Halogenide anions can associate strongly with coal molecules by acid -base interactions, and destruct the associative structure of coal enhancing the extraction yields of coal in organic solvents.
卤素阴离子能够同煤分子通过酸碱作用而强烈缔合，从而破坏了煤分子的缔合结构，提高了煤在有机溶剂中的抽提率。
Results the alkaloid content was the highest after circumfluence extraction by ethanol acid-base precipitation.
结果采用乙醇回流提取后，利用酸提碱沉法，盐酸药根碱与盐酸巴马汀含量最高。
In this study, base and acid were used for extraction, and the amount and concentration of extraction, temperature and the amount of water as scatter were investigated during the process oft...
本文考察了萃取剂浓度、用量、反应温度、分散用水量等因素对对氯苯甲酸离解萃取过程的影响，得到了最佳的分离工艺条件。
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