Cyclohexene was synthesized by dehydration of cyclohexanol using zirconium sulfate or potassium hydro - gen sulfate as catalyst instead of concentrated sulfuric acid.
用硫酸锆、硫酸氢钾分别代替浓硫酸，催化环己醇脱水合成了环己烯，主要考察了催化剂用量、分馏反应时间对产物收率的影响。
Aluminium borate melting block was prepared by the combination of boric acid, anhydrous alum and potassium sulfate.
采用硼酸和无水明矾及硫酸钾压块、焙烧、制备硼酸铝熔块。
Coupled flocculation and oxidation process was used to treat acid brilliant scarlet dye wastewater with Potassium permanganate as oxidant and poly-silicic-ferric sulfate as flocculant.
以高锰酸钾为氧化剂、自制的聚硅硫酸铁为絮凝剂，采用氧化-絮凝耦合工艺处理酸性大红废水。
The article discussed the method that waste acid in producting titanium dioxide prepared potassium sulfate. fer-rite carbonate and compound fertilizer.
本文论述了利用钛白生产中的废酸制取硫酸钾、碳酸亚铁及复混肥的方法。
The reaction conditions of 2-ethoxybenzoic acid were optimized by changing the amount of diethyl sulfate, reaction time of methyl salicylate and potassium hydroxide, the amount of sodium hydroxide.
通过改变硫酸二乙酯的用量、水杨酸甲酯与氢氧化钾的反应时间、氢氧化钠的用量，得到了2-乙氧基苯甲酸的优化制备工艺条件。
The reaction conditions of 2-ethoxybenzoic acid were optimized by changing the amount of diethyl sulfate, reaction time of methyl salicylate and potassium hydroxide, the amount of sodium hydroxide.
通过改变硫酸二乙酯的用量、水杨酸甲酯与氢氧化钾的反应时间、氢氧化钠的用量，得到了2-乙氧基苯甲酸的优化制备工艺条件。
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