it was found that it was more efficient for refining crude anthracene with dmf and for refining crude carbazole with tce.
实验发现dmf对粗蒽制取精蒽效果较好,四氯乙烯对粗咔唑的精制效果明显优于传统工艺。
the effects of solvent, temperature, additive and separation time on the refinement process of crude anthracene by using emulsion-crystallization were reported.
采用乳化结晶法,研究了粗蒽精制过程中溶剂、温度、助剂及分离时间的作用。
a method for preparing anthraquinone from crude anthracene liquid oxide.