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小木虫论坛-学术科研互动平台 » 化学化工区 » 无机/物化 » 经验交流 » Need help for purification of LiClO4 and tetramethyl ammonium perchlorate
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solarcell

银虫 (小有名气)

[交流] Need help for purification of LiClO4 and tetramethyl ammonium perchlorate

Could someone tell me where I can find information on purification of LiClO4 and tetramethyl ammonium perchlorate
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1楼 2006-06-27 07:58:14
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solarcell

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引用回帖:
Originally posted by miniearth at 2006-7-1 19:23:
你提到的两个化合物目前都是电解质。你如果需要提纯到4个9以上的纯度，那是技术机密，估计很难找到答案。一般可以从生产电解质的公司得到纯度很高的物质。

Thanks
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8楼2006-07-03 12:55:27
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ulanhot

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huyuchem(金币+1):thanks
anhydrous lithium perchlorate is prepared by heating the commercially available anhydrous material or its trihydrate at 160 °C for 48 h under high vacuum (P2O5 trap).
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2楼2006-06-27 22:17:53
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solarcell

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Originally posted by ulanhot at 2006-6-27 22:17:
anhydrous lithium perchlorate is prepared by heating the commercially available anhydrous material or its trihydrate at 160 °C for 48 h under high vacuum (P2O5 trap).

Your answer comes from Encyclopedian of Reagents. But it is kind of dangeous. Any better suggestion? Thanks
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3楼2006-06-27 23:56:56
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lw1966hhh

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crystd from water or 50% aq MeOH.
Rendered anhydrous by heating the trihydrate at 170-180 OC IN AN AIR OVEN.
RECRYSTD TWICE from acetonitrile and again dried under vacuum.
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4楼2006-06-30 18:55:32
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