查询词典 acid reaction

It is proposed that the sturdiness of silicic acid congealed gel is a key factor to make the reaction of producing"Lead Trees" successful.

文摘：提出了生成&铅树&反应成功的关键是硅酸凝胶的坚固性，找到了较好的硅酸凝胶的制备条件，使该氧化还原平衡移动的反应成功率提高了90％以上。

Using silicotungstic acid as catalyst with the catalyst supported on active carbon,2-methyl-2-ethyl-acetic-1,3-oxathiolane(targeted compound I,an aroma compound with apple flavor )was synthesized by the reaction of ethyl aceto-acetate and 2-mercapto-ethanol.

以活性炭固载硅钨酸作为催化剂，用乙酰乙酸乙酯与巯基乙醇缩和合成了具有浓郁苹果香气的香料化合物2-甲基-2-乙酸乙酯基-1，3-氧硫杂环戊烷。

Moreover, nano-scale SiO〓 particle is as seed, styrene-acrylate-acrylic acid emulsion polymerization and soapless acrylic emulsion are studied from varying the level of SiO〓 particle and reaction temperature, particle size of these emulsions are determined and SiO〓 content of participating polymerization is also determined. Kinetic study is carried out in the presence of nano-scale SiO〓 particle.

此外用原位聚合法制备了纳米SiO〓/苯乙烯-丙烯酸酯复合乳液和无皂丙烯酸乳液，研究了不同SiO〓含量、反应温度等对聚合反应稳定性的影响，测定了所得乳胶粒的粒径，分析了在乳液中SiO〓含量，并进行了在SiO〓存在下乳液聚合反应的动力学研究。

Based on the above reaction principle, a novel method, chromotropic acid spectrophotography, was established to determine methanol content during fermentation of Pichia Pastoris.

利用该反应原理建立毕赤酵母发酵过程中检测甲醇含量的变色酸分光光度法。

The preparation process of stannous octanoate (stannous 2-ethylhex-anoate)which is manufactured by reaction of anhydrous stannous oxide with 2-ethylhexanoic acid has been researched in this paper.

本文对氧化亚锡与异辛酸反应制备辛酸亚锡（2－乙基已酸亚锡）的工艺进行了研究。

The composite amino acids of pupa protein was prepared by the method of enzymatic-acid hydrolysis. N-stearyl composite amino acids is synthesized by the synthesis reaction of stearyl chloride reacting with composite amino acids.

以蚕蛹为原料，采用酶－酸两步水解法制备混合氨基酸液，再与硬脂酰氯反应合成N-硬脂酰基复合氨基酸表面活性剂。

So, there is an especial significance in the case of energy sources shortage and huge energy consumption nowadays. Based on reaction mechanism of alkanolamines with acid gases in this work, selective absorption of H_2S from mixed-gas streams into the aqueous solution of blended amines of MDEA-TBEE has been studied using a static and a dynamic evaluation setup, respectively. TBEE, a severe sterically hindered amine, was added into MDEA to form the blended amines.

开发高效活化剂是酸性气体吸收领域重要的研究方向之一，研究工作采用一乙醇胺为原料，氢气为反应氛围，低压下有机气相通过管式催化反应器合成活化剂哌嗪，考察合成催化剂组成和操作参数对合成反应的影响；将合成产物应用于膜吸收装置和再生装置上考察其吸收和解吸CO_2的性能。

In this work, density functional theory has been performed to study the microcosmic reaction mechanism of succinic acid dehydration.

用量子化学密度泛函理论对该反应的微观机理进行了详细研究，得到了该反应的微观过程。

Digestion conditions, working conditions of atomic fluorescence spectrometer and conditions of hydride generation reaction were studied. Methods for the reduction from Se to Se by using boiling water bath and UV were compared. The amount of sulfamic acid for the elimination of the interference of nitrogen oxides was also investigated.

探讨了消解条件、原子荧光光度计工作条件及氢化物发生反应条件，对比沸水浴加热和紫外光加热2种将Se还原为Se的方法，研究氨基磺酸消除氮氧化物干扰的最佳条件。

Some typical newly catalysts, such as sulfoacid, inorganics, solid superacids, etc on the reaction of p-hydroxybenzoic esters was summed up especially introduce heteropoly acid catalyst.

总结了磺酸、无机物、固体超强酸等几种典型的合成对羟基苯甲酸酯反应的新型催化剂，重点介绍了杂多酸催化合成对羟基苯甲酸酯。

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。