Syntheses of cinnamic esters catalyzed by solid acids such as sulphate and ion-exchanged resin were surveyed.
比较以硫酸盐和阳离子交换树脂分别为催化剂合成肉桂酸酯。
Copper and polymerized ferric sulphate were prepared by using scrap iron coils to react with acid wastewater containing copper ion.
利用废铁卷与含铜酸性废水作用制备金属铜和聚合硫酸铁，并用聚合硫酸铁作絮凝剂处理酯化废水。
Pure enzyme was obtained by using the salt fractionation with ammonium sulphate, the ion-exchange chromatography and the gel filtration.
使用硫酸铵分级盐析，离交色谱，凝胶过滤可获得纯净的酶。
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