查询词典 ionic structure

The synthesis of high purity azelaic acid through oxidation of oleic acid with 50% hydrogen peroxide was studied by using tungstic acid as a catalyst and ionic liquid as a basic reaction system .

以油酸为原料，50%的H2O2为氧化剂，在离子液体作为主要溶剂的条件下，采用钨酸为催化剂所得中间产物用自制的过氧乙酸继续氧化裂解合成了高纯度壬二酸。

The Knoevenagel condensation reactions between aromatic and α,β-unsaturated aromatic aldehydes with barbituric acid can effectively be performed in ionic liquid without additional acid or base catalyst, it is a simple efficient method for the synthesis of benzylidene barbituric acids, which have been widely used in pharmaceutical chemistry as well as in organic synthesis.

芳醛、α，β-不饱和芳醛和巴比妥酸间的Knoevenagel缩合反应能在离子液体中没有酸碱催化剂的条件下顺利进行，是合成在药物化学和有机合成中有广泛用途的苯亚甲基巴比妥酸类化合物的简单有效的方法。

The ionic liquid [C_(12H_(25)_2-bim]Br was used as catalyst in the reaction of synthesizing the derivatives of benzil from aromatic aldehydes, which showed better catalytic effect, mild reaction conditions and higher yield.

利用合成的离子液体[C_(12H_(25)_2-bim]Br做催化剂，催化由芳醛合成偶酰的反应，催化效果较好，反应条件温和，产率较高。

In this paper,water-soluble ionic liquid BeS was used as extractant for sulfur compounds thiophene,2-methyl thiophene,benzothiophene,dibenzothiophene in simulated fuel and the feasible operation conditions were confirmed by extraction experiments.

选择水溶性的离子液体BeS作萃取剂，对模拟油品中的4种含硫有机物噻吩、2-甲基噻吩、苯并噻吩、二苯并噻吩进行了萃取，确定了适宜的萃取操作条件。

Five kinds of ionic liquid, AlCl4, TBP, BeS, PF6, and BF4, were synthesized and used to extract Benzothiophene and Dibenzothiophene in model fuels.

本文合成了五种新型离子液体AlCl4， TBP， BeS， PF6， BF4，并将他们用于油品脱硫的模拟体系。

The bimolecular electron transfer rate constants demonstrate a marked dependence on ionic strength. This indicates that the electrostatic interaction plays significant role in the electron transfer.

电子传递速率常数的对数与离子强度符合指数关系，表明静电作用在电子传递过程中起着较重要的作用。

It was found that these ionic liquids possess the thermoregulated function of"mono-phase under low temperature, biphase under high temperature".

测定了不同乙氧基链长的上述离子液体在有机溶剂中的溶剂性能，找到了具有&室温均相，高温分相&的温控离子液体/有机溶剂液液双相体系。

We studied the effect of water on the palladium acetate-catalyzed coupling reaction of aryl boronic acid with aryl bromide or acyl chloride in ionic liquid or PEG, and found that water had a remarkable rate accelerating effect on the Suzuki reaction and Suzuki-Type reaction when other reaction conditions were uniform.

研究了水对离子液体或聚乙二醇中Pd2催化的卤代苯或苯甲酰氯与苯硼酸的Suzuki和Suzuki-Type偶联反应收率的影响。

In part three oxidation of bromide with an ion-supportedbenzene in ionic liquids afforded a clean path for bromination of alkenes. It was found that this reaction is highly stereoselective.

在离子液体中使用离子支持的二乙酸碘苯氧化溴离子，提供了一条清洁的烯烃加溴途径，发现反应具有高的立体选择性。4。

Taguchi method was used to design experiments to evaluate effects of concentration of butylamine, pH, ionic strength and temperature on immobilization behavior.

利用正交实验设计的方法系统地考察了预撑剂正丁胺的量、pH值、离子强度以及温度等各因素对固定化血红蛋白酶活性的影响。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样