a carboxylic acid used in the manufacture of nylon

The effect of material ratio, catalyst amount, reaction temperature and time on the yield of adipic acid is studied.

探讨了物料配比、催化剂用量、反应温度、反应时间对己二酸产率的影响。

WO3 catalyst can be reused for 4 times and the isolated yield of adipic acid is still above 70%.

三氧化钨催化剂重复使用4次，己二酸的分离产率仍可达到70%以上。

At these conditions, the reclaiming yield of adipic acid is 100%, and the purity can be more than 99% by recrystallization.

在此条件下酸洗水中的己二酸回收率可达100%，经过二次结晶后己二酸的纯度超过99%。

Synthesis of unsaturated polyester resin with different mole ratio of adipic acid to diethylene glycol and effects of toughening were studied.

用不同摩尔比的己二酸，一缩二乙二醇合成不饱和聚酯树脂，并对增韧效果进行研究。

The fluidized bed with immerged tube has been applied in adipic acid dryer device, which provides a new thought for the reformation of dryer in PTA device.

埋管流化床在己二酸干燥装置上的应用，为PTA装置中干燥机的改进提供了一个新的思路。

The results show that the combination of adipic acid and acetonitrile is the best catalyst.

结果表明：以己二酸和乙腈组合为催化剂的催化效果最好。

The FTIR result verified that the hydroxyl groups on the surface of the resulting nano-SiO2 form hydrogen bondings with adipic acid generated by hydrolysis of dimethyl adipate during reaction.

红外光谱表明二氧化硅表面硅羟基与己二酸二甲酯酯化产物己二酸的羧基形成氢键。

Feasibility and advantages of separating impurities of the rude adipic acid from bi unit with a membrane separation technology are made.

利用膜分离技术将BI装置的产品粗己二酸中的杂质分离出来，得到精己二酸溶液的可行性及优点。

The dibutyl adi-pate was synthesized from adipic acid and n-butyl alcohol in the presence of amino sulfonic acid.

在氨基磺酸存在下，由己二酸和正丁醇合成己二酸二丁酯。

The various technologies of adipic acid producing and the treatment of wastewater and effluent gas produced are introduced.

本文详细介绍了己二酸的各种生产路线和工艺以及生产过程中产生的废水、废气等的处理方法。

In most cases, the yield of target product adipic acid is high if the acidity of ligand is strong.

在大多数情况下，配体的酸性越强，目标产物己二酸的产率越高。

According to the experimental results adipic acid plus sodium chloride appear to be one of the most promising additives among the numerous inorganic and organic compound additives.

结合本文作者的开发研究，认为在众多无机和有机添加剂中，己二酸和氯化钠的组合是一种具有开发前景的复合型添加剂。

Thus, there was a 50% conversion of cyclohexane to adipic acid in a single step oxidation, which represented the best result from this present study.

因此，有50 %的转换环己烷合成己二酸在一个单一的步骤氧化，这是最好的结果从本研究。

The tendency of preparing adipic acid and hexamethylene diamine from non-benzene materials is also introduced.

此外，还介绍了以非苯原料制备己二酸、己二胺的开发情况和市场动向。