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solarcell

Òø³æ (СÓÐÃûÆø)

[½»Á÷] 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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ulanhot

ľ³æ (ÕýʽдÊÖ)

¡ï
huyuchem(½ð±Ò+1):thanks
anhydrous lithium perchlorate is prepared by heating the commercially available anhydrous material or its trihydrate at 160 ¡ãC for 48 h under high vacuum (P2O5 trap).
2Â¥2006-06-27 22:17:53
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solarcell

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
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 ¡ãC 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
3Â¥2006-06-27 23:56:56
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lw1966hhh

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

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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4Â¥2006-06-30 18:55:32
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solarcell

Òø³æ (СÓÐÃûÆø)

You mean any of them can work, right?
5Â¥2006-07-01 09:15:11
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miniearth

ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)

ÄãÌáµ½µÄÁ½¸ö»¯ºÏÎïĿǰ¶¼Êǵç½âÖÊ¡£ÄãÈç¹ûÐèÒªÌá´¿µ½4¸ö9ÒÔÉϵĴ¿¶È£¬ÄÇÊǼ¼Êõ»úÃÜ£¬¹À¼ÆºÜÄÑÕÒµ½´ð°¸¡£Ò»°ã¿ÉÒÔ´ÓÉú²úµç½âÖʵĹ«Ë¾µÃµ½´¿¶ÈºÜ¸ßµÄÎïÖÊ¡£
6Â¥2006-07-01 19:23:56
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solarcell

Òø³æ (СÓÐÃûÆø)

It is my duty for the whole group. I do not need to care about how many 9 I can obtain. All I care about is how I can purify them.
7Â¥2006-07-03 12:55:10
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solarcell

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
Originally posted by miniearth at 2006-7-1 19:23:
ÄãÌáµ½µÄÁ½¸ö»¯ºÏÎïĿǰ¶¼Êǵç½âÖÊ¡£ÄãÈç¹ûÐèÒªÌá´¿µ½4¸ö9ÒÔÉϵĴ¿¶È£¬ÄÇÊǼ¼Êõ»úÃÜ£¬¹À¼ÆºÜÄÑÕÒµ½´ð°¸¡£Ò»°ã¿ÉÒÔ´ÓÉú²úµç½âÖʵĹ«Ë¾µÃµ½´¿¶ÈºÜ¸ßµÄÎïÖÊ¡£

Thanks
8Â¥2006-07-03 12:55:27
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solarcell

Òø³æ (СÓÐÃûÆø)

we purchased them from the company. The problem is that they sit there too long.
9Â¥2006-07-03 12:57:08
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