查询词典 ionic bond

Synthesis of N-substituted carbametes catalyzed by ionic liquids Ionic liquids were introduced into the syntheses of N-substituted carbamates from alkyl carbamates and amines.

离子液体为催化剂合成N-取代氨基甲酸酯将离子液体引入到小分子氨基甲酸烷基酯和有机胺合成N-取代氨基甲酸酯反应。

The observed EMF values of oxygen concentration cell coincided withtheoretical values perfectly, indicating that the ceramics were purely oxide-ionicconductors with oxygen ion transference number of 1 under oxygen atmosphere over thewhole temperature range. The electrochemical oxygen permeation rates determined were inaccordance with the theoretical rates calculated from Faradays law, verifying directexperimentally that the oxide-ionic nature of the conduction under oxygen atmosphere. Athigh oxygen partialpressure range pO_2=10~(-5～10~5 Pa, they were almost pure ionicconductors, which was consistent with the result by means of oxygen concentration cell.Whereas at low oxygen partial pressure range pO_2=10~(-5～10~(-15)Pa, the samplesexhibited mixed ionic and electronic conduction.

结果表明，氧浓差电池电动势的实测值与理论值吻合得很好，氧离子迁移数为1，表明该系列样品在该温度下氧气气氛中为纯氧离子导体；氧泵实验结果进一步证实了该系列样品在氧气气氛中为纯氧离子导体；在氧分压pO_2=10~(-5)～10~5 Pa的高氧分压气氛中，电导率与氧分压变化基本无关，表明在该氧分压范围样品为纯离子导体，这与氧浓差电池电动势测定结果相吻合：在低氧分压为10~(-5)～10~(-15) Pa范围，总电导率随氧分压降低而稍有升高，表明在该氧分压范围样品为氧离子与电子的混合导体。

Ionomers are normally referred to ionic-polymers with non- or low polaritypolymer backbone and low ionic group content of less than 15mo1%.

离聚体是指在非极性或弱极性的主链上带有少量离子基团(通常少于15mo1％)的一类离子聚合物。

And the vast majority of ionic and non-ionic plastic coating compound better.

与绝大多数离子型和非离子型涂层胶复配较好。

Five surfactants were non-ionic, two cationic, four anionic, and one was a mixture of anionic and non-ionic.

五个表面活性剂是非离子的，二 cationic ，四 anionic，和一是一个 anionic 的混合和非离子的。

In the light of different etherificate substituted group ,they are classfied 3 kinds:ionic,non-ionic and mixed ones.

按其醚化取代基电离性能的不同，可分为离子型、非离子型以及混合型三大类。

In our study, the synthesis of spice and the resolution of racemates menthol,(R, 5-4-hydroxy-3-methyl-2-(2-propenyl)-2-cyclopenten-1-one (R, S-HMPC were achieved in ionic liquids by three lipase that are usually used in biocatalysis. Meanwhile, some problems associated with enzyme catalysis in ionic liquids were also addressed.

本论文以三种常用于生物催化的脂肪酶作催化用酶，在&绿色&反应介质—离子液体中实现了香料的合成和手性对映体的拆分，同时也对酶在离子液体中催化所存在的问题进行了一些探讨。

With increasing temperature, the ionic transference number and the ionic conduction region slightly increase.

随着温度的升高，其氧离子迁移数和离子导电区域都轻微增大。

Ionic liquid is a salt melting at about room temperature, which consists of organic cation and inorganic or organic anion. Four methods for synthesizing ionic liquid are reviewed.

室温离子液体是由有机阳离子和无机或有机阴离子构成的、在室温或室温附近温度下呈液体状态的盐类。

In this work, the ionic liquids was used as the microwave absorption medium and an ionic liquid-non polar solvent microwave extraction method was developed. The proposed method was applied to the extraction of the chemical constituents from the root of Panax ginseng C.M.

以离子液体作为微波吸收介质建立了离子液体-非极性溶剂微波提取法，对人参中的化学成分进行了提取，并将该法与固体微波吸收介质-非极性溶剂微波提取法、极性溶剂微波提取法以及混合溶剂微波提取法进行了对比。

The changes of the HAF after liver injury may be related to the volume of blood loss, the intraabdominal pressure and the pneumoperitoneum duration.

肝撞击伤伴失血后肝动脉血流量的变化与失血量、气腹压力以及气腹持续时间等有密切联系。

Reneging on our commitments to the world's poor cannot be an austerity measure, she said.

放弃我们给世界上的穷国的承诺不能成为一种紧缩措施。