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lcliuchem

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[交流] 【请教】谁能在此写一下用TEOS、CTAB做MCM-41比较标准的步骤

还可以捎带上SBA-15,原料也用TEOS。
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mland

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★ ★
nxl5096224(金币+2,VIP+0):(*^__^*)
The preparation of highly ordered MCM-41 with extremely
low surfactant concentration
庞文琴等的(Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Department of Chemistry, Jilin University,)
Microporous and Mesoporous Materials 32 (1999) 1–15

As a typical run (sample 9) with NH4OH, synthetic
procedures were as follows: (1) 205 ml of
NH4OH (25 wt.% solution) were mixed with
270 ml of distilled water; (2) 2.0 g of surfactant
were added into the solution with stirring and
heating; (3) when the solution became homogenous,
10 ml of TEOS were introduced, giving rise
to a white slurry; (4) after 2 h, the resulting
product was filtered, washed with distilled water,
dried at ambient temperature, and followed by
calcination in air at 823 K for 4 h.
2楼2008-12-15 14:34:39
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lcliuchem

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谢谢啦,很简单是吧
3楼2008-12-15 17:02:37
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buct_xjq

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nxl5096224(金币+1,VIP+0):3Q!
0.68gCTAB加入到38ml水中,10min后加入氨水5.8ml搅拌半小时,后加入TEOS5.8ml,在常温下搅拌4h,抽虑,烘干,550度下焙烧
参考文献:T.R. Gaydhankar, V. Samuel, R.K. Jha, R. Kumar, P.N. Joshi Room temperature synthesis of Si-MCM-41 using polymeric version of ethyl silicate as a source of silica。Materials Research Bulletin 42 (2007) 1473–1484
不行就分,喜欢就买,多喝点水,重启试试。
4楼2008-12-15 20:47:27
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