甲醇

A new type direct methanol fuel cell, the tubular air-breathing DMFC has been presented and manufactured.

制备了一种新型的直接甲醇燃料电池，即管状空气自呼吸直接甲醇燃料电池，采用弯曲热压法制备出管状膜电极。

Third, most magnesium alcoholates are prepared by alcoholysis.The process is based on the exchange of alkoxide groups of a metal alcoholate in the presence of an alcohol other than the alcohol corresponding to the original alkoxide,i.e.on the alcoholysis of a metal alkoxide with a different alcohol. Primary alcoholates can be prepared by this process,such as magnesium di-n-propanolate,magnesium di-n-butanolate,magnesium di-isobutanolate.

该方法适用于较高沸点的伯醇的醇镁化合物，例如正丙醇镁、正丁醇镁、异丁醇镁等，但是用醇解法制备出的叔丁醇镁，其纯度只有80％，这是由于叔丁醇具有较大的空间位阻效应，阻碍了醇交换的进一步进行，并且叔丁醇沸点与甲醇相差不大，使得甲醇难以快速蒸出，只能得到一种混合醇盐产物。

Third, most magnesium alcoholates are prepared by alcoholysis.The process is based on the exchange of alkoxide groups of a metal alcoholate in the presence of an alcohol other than the alcohol corresponding to the original alkoxide,i.e.on the alcoho- lysis of a metal alkoxide with a different alcohol. Primary alcoholates can be prepare- d by this process,such as magnesium di-n-propanolate,magnesium di-n-butanolate,m- agnesium di-isobutanolate.

该方法适用于较高沸点的伯醇的醇镁化合物，例如正丙醇镁、正丁醇镁、异丁醇镁等，但是用醇解法制备出的叔丁醇镁，其纯度只有80％，这是由于叔丁醇具有较大的空间位阻效应，阻碍了醇交换的进一步进行，并且叔丁醇沸点与甲醇相差不大，使得甲醇难以快速蒸出，只能得到一种混合醇盐产物。

Aloin is unstable when dissolved in methanol, acetyl acetate was appropriate for use as the solvent in standard solution.

芦荟苷在甲醇溶剂中不稳定，甲醇不适宜做芦荟苷标准样的溶剂，宜改用乙酸乙酯。

When the molar ratio of H2O2 to benzyl alcohol was 0.9, the conversion of benzyl alcohol was 86.2%, the selectiv-ity of benzaldehyde was not less than 99%.

当H2O2与苯甲醇的物质的量比为0.9时，苯甲醇的转化率为86.2%，苯甲醛的选择性≥99%。

Cu complex of the surfactant have water soluble ability and surface activity, can catalyze the air oxidation of benzyl alcohol or Benzoin not only in DMF solution but also in alkali water solution.

表面活性剂铜配合物具有较好的水溶性和表面活性，不但在DMF溶剂中有效催化苯甲醇、安息香的空气氧化反应，而且在稀碱溶液中形成的金属胶束也可催化氧化苯甲醇。

Alcohol rail and nozzle are combined as integrated; carbinol fuel comes into alcohol rail and cooling cavity respectively.

醇轨与喷嘴组合为一体，甲醇燃料经甲醇泵分别进入醇轨和冷却腔。

Study prepared method of dimethylbenzyl carbinol and seek the best technologic conditions and craft route of dimethylbenzyl carbinol.

研究二甲基苄基甲醇制备方法，寻找制备二甲基苄基甲醇的最佳工艺条件和工艺路线。

The present invention uses carbinol as heat-eliminating medium executing nozzle-self cooling, is a simple structure; and feasibility applied on carbinol cracking machine can be realized.

本发明利用甲醇为冷却介质进行喷嘴的自行冷却，结构简单；可实现在甲醇裂解器上应用的可行性。

The author briefly introduces the technological flow,composition,features and technicalrequirements of DCS and FF instruments,with the emphasis on the description of design and debugging of the process control systemof carbinol DrodUCtion,including the architecture of the control system,system configuration of using Control Builder F （V7.1）soft—ware platform,the configu ration of instrument function blocks and the program loading and debugging process

作者简介了甲醇生产的工艺流程、DCS和FF仪表的构成、特点及技术要求；重点描述了该甲醇生产过程控制系统的设计和调试，包括控制系统的结构、采用Control Builder F（V7.1版本）软件平台的系统组态、仪表功能块的组态和程序加载调试过程。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。