查询词典 acid reaction

By analyzing and researching the corrosion resistant mechanism of adsorption typal acidification corrosion inhibitor, taking single equational experimental method, making use of mannich reaction and using the hydrochloric acid as catalyst and the ethyl alcohol absolute as solvent, the new acidification corrosion inhibitor HZ-1 is synthesed by formaldehyde、hypnone、aromatic amines in the present research of this thesis.

本文通过对吸附型酸液缓蚀剂缓蚀机理的分析和研究，利用单因素实验方法，采用曼尼希反应，以盐酸为催化剂，无水乙醇为溶剂，用甲醛、苯乙酮、芳香多胺合成了新型酸化缓蚀剂HZ-1。

In the synthesis of canthaxanthin by selective catalylitic oxidating of βcarotene,CO2 was used as acidifying or alkalizing agent,which controlled reacting system acidity and protected polyene.,producing less by-products and increasing catalylitic oxidation selectivity.In the addition reaction of isoprene with hypochloric acid,1-chloro-2-methyl-3-buten-2-ol and l-chloro-2-methyl-3-buten-4-ol were made by controlling of the acidity with carbon dioxide i...

CO2作为酸碱调节剂和惰性气体，在β-胡萝卜素催化氧化合成角黄素反应中，可以控制反应体系酸性，保护原料中的双键，减少副反应发生，提高催化氧化反应的选择性；异戊二烯氯醇化生成1-氯-2-甲基-3-丁烯-2-醇和1-氯-2-甲基-3-丁唏-4-醇反应中，CO2代替有机酸作酸碱调节剂，控制次氯酸的生成速度，达到调控反应的目的，反应条件温和，不副产固体。

Theoretical studies on various geometrical structures of Hypophosphorous acid were carried out using DFT theoretical methods,at the B3LYP/6—311++G** level.Intramolecular proton transfer isomerization has also been studied using the intrinsic reaction coordinate.

采用量子化学密度泛函B3LYP方法，在6—311++G**基组水平上全优化得到了硫代次磷酸的硫酮式和硫醇式两种构型异构体以及相应的对映异构体，同时对分子内质子转移异构化反应微观机理进行了理论分析。

Theoretical studies on various geometrical structures of Hypophosphorous acid were carried out using DFT theoretical methods, at the B3LYP/6-311 ++ G(superscript **) level. Intramolecular proton transfer isomerization has also been studied using the intrinsic reaction coordinate.

采用量子化学密度泛函B3LYP方法，在6-311++G基组水平上全优化得到了硫代次磷酸的硫酮式和硫醇式两种构型异构体以及相应的对映异构体，同时对分子内质子转移异构化反应微观机理进行了理论分析。

Keywords hypophosphorous acid;thiol isomer thione isomers;enantiomer;proton transfer;isomerization reaction

单硫代次膦酸；硫酮式异构体；硫醇式异构体；对映异构体；质子转移异构化

In part Ⅱ, electrophilic substitution reaction of indoles with aldehydes, ketones and 6-Nitro-vinyl catalyzed by dodecylbenzencsulfonic acid in water were studied in detailed.

本文第二部分详细研究了十二烷基苯磺酸水相催化吲哚与醛、酮和硝基烯的反应。

A hybridized material consisting of polyacrylic acid and kaolin is found to have high water absorbent performance.This polymer/inorganically hybridized material is synthesized by polymerization and cross linking reaction.

在高岭土存在下，以 N，N-亚甲基双丙烯酰胺作交联剂，以过硫酸钾作引发剂，部分中和的丙烯酸单体进行聚合交联反应，合成高聚物/无机杂化高吸水性材料。

The performance of this catalyst for the cross-coupling reaction of iodobenzene with acrylic acid was studied.

研究了该催化剂对碘代苯与丙烯酸交叉偶联生成反式－肉桂酸的催化性能。

Moreover, high TONs (turnover numbers, TONs up to 1 000 000 for the reaction of iodobenzene with phenylboronic acid) for the palladium-catalyzed Suzuki-Miyaura cross-couplings were observed

同时，这种催化体系还可以达到很高的催化效率(碘苯和苯硼酸的催化效率甚至可以达到1000000)。

This paper optimized the reaction condition for alcohol-halogen acid method and dimethyl sulfate method based on reviewed the main means which iodomethane can be synthesized.

在综述碘甲烷常用制备方法的基础上，对醇氢卤酸法及硫酸二甲酯法进行了条件优化及对比总结。

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。