The products obtained were purified by extraction with copper sulfate solution, filtration through silica gel, recrystallization and vacuumsublimation.
粗产物经硫酸铜溶液萃取、硅胶过滤、重结晶、真空升华进行分离提纯得到纯产品。
2
The article gives optimize control aimed function in vacuumsublimation drying process, optimize control method and the introduction of ZDG-40 freeze drying equipment heating system.
介绍了真空升华干燥过程优化控制目标函数及其优化控制方法，ZDG - 40冷冻干燥机加热系统。
3
The method comprises the following steps of: preparing and prefreezing materials, drying the materials by sublimation and desorption under vacuum, and hermetically conserving the materials.