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将3g微粒硅胶用3M的盐酸水溶液酸化24h。抽滤，于110℃下干燥12h。 将酸化好的干燥硅胶3g置于圆底烧瓶中，加入40mL无水甲苯，搅拌均匀，再加入4mL3-氨基丙基三乙氧基硅烷KH550，于110℃充分反映3h。 冷却后，抽滤，用乙醇洗涤，60℃干燥12h，即制得氨基丙烷化硅胶（APS）。 [ Last edited by djfyc on 2010-6-14 at 09:21 ] |
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noleg
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发芽土豆(金币+1):谢谢参与 2010-06-14 10:53:08
djfyc(金币+10, 翻译EPI+1):非常感谢 2010-06-14 10:55:51
发芽土豆(金币+1):谢谢参与 2010-06-14 10:53:08
djfyc(金币+10, 翻译EPI+1):非常感谢 2010-06-14 10:55:51
| 3g particulate silica gel is acidified with 3M HCl(aq.) for 24h, filtrated, and dried at 110℃ for 12h. In a round-bottomed flask equipped with mechanical stirrer, the silica gel is placed, and charged with 40mL anhydrous toluen. To the homogeneous solution, 4mL 3-aminopropyltrimethoxylsilicane(KH550) is then added, and reaction is continued for 3h. The mixture is cooled, filtrated, washed with ethanol, and dried at 60℃ for 12h, to give aminopropyl silica gel(APS). |
2楼2010-06-14 10:34:55
xiaoqihu
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wypward(金币+1):谢谢参与 2010-06-14 11:41:37
zehuac(金币+1):谢谢参与哈，希望以后常来应助 2010-06-15 00:18:32
wypward(金币+1):谢谢参与 2010-06-14 11:41:37
zehuac(金币+1):谢谢参与哈，希望以后常来应助 2010-06-15 00:18:32
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3g porous silica was acidified with aqueous HCl (3N) for 24 hours, after filtration, the silica was dried at 110 ℃ for 12 hours. To a well stirred suspension of the above silica and dry toluene in a round-bottomed flask was added 3-aminopropyltrimethoxylsilicane (KH550) (4mL), the reaction mixture was stirred for 3 hours at 110 ℃. after cooled down, the mixture was filtrated, and the filtrated cake was washed with absolute ethanol, and dried at 60 ℃ for 12h to afford aminopropyl silica (APS) |
3楼2010-06-14 11:09:14