酯化了的

The synthetic method for nickel borate acylate, a kind of rubber-steel c ord adhesion promoter, through nickelous carbonate borate and mixed carboxylic a cids was studied, and many factors influencing the synthesis of NBA were investi gate d systematically.

研究了以碳酸镍、硼酸酯和混合羧酸合成新的金属橡胶粘合促进剂硼酰化镍的新方法。系统地考察了各种因素对合成硼酰化镍的影响。

This paper is focused on the preparation, characterization of metal clusters and theircatalytic performance in the enantioselective as well as stereoselective hydrogenations. It iscomposed of the five parts as follows: Chapter 1 A review was given on the two most studied enantioselective systems—Ni/TA and Pt/cinchona system, including some recent progress.

本论文研究了铂、铱纳米金属簇在α-酮酯、α-二酮不对称氢化中的催化性能及金属离子在α-二酮立体选择性氢化中的修饰作用，主要分为以下几部分：第一章对多相不对称催化体系一Ni／TA和Pt／cinchona及其一些最新进展作了较系统的评述；同时简要介绍了纳米金属簇的特性及其在催化中的一些应用。

Using the Esterificational Reaction and the Pentane Isomerization Reaction as probes, catalytic activity of these superacids which were prepared by different process conditions such as different concentration of H2SO4, immersing time.

研究了不同的H_2SO_4浓度，H_2SO_4浸泡时间，焙烧温度，焙烧时间，包覆次数制备的催化剂催化酯化反应及正戊烷异构化反应的活性，并将其结果和表征结果进行了关联。

Element analysis shows that Si exists on the surface of hybrid membrane when TEOS content is not too low. The effects of TEOS content on the performance of hybrid membranes were investigated.

实验初步考察了正硅酸乙酯的添加量对聚偏氟乙烯－硅杂化膜的超滤性能和力学性能的影响，对杂化膜进行了能谱分析。

The new surfactant was synthesized from the main starting materials such as lauric acid, p-cresol, chlorosulphonic acid and ethylene diamine, by 5 classic reactions which are acyl chlorination, esterification, Fries rearrangement, sulfonation and condensation, with total yield of 58%.

作者以十二酸、对甲酚、氯磺酸、乙二胺等为主要原料，共采取了酰氯化、酯化、Fries重排、磺化和缩合等5步经典的单元反应，合成了该表面活性剂，总收率为58％，并探讨了各步反应的条件对收率的影响。

Sodium5sulfoisophthalic acid dimethyl ester was prepared by sulfonation of mC 6H 4 2 with chlorosulphonic acid , treatment of the 5sulfoisophthalic acid with methanol to esterify the -CO 2H groups and separation of the product in the form of sodium salt of sulfonic acid.

研究了由氯磺酸和间苯二甲酸经磺化及酯化反应合成间苯二甲酸二甲酯磺酸钠盐的工艺方法，探讨了投料比、反应温度、催化剂用量和反应时间对产物的影

In this paper, synthetic process of PTT and cationic dyeable PTT was studied, including molar ratio, catalyst concentration, reaction time and temperature, types of antioxidants in the esterification reaction and the condensation reaction.

研究了聚对苯二甲酸丙二醇酯、阳离子染料可染PTT的合成工艺条件中各因素对酯化及缩聚反应的影响，包括单体物质的量比、催化剂浓度、反应时间和温度、抗氧剂种类等。

The choice and technology of the phosphation reagent were investigated.

在合成中对磷酸化试剂的选择及制备工艺进行了考察，研究了反应温度，反应时间，反应物与磷酸化剂的摩尔比对磷酸单酯含量的影响。

In order to improve the conditions of synthesis, the effects of kinds of catalysts, mole ratio of alcohol and acid, reaction time were investigated by the variance analysis.

利用正交设计法，通过极差分析，探讨了催化剂种类、醇酸摩尔配比和酯化时间及它们之问的交互作用对酯的收率的影响。

The synthetic process for a new plasticizer used in low temperature, dibutyl nylonic acid ester, was introduced.

介绍了一种新型耐寒增塑剂尼龙酸二正丁酯的合成工艺，用价廉、易得的尼龙酸(由制己二酸母液中获得的C4～C6混合二元酸)及正丁醇为原料，浓硫酸为催化剂，经酯化、脱醇、中和、沉降及减压蒸馏等工序而制得产品。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。