公开(公告)号：US06670402B1

公开(公告)日：2003-12-30

申请号：US09693390

申请日：2000-10-20

申请人： Kang P. Lee ,  Redouane Begag ,  Zlatko Altiparmakov

发明人： Kang P. Lee ,  Redouane Begag ,  Zlatko Altiparmakov

IPC分类号： B01J1300

CPC分类号： C01B33/1585 ,  B01J13/0091 ,  Y02P20/544

摘要： Methods of more rapidly producing aerogel products by means of a rapid solvent exchange of solvent inside wet gels with supercritical CO2 by injecting supercritical, rather than liquid, CO2 into an extractor that has been pre-heated and pre-pressurized to substantially supercritical conditions or above. Preferably, pressure waves are applied to the supercritical CO2 to enhance the solvent exchange. The rapid solvent exchange process is followed by depressurization, optionally with a gas exchange. Preferably, pressure waves are used to speed up the depressurization. The process greatly reduces the time for forming aerogel products.

摘要翻译： 通过在具有超临界CO 2的湿凝胶中快速溶剂交换溶剂，通过将超临界而不是液体CO 2注入到已经被预热和预加压至基本上超临界条件或以上的萃取器中来更快速地生产气凝胶产品的方法 。 优选地，将压力波施加到超临界CO 2以增强溶剂交换。 快速的溶剂交换过程之后是减压，任选地进行气体交换。 优选地，使用压力波来加速减压。 该方法大大减少了形成气凝胶产品的时间。