乙酸的

The yields of peracetic acid is studied from two different preparation methods using hydrogen peroxide and acetic acid or acetic anhydride .

比较了用乙酸和乙酸酐分别与过氧化氢反应制备所得的过氧乙酸的浓度。

The results show, there are many methods for Chloroacetic acid production, but only the Catalytic Chlorination of acetic acid is extensively applied.

结果表明，氯乙酸的生产方法很多，但只有乙酸催化氯化法实现了广泛应用。

The productions of glycin oxidation are complicated and the cost is high. The cyanogenesis is poisonous and unsafe.

国内外合成羟基乙酸的方法主要有甘氨酸氧化法、氰化法、醛类羧化法、甲醛和甲酸甲酯偶联法、草酸电解法、氯乙酸水解法等。

The mechanism for chlorinate acetic acid to monochloroacetic acid by using acetic anhydride or sulfur as catalysts respectively was studied.

通过对硫磺和乙酐催化氯化制备氯乙酸反应机理的分析研究，采用硫磺及乙酐复合催化剂，并且对氯化温度、氯化气氛、尾气回收等进行了过程优化，实现了乙酸氯化反应工艺条件的重大突破，使得氯乙酸的收率达到92.1%。

Kinetics of photo-chlorination of acetic acid to form monochloroacetic acid ;2. The mechanism for chlorinate acetic acid to monochloroacetic acid by using acetic anhydride or sulfur as catalysts respectively was studied.

通过对硫磺和乙酐催化氯化制备氯乙酸反应机理的分析研究，采用硫磺及乙酐复合催化剂，并且对氯化温度、氯化气氛、尾气回收等进行了过程优化，实现了乙酸氯化反应工艺条件的重大突破，使得氯乙酸的收率达到92。

As concerning synthesis of 2-ethylhexyl chloroacetate, effects of catalyst dosage, molar ratio of 2-ethylhexanol to chloroacetic acid, reaction time, dosage of water entrainer on esterification rate were studied.

将此固体超强酸酯用于氯乙酸和异辛醇合成氯乙酸异辛酯的酯化反应，考察了异辛醇和氯乙酸的摩尔比、催化剂用量、反应时间、带水剂环己烷的用量对酯化反应的影响。

The article introduced that α-Naphthaleneacitic acid was synthesized from naphthalene and chloroacetic acid in presence of aluminium powder.

介绍了萘和氯乙酸在铝粉催化下合成α—萘乙酸的研究。

DCA, or dichloroacetic acid, is an analogue of acetic acid in which chlorine atoms replace two of the three hydrogen atoms on the methyl group.

DCA也叫二氯乙酸或二氯醋酸，是一种类似乙酸的化合物，但乙基团上有两个氢原子被氯原子所取代。

The influence of reflux rate at the top of tower, light density, ratio of feed and discharge, content of water and ferrous iron in the raw materials were investigated. The output of column was also inspected.

大量二氯乙酸的生成不仅增加了原料消耗，提高了成本，而且由于后续分离困难，使氯乙酸产品质量较低，加之二氯乙酸的用途很少，造成资金和设备的巨大浪费。

Mascagni were held into a solution containing calcium, ethylene glycol bis-amino tetmacetate and water, respectively. The effects of calcium were studied by measuring the ornamental quality of cut flowers and the physiological characteristics such as calmodulin, abscisic acid, gibberellins, zeatin, endogenous calcium, malondialdehyde and soluble sugar in florets.

以唐菖蒲红色品种'马加烈'切花为材料，瓶插在含有乙酸钙或钙离子专一性螯合剂乙二醇二乙醚二胺四乙酸的溶液中，分析乙酸钙对切花观赏品质的影响以及第1和第3朵小花内钙调素、脱落酸、赤霉素、玉米素、Ca(上标 2+)、丙二醛和可溶性糖含量的变化。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。