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Abstract�� Supercritical fluid is applied to the formation of ultrafine powder as a new technology. With the better ability of dissolving, difusing and transferring, high-quality ultrafine powder can be prepared. It includes the methods of Rapid Expansion of Supercritical Solution (RESS), the method of Gas Anti-Solvent (GAS) and the method of Water-in-Supercritical fluid Microemulsion. In this article the principles of RESS, GAS and Water-in-Supercritical fluid Microemulsion are reviewed, and the reseach status quo in food, pharmacy and chemical materials and so on is presented in detail.

Keywords��

Received 2002-11-15; published 2002-11-15

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��Ң��,��.��ٽ��Ʊ��΢��о��չ[J]. ��ѧ��ҵ�빤��, 2002,19(6): 458-461

GAO Yao lai, WEN Qi biao .Progress in Formation of Ultrafine Powder by Supercritical Fluid[J]. Chemcial Industry and Engineering, 2002,19(6): 458-461

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