查询词典 methanol

A solid acid catalyst was developed for preparing biodiesel from cottonseed oil by transesterification with methanol.

研制出适用于棉籽油与甲醇发生酯交换反应制备生物柴油的固体酸催化剂。

Methyl ester and tetrahydrofuran both made methanol dissolve in cottonseed oil easier.

结果表明，生成的甲酯和加入的四氢呋喃都可促使甲醇和棉籽油互溶，使反应均相进行。

Companies established 27 years ago, has to stand in chemical, fertilizer production and development of accessories and has accumulated rich experience in production of gas by cutting campaign,注油Series, rod, connecting rod, crosshead, Pistons, Piston Ring , Sealed packing, aluminum pad, copper pads, and other national campaigns ISO9002 international quality management system certification, quality and stability, for users across the country to provide a large number of accessories vulnerability to China's chemical industry, chemical fertilizer, methanol production to a certain Contributions received by the user.

公司建立二十七年来，一直致立于化工，化肥配件的生产与开发，积累了丰富的经验，所生产的气伐系列、注油器系列、活塞杆、连杆、十字头、活塞、活塞环、密封填料、铝垫、铜垫等系列获得国家ISO9002国际质量管理体系认证，质量稳定，已为全国各地用户提供了大量的易损配件，为我国的化工、化肥、甲醇生产作出了一定的贡献，得到用户的。

This article describes the new process of methyl methacrylate which uses methanol,carbon monoxide and acetone as raw materials,via acetone cyanohydrin route;makes the simple economic comparison between the concept design of Chem.

描述了日本三菱瓦斯化学公司以甲醇、一氧化碳和丙酮为起始原料，经丙酮氰醇制取甲基丙烯酸甲酯的新工艺以及化学系统公司的概念设计流程与传统丙酮氰醇工艺的简单经济比较。

The results indicated that higher phenol conversion and cyclohexanol selectivity could be obtained under the condition of higher temperature and pressure, and lower space velocity and methanol content, while phenol concentration had almost no effect on the reaction performance.

结果表明，较高的反应温度和压力以及较低的液体空速和甲醇含量有利于提高苯酚的转化率和环己醇的选择性，但是苯酚的浓度对反应性能的影响不大。

Crystallized sulfuric salt of SAM was obtained by centrifuging the precipitant at 3000 rpm after adding six times the volume of absolute methanol to the decolorant liquid with a final step of freezing evaporation.

确定了分离纯化SAM的最优条件是：在pH值5.0时，含SAM浓度为3.0 g/L的上柱液，以6 L/h的流速，过装填D152树脂的离子交换柱(φ50 mm×1500 mm)后以去离子水和醋酸洗脱除杂，再用9 L到15 L浓度为50 mmol/L的硫酸以6 L/h的流速洗脱，可以分离得到纯度较高的SAM粗品。

Chapter two 4-Hydroxybenzoic acid is connected with PEG6000 through defoliant DCC at rooom temperature, then the product is refluxed with chloroacetic acid in acetone to afford PEG-bound phenyloxyacetic acid, which is reacted with thionyl chloride, ammonium thiocyanate and arylamines in turn to give PEG-bound disubstituded thioureas. After the cleavage with sodium methoxide in methanol, the eleven disubstituted thioureas are obtained.

第二章 利用PEG6000作载体，通过脱水剂DCC在室温下将对羟基苯甲酸以酯键连接在PEG6000上，再与氯乙酸在较温和的条件下生成PEG6000支载的芳氧乙酸，然后，依次与亚硫酰氯、硫氰酸铵、芳胺反应，生成PEG6000支载的硫脲，最后用甲醇钠的甲醇溶液切割PEG，得到了十一种1，3-二取代硫脲。

As a result, the micromirrors will be adhesioned to the underlying substrate, because of the large area of segmented deformable mirrors and surface tension of water, after the micromirrors are dried, if the elastic forces can not overcome the surface tention.Secendly, several different procedures commonly used to rinse and dry released micro cantilever beams are compared: evaporation drying with deionize water or methanol, sublimation drying with t-butyl alcohol.

结果发现，由于MEMS微变形镜上极板的面积比较大，在工艺最后清洗的过程中，由于表面张力的作用，上极板极易与下极板接触，干燥以后，如果弹性回复力不能克服各种表面应力，MEMS微变形镜将发生释放粘附。

By using a vitrating digital densimeter (DMA602/60), the densities of glycine and alanine in aqueous methanol, ethanol and propanol solutions were measured at 298.15 K, and the apparent molar volumes calculated. According to McMillan-Mayer approach, the volumetric interaction coefficients were evaluated.

用DMA602/60型震动管数字密度计测定了298.15 K下甘氨酸、丙氨酸分别在纯水和四个不同浓度甲醇、乙醇和丙醇水溶液中的密度，计算了相应的表观摩尔体积，用最小二乘法拟合了氨基酸在醇水溶液中的标准偏摩尔体积。

The enzymatic esterification of soybean oil deodorizer distillate with methanol catalyzed by lipase was studied.

采用酶法研究大豆油馏出物甲酯化的工艺。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。