查询词典 acid reaction

The process of Acid Red 2GL is mainly introduced in this paper,and the conditions of both diazo- couple reaction and complexation reactions are also discussed.

本文主要论述了中性红2GL染料的合成工艺路线，并对重氮偶合反应和络合反应条件进行了讨论。

A series of alkyl diphenyl ether were synthesized with low cost raw materials,diphenyl ether and aliphatic alcohol,catalyzed by concentrated sulfuric acid,and followed by sulfonation to produce MADS.On the basis of analysis and characterization,structure of the products was identified,effect factors of the preparation reactions were investigated and the optimum reaction conditions were obtained.2.The surface chemical properties of C_8,C_9,C_(10)-MADS were determined.

通过对产物的表征分析，对其结构进行了鉴定，并对合成反应的影响因素进行了分析讨论，优化了合成条件。2、测定了所合成的系列烷基二苯醚双磺酸钠C_8-MADS，C_9-MADS，C_(16-MADS的表面化学性能，结果表明：合成样品在质量分数高达10%的无机酸、无机碱及无机盐溶液中表面化学性能稳定，同时显示出优良的乳化性能和在硬水条件下较好的去污洗涤性能。3。

De-ionized double-distilled water and sul- furic acid were then added to the reaction mixture and it was allowed to attain the requisite temperature.

De-ionized double-distilled水和sul -再加上furic酸反应混合物它被允许获得所需的温度。

De-ionized double-distilled water and sul- furic acid were then added to the reaction mixture and it was allowed to attain the requisite temperature.

从-使两倍-蒸馏水和sul- furic酸形成离子是被加入反作用混合物那时和它获准达到必须温度。

A plausible process of this reaction is as following: Aldehyde was in equilibrium with the enol form, aldehyde reacted with aniline catalyzed by 2,2,2-trichloroacetic acid to afford imine, the generated imine immediately reacted with enol to form intermediate via intramolecular cyclization.

我们发现一分子芳基叠氮和一分子三苯基磷反应生成一分子磷亚胺，后者与由两分子取代的苯氧乙酰氯原位生成的烯酮反应生成4-亚烷基-β-烷基-内酰胺，其串联过程涉及烯酮亚胺的形成及其与烯酮的[2+2]的环加成反应。

Starch acetates with different degrees of substitution were synthesized by reaction of corn starch and acetic acid/acetic anhydride catalyzed with concentrated.

以浓硫酸作催化剂，玉米淀粉为原料，冰醋酸和醋酸配为改性剂，合成了不同取代度的玉米淀粉醋酸酯。

Little literature on the aspect of surfactants containing boron with long-carbon chain alkyls had been found.Using diethanolamine, boric acid, hexadecanol as starting materials, after a series of reaction such as vapour phase process bromizating, esterifying, alkylating, a new type of surfactants with boron RNB had been obtained. The structures of the compounds had been identified by elemental analysis, IR and HNMR.

本论文采用二乙醇胺、硼酸、十六醇等为主要原料，经气相法溴化、酯化、烷基化等一系列反应合成了一种新型含硼表面活性剂RNB，并通过元素分析、红外、核磁对其结构进行了确认。

Compared with original process, the problems of the reaction of mixed acid anhydrides and hydrolyzation were solved. The improved process has high yield, low cost and is easy to operate, while the quality of products is much more stable and suitable for industrial production.

改进后的工艺新解决了原工艺酸酐反应不完全及水解等问题，操作简单、产品质量稳定、收率高、成本低、更适合工业化生产。

Esterification with some inorganic acid chlorides and anhydrides has been studied too, but with limited success only due to rather violent side reactions and an early precipitation of the reaction products.

同时也做过用无机盐酸及酸酐酯化的研究，但是只取得了有限的成功，只是因为相对剧烈的副反应及反应产物过早的沉淀。toommy：感谢参与，继续努力！亚太币+ 30 贡献+ 2

Cu-compound amino acid ; Chelae reaction ; Condition of synthesizing

复合氨基酸铜螯合物；螯合反应；合成条件

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。