反应选择性

优化结果表明，反应选择性可提高2%以上。

The optimization results indicated that the reaction selectivity increased by over 2 % .

搅拌槽内加料方式对反应选择性影响的研究

Study on the Influence of Feed Methods on the Reaction Selectivity in Stirred Tank

温度对脂肪酸甲醋的臭氧化反应选择性（K）有影响。

Temperature also has great influence to the reaction .

羟基化合物对Fenton反应选择性的影响研究

Effect of compounds with hydroxyl on Fenton reagent selection

水和氧在电解银表面上存在着竞争吸附，水的加入能抑制甲醇氧化为甲醛的副产物CO2的产生，提高反应选择性。

It has also been found that there exists competitive adsorption between water and oxygen on silver and water can increase the selectivity of methanol oxidation to formaldehyde .

利用β-环糊精对底物的包络作用，经由Fries重排反应选择性合成了邻羟基苯乙酮。

Using the inclusion action of β - Cyclodextrin with phenyl acetate , 2-Hydroxy-acetophenone was Synthesized via Fries rearrangement reaction .

结果与结论3种方法中，采用氢溴酸作催化剂的反应选择性最高，收率达到95.67%，产物结构经1H-NMR和EI-MS确证。

The optimal catalyst was HBr with a highest selectivity and yield of 95.67 % . The structure of emodin synthesized was characterized by 1H-NMR and EI-MS.

在水介质中，以Pd/C为催化剂，考察了不同种类助催化剂对催化加氢法制备4,4′-二氨基二苯乙烯-2,2′-二磺酸（DSD酸）反应选择性的影响。

The effect of a series of catalyst promoters on selectivity in preparation of 4,4 ' - diaminostilbene-2,2 ' - disulfonic acid ( DSD acid ) was studied by catalytic hydrogenation using palladium-carbon as the catalyst in aqueous medium .

研究表明，Fukui函数不是决定反应选择性的唯一因素，而局域意义的软硬酸碱原理可用来理解此类反应性。

According to our study , the Fukui function is not the only factor to determine the selectivity of a chemical reaction , while the principle of hard and soft acid and base in a local sense can be used to understand this kind of reactivity .

反相微乳液中苯酚硝化反应选择性的研究

Study of the selectivity of phenol nitration reaction in reverse microemulsion

特戊酰氯在全回流填料塔内一氯化反应选择性的研究

Selectivity of Monochlorination of Pivaloyl Chloride Utilizing Total Reflux Packed Column

内扩散对连续反应选择性影响的计算机模拟

Inner Diffusion on Selectivity of Consecutive Reaction by Computer Simulation

提高复合反应选择性的措施

The methods to improve the selectivity of complex reaction

萃取剂伴生，环己烯反应选择性高。

Co-production of extractant in reaction resulted in high selectivity of cyclohexene reaction .

该反应选择性高，操作简便。

This reaction was easily manipulated and high regioselective .

电环化反应选择性规律的一种新解释&轨道转化-电子填充法

A new method for the explaining of electrocyclic reaction Orbital conversion electron filling

有机合成反应选择性及其控制策略

Selectivity and Their Controlled Strategies in the Organic Synthesis

烷烃卤代反应选择性的讨论

Discussion of the Selectivity of Alkane Halogenation Reaction

溶剂对有机反应选择性影响

Effect of Slovents on Selectivity to Organic Reaction

该显色反应选择性好。

This reaction has good selectivity .

得出了反应选择性预测模型。经优化计算，按给出的操作参数优化值改善操作工况，收到了显著的经济效益。

Through optimization calculation , operation of the reactor was improved and good economic result achieved .

本工作旨在研究铁、钯等过渡金属催化的反应选择性控制。

This thesis focuses on the selective control of iron , palladium and other transition metal-catalyzed reactions .

利用计算机编程绘制出内扩散对连续反应选择性的影响图。

Using computer programme , the effect element figure of inner diffusion on selectivity of consecutive reaction is drawn .

烯酸络合物碳阳离子的前沿轨道系数愈大，反应选择性愈高。本文还初步讨论了环取代反应和醚生成反应之间的相互关系。

The larger the molecular orbital coefficent of the acid-olefine complex is , the higher the selectivity of the reaction will be .

本文分析了活性具有δ&函数分布的多孔球形催化剂对多组分平行竞争反应选择性的影响。

The influences of spherical catalyst pellets with δ - function activity profiles on the selectivity of multi-component parallel reactions were studied .

但随温度的进一步增大，水蒸气的反应选择性减弱，不利于焦油的产生。

However , with further increasing of temperature , the reaction selectivity of steam was abated , which prejudiced the production of tar .

结果表明，在转化率为80%以前有良好的反应选择性，副反应可忽略不计。

As the conversion is below 80 % , the selectivity shown is good , and any negligible side reactions present may not be considered .

这种方法简单，反应选择性好，副产物少，因此易于分离提纯，并且普遍适用于不同金属、取代基相似的酞菁。

The method has good selectivity with fewer by-products and was easy to be purified . The method was suitable for different phthalocyanines with similar structure and various metals .

近年来，出现了一些提高复合反应选择性的新方法，如：超临界反应、膜反应、反应精馏等。

Recently , some new methods , such as supercritical chemical reaction , membrane reaction , and reactive distillation , have been applied to improve the selectivity of complex reaction .

乙醇与β-环糊精的协同作用，使1,4-二羟基蒽醌-Be体系荧光强度提高10倍以上，反应选择性有所改善。

The concurrent action of alcohol and β - cyclodextrin enhances the fluorescence intensity of 1 , 4-dihydroxyanthraquinone-beryllium system by a factor of more than ten and improves the selectivity of the reaction remarkably .