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问题:超临界干燥法是什么?
类型:求助 (悬赏分:3分)
提问:lybzjd
等级:
版块:纳米科技(yunshiyu,zjb771019,)
信誉:67%
回复:5
阅读:1256
时间:2005-11-10 10:28:43  编辑    加入/取消收藏    订制/取消短消息    举报该贴    

请大家解释一下!谢谢
回复人:老汉, (国家公职人员) 时间:2011-03-18 15:12:12   编辑 1楼
超临界干燥法实际上是应用超临界流体的正萃与反萃的原理哦。


回复人:laihama,▲▲▲ (从水热合成纳米材料转行搞有机合成,正在上路中。。。) 时间:2005-11-10 13:00:36   编辑 2楼
还真是长见识啊
我也期待高手解释
只听过超临界萃取


回复人:xuefeng, (不留任何遗憾,不错过任何机遇。) 时间:2005-11-10 14:18:31   编辑 3楼
Supercritical drying process: The product was dried in a 300 ml autoclave (Polaron critical point dryer,Ted Pella).100 ml of EtOH was placed in the autoclave with the gel, and the remaining volume was filled with CO2 at 5℃ and 870 psi. The vessel was purged several times with CO2 , until the effluents were ethanol dry. The vessel was then heated to 45℃ and CO2 was vented to maintain a constant pressure of 1400 psi. The system was held at these conditions for 30 m, and then vented to ambient pressure over 1 h.


回复人:lybzjd, (我是一名在读研究生) 时间:2005-11-15 16:07:08   编辑 4楼
已经打分了。


回复人:等待的巧, (新手) 时间:2011-03-19 22:11:59   编辑 5楼
解释得好


得分人:xuefeng-1,


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