文献类型：期刊文献

英文题名：Microparticle formation and crystallization rate of HMX with supercritical CO2 antisolvent recrystallization

作者：Cai, J.[1]; Zhou, Z.[1]; Deng, X.[1]

机构：[1]E China Univ Sci & Technol, Chem Engn Res Ctr, Shanghai 200237, Peoples R China

年份：2001

卷号：9

期号：3

起止页码：258

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：2001426689839);WOS:【SCI-EXPANDED(收录号:WOS:000170765800006)】；

语种：英文

外文关键词：supercritical carbon dioxide; microparticle; recrystallization rate; 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane

摘要：Microparticle formation and crystallization rate of 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) in acetone solution using supercritical carbon dioxide antisolvent (GAS) recrystallization were studied. Scanning electronic microscopy, X-ray diffraction and infrared radiation were used to examine particle size, crystallinity and chemical structure. The results show that beta -HMX microparticle in different average size (2-9.5 mum) and with narrow size distribution were obtained by controlling the expansibility, expansion speed, initial concentration and temperature during recrystallization of HMX. The formation of nuclei may be a main cause of consumption of solute when the solution is expanded rapidly enough and the equilibrium concentration is lower, in which almost monodisperse microparticle can be obtained.