高校化学工程学报2001，Vol.15Issue(1)：52-55,4.
碱性溶液中苯丙酮酸钠盐结晶过程研究
Study on Sodium Phenylpyruvate Crystallization in Alkaline Solution
摘要
Abstract
Crystallization of sodium phenylpyruvate (PPNa) by hydrolysis of 5-benzalhydantoin in alkaline solution is studied. In order to increase the yield and purity of product, the method of controlled crystallization is sudied. At first, different type of acids are used for neutralization and then the solubility of sodium phenylpyruvate in alkaline solution is analysed. It is found that hydrochloric acid is better for the yield and purity of PPNa and the optimum volume of HCl used is selected. During crystallization, if velocity of acid dropping, velocity of agitation and time of crystallization are controlled in certain way, uniform and pure product can be obtained. The yield of PPNa crystallization is about 91.7% and the purity of product is about 98.5%.关键词
碱性溶液/苯丙酮酸钠盐/结晶分类
化学化工引用本文复制引用
韦萍,周华,何若平,欧阳平凯..碱性溶液中苯丙酮酸钠盐结晶过程研究[J].高校化学工程学报,2001,15(1):52-55,4.
