, DCC: 3.4g, DMAP: 2.0g, ...
Embodiment 2
[0056] Weigh 4.0g triblock copolymer surfactant P123 and dissolve in 120mL hydrochloric acid with a concentration of 2mol / L and 30mL deionized water, place the mixed solution in a water bath at 38°C and stir until the solution is clear, then slowly add TEOS, continue Stir for 24 hours. Hydrothermal treatment at 100°C for 24 hours, after cooling, repeated filtration and washing with deionized water, the obtained powder was dried at 100°C, placed in a muffle furnace, and slowly heated to 550°C for 5 hours to remove the surfactant. Obtain white mesoporous material SBA-15;
[0057] Activate the obtained SBA-15 in boiling water for 3 hours, filter, and dry; take 1 g of the above product and 5 mL of APTES dissolved in 100 mL of dry toluene, reflux at 110 °C for 20 hours under a nitrogen atmosphere, and repeatedly filter and wash with dry toluene to obtain a powder; Finally, weigh 2.0g of the above powder, 1.0g of cysteine, DCC: 2.02g, DMAP: 0.12g, use 200mL of dry DMF (dimethylform...
Embodiment 3
[0059] Weigh 4.0g of triblock copolymer surfactant P123 and dissolve it in 120mL of 2mol / L hydrochloric acid and 30mL of deionized water, place the mixed solution in a water bath at 38°C and stir until the solution is clear, then slowly add TEOS and stir 24 hours. Hydrothermal treatment at 100°C for 24 hours, after cooling, repeated filtration and washing with deionized water, the obtained powder was dried at 100°C, placed in a muffle furnace, and slowly heated to 550°C for 5 hours to remove the surfactant. Obtain white mesoporous material SBA-15;
[0060] Activate the obtained SBA-15 in boiling water for 3 hours, filter, and dry; take 1.5 g of the above product and 8 mL of APTES dissolved in 150 mL of dry toluene, reflux at 110 °C for 20 hours under a nitrogen atmosphere, and repeatedly filter and wash with dry toluene to obtain a powder ;Finally weigh 1.6g of the above powder, 0.8g of cysteine, DCC: 0.8g, DMAP: 0.015g, and use 160mL of dry DMF (dimethylformamide) as a solve...
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