查询词典 catalysis

Makesthe chiral in the organic synthesis to analyze the experiment, theanhydrous non- oxygen experiment, the catalysis pressurizes thehydrogenation experiment.

在有机合成中做过手性拆分实验，无水无氧实验，催化加压加氢实验。

Our company mainly styrene, acrylic acid series, acid, base, weak acid, weak base, catalysis, chelation, inert ion exchange resin, the key products used in softened water, desalination water exchange resins; Condensate Polishing resin; food fermentation industry, bleaching, adsorption resin, petroleum, chemical, medical, chelate resin series resin and catalyst as well as supporting a series of packing and other water brands, there are four series, more than 20 varieties of ion exchange resin.

我公司主要有苯乙烯系、丙烯酸系列，强酸、强碱、弱酸、弱碱、催化、螯合、惰性离子交换树脂，目前主要产品应用于软化水、除盐水处理交换树脂；凝结水精处理树脂；食品、发酵行业脱色、吸附专用树脂、石油、化工、医学、鳌合系列树脂和催化剂专用树脂以及配套水处理的系列填料等多种牌号，目前有四大系列、二十余个品种离子交换树脂产品。

According to the results and data reported, it was given that the catalysis activity of iodine in acid and alcohol esterfication is not high.

将实验结果与文献数据综合分析，得出了碘作为催化剂在酸醇直接酯化反应中的催化活性不高。

Under catalysis of AlCl3, trans-1-chloro-3-phenyl-1-propen-3-one was first prepared using benzoyl chloride and acetylene in CH2Cl2 at 20~25℃, which the yield is 7% higher than that in CCl4 at 40~45℃.

通过对其反应条件的研究，首次用苯甲酰氯和乙炔在三氯化铝作用下合成出反－3-苯基－1-氯－1-丙烯－3-酮；并发现用二氯甲烷作介质在20~25℃下的反应产率，比用四氯化碳作介质在40~45℃下的反应产率约高7%。

Benzyl butyrate was prepared by phase transfer catalysis of butyric acid with benzyl chloride in the presence of ben zalkonium bromide as a catalyst.

以丁酸和氯化苄为原料，以新洁而灭为相转移催化剂合成了丁酸苄酯。

Specific surface area, carbon and metal oxide contents of fly ash play an important role in the catalysis process.

其中，粉煤灰的比表面积、未燃炭以及活性金属氧化物均是影响其催化活性的重要因素。

This article summarizes the successful experiences in technology innovation of refinery equipment and reports improvement of construction method in innovation and its effect. The innovationincludes improvement of thermal insulation structure for coke tower, application of fiber sprayingtechnology for lining of pipe heater, improvement of construction in lining of afterheater for heavyduty oil catalysis, adding of acid resistance porcelain plate lining to neutralizing reactor, innovation on central drainage ...

本文归纳炼油设备技术改造的成功经验，报道炼油厂在技术改造中施工方法的改进情况和效果，其中包括：焦碳塔保温结构的改进、纤维喷涂技术在管式加热炉衬里施工中的应用、重油催化余热锅炉衬里施工方法的改进、中和反应器增加耐酸瓷板衬里、浮顶油罐中央排水管改造、锅炉省煤器入口联箱封闭和锅炉水封罐安装放空管以消除运行隐患的改造措施等。

Thinking of presenting problems, this research mainly studied some solid base catalysts which own higher catalysis ability and longer lifetime. Then, the phase diagram and equilibrium data of oil-alcohol-biodiesel-glycerol multiphase system were measured because the biodiesel producing process lacks of thermodynamic data.Based on a double-membranes theory and the thermodynamic data, a kinetic model was proposed. In addition, a mult-step extraction process was proposed to dispose the jatropha curcas l oil with high acid value in order to decrease the acid value. Then, a new technology of biodiesel producing using solid base as a catalyst was developed. The study objects and results are as follows.

本研究针对负载型固体碱催化剂活性组分易流失、使用寿命短的缺点，制备了高效、稳定的固体碱催化剂；针对生物柴油制备体系热力学数据缺乏的问题，测定了大豆油-醇-生物柴油-甘油体系的相图和平衡特性，在此基础上基于双膜理论，建立了固体碱制备生物柴油的动力学模型；同时针对酸价较高的麻疯果油，提出了先用甲醇或乙醇多级萃取降低酸价，再用固体碱催化制备的新工艺。

Comparing with chicken egg-white lysozyme which is widely used in clinic, hLYZ has many advantages: it is a natural protein in human body, so it is safe and harmless when used as a drug; its bioactivity to kill bacterium is three times higher than chicken egg-white lysozyme, and its thermal stability is much higher, too; it also has many other specific important functions which are not related with its catalysis, such as anti-virus and anti-tumor and improving immunization.

人溶菌酶与目前临床上应用最多的鸡蛋清溶菌酶相比具有以下优势：人溶菌酶是人体内的蛋白，具有天然的相容性，没有毒性和副作用；人溶菌酶比鸡蛋清溶菌酶的杀菌活性高3倍，而且热稳定性也要远高于鸡蛋清溶菌酶；人溶菌酶还有多种特有的与其自身的催化作用无关的理化作用，如抗病毒和抗肿瘤。

Because of its special structure, it has been considered to have potential applications in electrode materials, catalysis materials, magnetic materials and gas-sensing materials.

本文研究了过渡金属复合氧化物的制备及其在催化酯合成和废水处理中的应用，主要内容如下：制备了ZnMn_2O_4纳米催化剂，并将其应用于催化合成乙酸正丁酯。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。