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大孔介孔硅的制備
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按照以下文獻(xiàn)處方做大孔介孔硅載體,12 mL of water phase was obtained by mixing 4.8 mL CTAC (25% water solution), 0.04 g TEA, and 7.2 mL Milli-Q ultrapure water and stirred at 60 °C for 1 h. Then premixed 4 mL of oil phase (containing 3.5 mL chlorobenzene and 0.5 mL TEOS) was added to the bottom of water phase. The mixture was stirred at 60 °C under a stirring speed of 500 RPM for 12 h, The solid samples were centrifuged at 15 000 RPM for 15 min and washed with ethanol for three times. The final products were obtained after calcination at 550 °C for 5 h. 制備的載體在醇洗的時候就比較難分散,成片狀,直接去測粒徑很大,每次超聲完都能看見小顆粒,并且超聲完以后載體呈絮狀往上飄,干燥后過篩去煅燒以后載體也呈晶體顆粒,超聲都很難超開,并且靜電大,有沒有大佬能夠指點(diǎn)一下怎么篩處方呀,這個處方看著很簡單,但是很多細(xì)節(jié)都沒有說,我已經(jīng)篩了處方篩了兩個多月了,已篩攪拌速度(快和慢),還有TEA的量,做出來的現(xiàn)象都不太對,不知道后邊怎么篩了,感謝各位做載體的大神指點(diǎn) 發(fā)自小木蟲Android客戶端 |
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