高级检索

    高勇, 等. 超临界连续GAS过程制备对苯二酚超细颗粒[J]. 华东理工大学学报(自然科学版), 2001, (4): 338-340.
    引用本文: 高勇, 等. 超临界连续GAS过程制备对苯二酚超细颗粒[J]. 华东理工大学学报(自然科学版), 2001, (4): 338-340.
    Research on Continuous Gas Anti-solvent Crystallization of Hydroquinone Using a Supercritical Fluid[J]. Journal of East China University of Science and Technology, 2001, (4): 338-340.
    Citation: Research on Continuous Gas Anti-solvent Crystallization of Hydroquinone Using a Supercritical Fluid[J]. Journal of East China University of Science and Technology, 2001, (4): 338-340.

    超临界连续GAS过程制备对苯二酚超细颗粒

    Research on Continuous Gas Anti-solvent Crystallization of Hydroquinone Using a Supercritical Fluid

    • 摘要: 建立了一套连续的气体抗溶剂实验装置,以对苯二酚-丙酮-二氧化碳物系为研究对象,利用超临界流体抗溶剂过程制备了对苯二酚超细颗粒并将其结果与文献进行了比较,从而验证了装置的可靠性,同时,对不同的溶液浓度和溶液流量对结晶颗粒形貌与尺寸的影响进行了研究。结果表明,溶液流量增大颗粒粒径减小,而溶液浓度增大颗粒粒径增加;溶液流量较大时(12.00L/min),产品颗粒为菱形晶体,溶液流量较小时(2.00L/min),产品颗粒为棒状晶体;溶液浓度对颗粒形貌影响不大。

       

      Abstract: A continuous gas anti solvent apparatus has been constructed in this research. With hydroquinone acetone carbon dioxide system as a test background, GAS process using supercritical CO 2 is utilized to prepare super fine particles. Comparisons between our results and reference are made to check reliability of the apparatus and influences of solution concentration and flow rate on size and morphology of produced particles are investigated. The results obviously showed that a higher primary solution concentration lead to a decrease in size of the sample particles and a higher primary solution concentration to an increase. The prismatic crystals are formed at high flow rate (12.0mL/min) while the needles created at relatively low flow rate (2.0mL/min).

       

    /

    返回文章
    返回