查询词典 reaction coil

Finally,the factors that can effect the phase transfer catalysis reaction rate are discussed,it can get know more about affect of some factors,such as phase changes, migration rule of surfactant and property change of microinterface to the phase transfer catalysis reaction.

最后，就对相转移催化反应速率影响的诸因素进行详细的讨论，了解乳化液中相态变化、表面活性剂迁移规律、微界面性质变化等因素对相转移催化反应的影响。

In the second part of the paper , oxidation of phenanthrene for the preparation of phenanthrenequinone by using halogen compound was studied . The chief factors of this method was discussed , and the optimum processing condition was obtained . The mechanism of the reaction by potassium hydroxide-precipitated was discussed , and the reaction kinetic parameters was measured .

论文第二部分研究了卤素化合物作为氧化剂氧化菲合成菲醌的方法，探讨了这种氧化方法的主要影响因素，从中找出较佳的工艺条件，并对其反应机理进行了初步探讨，测定了氧化反应的一些动力学参数。

A new synthesizing route for ethyl-2-(p -ethoxyphenyl) propenoate preparation was proposed, in which, the ethyl-2-(p-ethoxyphenyl) propenoate was synthesized from phenetole via Friedel-Crafts reaction and Wittig G reaction.

设计了一条以苯乙醚为起始原料，经过Friedel-Crafts反应、WittigG反应合成2-对乙氧基苯基丙烯酸乙酯的新路线。

The results showed that the yield of phenyl glycidyl ether was 96.8% when the mole rate of sodium phenolate and epichlorohydrin was 1.15:1, the mass ratio of ionic liquid and reactant 2:1, reaction temperature 70℃ and reaction time 2h.

结果表明，在反应温度为70℃，反应时间为2h，反应物苯酚钠与环氧氯丙烷的物质的量比为1.5：1，离子液体与反应物的质量比为2：1时，苯基缩水甘油醚的产率为96.8%。

The major goal for our research is to use simple synthesized method for various fluorescence dye derivatives containing Phenothiazine core via Heck reaction and Suzuki coupling reaction that unprotected at 10N-H.

中文摘要本实验的研究目的为利用简单的合成步骤：在Phenothiazine 的3，7-位置上，藉由Heck reaction和Suzuki coupling reaction直接合成出 10NH没有保护基的萤光染料。

Owing to the abroad application of Candida rugosa lipase in the resolution of racemic aminoacides, the prepared lipase was used in the resolution of phenylglycine and tert-leucine. Through the optimization of the reaction conditions, such as reaction substrate, pH, temperature, ion strength and additives, enantiomeric excesses for phenylglycine and tert-leucine reached 96% and 90.1%, respectively, enantiomeric ratio came up to 28. 9 and 15. 4, respectively.

鉴于该酶广泛应用于手性化合物的拆分研究，本论文中选用了两种手性氨基酸作为拆分对象，通过对反应体系中一系列条件的优化，包括底物、pH、温度、离子强度以及添加物的使用，苯甘氨酸和叔亮氨酸的对映体过量值分别达到96%和90.1%，对映催选择率分别达到28.9和15.4。

With phosphate rock decomposing in the course of reaction, some resultants of reaction will diffuse and separate crystals out.

在磷矿酸解反应过程中，随着矿物的溶解，将出现反应产物的扩散和结晶。

Based on orthogonal test, the factors influencing the synthesis of di-n-propyl phosphite, such as reaction temperature, reaction time and molar ratio of reactant, were investigated.

通过正交优化试验，考察了温度、时间和物料配比对二正丙基亚磷酸酯的合成收率的影响。

In the study of the Heck reaction in the homogeneous system, a phosphonium salt, PPh_4Br, was used as co-catalyst in the pailadacycle catalyst system for the Heck reaction of the aryl chlorides.

另外，也研究了钴络合物催化卤代烷烃的Heck羰基化反应。

The result showed that the optimal condition of inorgano-absorbent manufacture as following: concentration of vitriol is 15%, the bentonite carrier must be soaked in the 0.4% La(superscript 3+) solution, the pH is 10, microwave radiation power is 340 W for 5 min. The optimal condition of organo-absorbent manufacture process as following: concentration of CTMA is 5%. The rate of wave must 166 W and the time of radiation is 6 mi In addition, the experimental results showed that with inorgano-absorbent the pH number is 3~6 and the reaction time is 45 min, the removal efficiency of phosphor will be up to 99% and the amount of adsorption will be up to 41 mg/g. And with organo-absorbent the pH number is 3~4 and the reaction time is 45 min, the removal efficiency of phosphor is more 30% than that of inorgano-absorbent. The removal efficiency of phosphor will be up to 99% and the number of adsorption will be up to 60 mg/g.

实验表明：①制备无机稀土吸附剂的适宜条件为：硫酸浓度15%，镧浓度0.4%，浸渍pH值10，微波功率340 W，辐射时间为5 min；②制备有机稀土吸附剂的适宜条件为：表面活性剂浸泡浓度为5%，微波功率为166 W，微波辐射时间为6 min；③无机稀土吸附剂当溶液的pH值为3~6，振荡时间为45 min时，对磷去除率为99%以上，吸附量达到了41 mg/g以上，有机稀土吸附剂当溶液的pH为3~4，振荡时间为45 min时，其效果比原来镧改性的无机吸附剂吸附量提高了30%，磷去除率为99%以上，吸附量达到了60 mg/g以上。

You have to walk your own alk in this life.

次生中你必须走自己的路。

To start with, the thesis analyses ***ism in terms of the generic masculine words, word order and semantic derogation of women in greater detail.

论文首先从阳性词泛指，词序，词义的贬降等方面对英语中的性别歧视现象进行了详细的分析。