甲苯

The main content of the disquisition is studying the Simulation of fractionation process and application in the whole process of the nitrotoluene producting, using the technology of process simulation.

本课题研究的主要内容是运用流程模拟技术进行硝基甲苯生产中硝基甲苯分馏过程的全流程模拟及应用。

The principal development of the study on chemical conversion of nitrogroup derivatives for the toluene was summarized at first based on this review,Described herewith are reaction mechanisms and effects substituents and concluded four methods about sclcctive oxidation of nitrotoluene.

文摘：在这篇文章中，首先综述了甲苯硝基衍生物研究的进展，根据这一评论详细地说明了化学转化机理和取代基效应，并对硝基甲苯的选择性氧化进行了简单评述。

It is found that NaOH exhibited significant cocatalytic action on the oxidation of o and p nitrotoluenes and had no cocatalytic action on the oxidation of m nitrotoluene, and the cocatalytic action of alkali NaOH increased as the concentrations of NaOH increased.

发现NaOH对氧气氧化邻、对硝基甲苯有明显的助催化作用，且碱的助催化作用随着NaOH浓度的增加而增加；而对氧气氧化间硝基甲苯则没有助催化作用。

The molecular structure and the electrostatic potentials at the midpoints of C-NO2 bonds and C-CH 3 bonds for seven nitrotoluene explosives were calculated by ab initio method.

利用HONDO程序包，采用从头计算法对硝基甲苯类炸药的分子结构及其C-NO2键中点的静电势进行了计算，讨论了硝基甲苯类炸药C-NO2键中点的静电势最大值Vmidmax与其实验撞击感度之间的关系。

The paper introduced three processes to prepare isochroman from β-phenethyl alcohol and polyformaldehyde:HCl catalysis,AlCl_3 catalysis and toluene-p-sulfonic acid catalysis,and discussed its reaction mechanism,using toluene-p-sulfonic acid catalysis method to prepare isochroman ,the yield is 46%,purity is 96%.

用β-苯乙醇和多聚甲醛为原料，进行了HC l催化法，三氯化铝催化法和对甲苯磺酸催化法的合成路线的实验，并对其反应机理进行了探讨，应用对甲苯磺酸催化法合成异色满的合成路线，得率46%，纯度96%。

Through analyzing the mechanism of the photochlorination of m-chloromethyl benzene in the side chain, the kinetic models of the consecutive reaction were built.

通过对间氯甲苯侧链光氯化反应机理的分析，建立了间氯甲苯光氯化连串反应动力学模型。

Taking o-cholorotoluene as raw material,the factors influencing the photochlorination synthesis of the o-chlorobenzyl chloride were investigated.

研究了邻氯甲苯光氯化生成邻氯氯苄的各项影响因素，在适宜条件下，邻氯甲苯的转化率可达75%以上，反应过程邻氯氯苄的收率可达90%。

The researching content was as follows: 1. When AlClx/HY zeolite be used as catalyst, the effects of the ratio of 2-methylnaphthalene to tetramethyl benzene, catalyst concentration, reaction temperature and reaction time on the conversion (based on 2-methylnaphthalene), yield and selectivity (both based on 2,6-DMN) were discussed. In addition, by orthogonal experiment, the optimum reaction conditions were determined at the same time. The optimum reaction conditions : the molar ratio of 2-methylnaphthalene and tetramethyl benzene =1:1, reaction temperature was 400℃.

具体研究如下： 1、以AlClx/HY型分子筛为催化剂，研究原料配比(2-甲基萘与均四甲苯的摩尔比)、反应温度和反应时间对2-甲基萘的转化率、目的产物2，6-DMN的收率和选择性的影响，并通过正交实验确定了该催化剂体系下的最佳反应条件为：原料的摩尔比为(2-甲基萘：均四甲苯)=1：1，反应质量空速为6h-1，反应温度为400℃。

The range of bacteria that could be effectively detected corresponded to about 10^4 to 5×10^5 cells/mL. Results obtained, using a medium with toluic acid as the sole carbon source, indicated that in soil either with, or without, the addition of toluene, P. putida D8 could not be recovered, 288 and 72 hours after inoculation, using classical growth-dependent culture techniques.

根据传统之平板培养法，利用toluic acid为唯一碳源之选择培养基，侦测Pseudomonas putida D8在土壤中之消长情形，结果显示在有添加甲苯之状况下到188小时后方才无法测得目标菌株；反之，在没有添加甲苯的情况下，48小时后便已无法测得。

A series of modified polyurethane elastomer materials with different amino siloxane content were synthesized,which were based on polyoxypropylene glycol,aminoethyl aminopropyl poly,toluene diisocyanate and the curing agent dimethylsulfide toluylenediamine.

以聚氧化丙烯二醇或聚氧化丙烯三醇、氨乙基氨丙基聚二甲基硅氧烷、甲苯二异氰酸酯为原料在无溶剂条件下制备预聚体，利用二甲基硫甲苯二胺为固化剂合成一系列氨基硅油改性聚氨酯弹性体材料，并对材料的力学性能、耐热性、表面水接触角等性能进行了测试。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。