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一瞥zp

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[求助] 中孔sio2负载tio2的制备方法

用中孔sio2负载tio2的制备方法及操作,求指教
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cata.fripp

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【答案】应助回帖

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一瞥zp: 金币+1, 谢谢你 2012-08-13 20:36:09
这类文献很多,去WOS检索
2楼2012-08-13 17:43:11
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一瞥zp

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2楼: Originally posted by cata.fripp at 2012-08-13 17:43:11
这类文献很多,去WOS检索

        合成中孔SiO2
1.        将1.265gNaOH溶于8.8gH2O中,搅拌,将配好的NaOH溶液滴加入预先准备好的10gSiO2中,混合后保持70~80℃持续搅拌2h,冷却至室温
2.        SiO2:CnH2n+1N(CH3)3Br:EtOH:NaOH:H2O= 1.4:1.0:5.0:0.7:140   (选择不同的溴烷基三甲基铵n=10,12,14,16)
3.        将表面活性剂(n=16)与水、乙醇搅拌30min,然后将硅源滴加进去,搅拌30min, 110 ℃下煅烧4天,冷却至     70 ℃ ,再冷却至室温
4.        70℃水洗,酸性条件下加入乙醇搅拌1h,以残留的去除表面活性剂。离心醇洗。70℃烘干,540℃煅烧5h
我之前就是用这个方法合成的,但是老是不对,求指点
3楼2012-08-14 15:17:25
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