查询词典 butyl

Alkylation of phenol was used to research catalytic activity of Y/MCM-41. The results have shown that Y/MCM-41 has higher catalytic activity than the traditional Y and MCM-41. For the Y/MCM-41, not only the conversion of phenol raised with tert-butyl alcohol and reaction temperature raising, but also Useful time of Y/MCM-41 was longer. For the Y/MCM-41, the conversion of phenol raised with reaction time raising, But that increased slowly after 3 hours.

结果表明：Y/MCM一41分子筛具有比Y型或MCM一41更高的催化活性；而对于Y/MCM一41分子筛，随着叔丁醇和温度的增加，苯酚的转化率也增加，且使用寿命也较长；对于Y/MCM-41分子筛，随着反应时间的增加，苯酚的转化率增加，但反应3小时之后，苯酚转化率增加就不明显了。

The N-butyl pyridine tetrafluoroborate (BF4) ionic liquid was synthesized, which was used to prepare the phenyl glycidyl ether as solvent and catalyst.

合成了N-正丁基吡啶氟硼酸盐(BF4)离子液体，并将BF4作为溶剂和催化剂用于苯基缩水甘油醚的合成反应。

The hydrolysis kinetics of two salicylates (n-butyl salicylate, phenyl salicylate) are studied in CTAB surfactant solution by using UV-vis spectroscopy.

应用UY—vis法，在不同温度条件下，对水杨酸酯在CTAB溶液中的水解反应进行跟踪，测定了不同浓度的表面活性剂存在下的反应速率常数，得出CTAB对其反应是禁阻作用。

Bis (2,4-di-tert-butyl-phenyl) pentaerythritol diphosphite (antioxidant 626) was synthesized with pentaerythritol, di-tert-butylphenol and phosphorus trichloride.

以季戊四醇、三氯化磷和2，4-二叔丁基苯酚为原料，在实验室合成了双（2，4-二叔丁基苯基）季戊四醇二亚磷酸酯。

Additionally, polymer product ions indicative of a small amount of water radiolysis were observed, and evidence that the butyl acrylate monomer interacts with -radiation to yield an initiating species is gained.

此外，聚合物产品离子显示少量水辐观察而且有证据表明丙烯酸丁酯单体结合射线辐射产量发起一个物种获益良多。

The separation of neutral macrocyclic calyx [4] pyrroles with 1-butyl-3-methylimidazolium chloride as background electrolyte in acetonitrile was carried out by nonaqueous capillary electrophoresis.

建立了以1-丁基－3-甲基咪唑氯盐离子液体为背景电解质，非水毛细管电泳分离中性大环化合物八甲基杯[4]吡咯、四环戊基杯[4]吡咯、四环己基杯[4]吡咯的方法。

An important intermidiate 2-butyl-4-chloro-5-(4-bromomethyl phenoxy) pyridazinone 3 was first obtained from 4,5-dichloropyridazinone using two different methods. Compounds 4a～4l were synthesized by the reaction of 3 with different oximes.

从2-叔丁基-4，5-二氯哒嗪酮出发，以两种方法合成了中间体2-叔丁基-4-氯-5-(4-溴甲基苯氧)哒嗪酮(3)。3与肟反应合成了含哒嗪酮的苄基肟醚类化合物4a～4l。

Especially in recent years, the development and utilization of many new products such as radical wire tire, acrylonitrile butyl rubber tube, raw edge V-belt and rubber oil seal as well as the development of rubber and plastic mixtures deserve perfect function of the internal mixer.

特别是近年来，随着全钢子午线轮胎、丁基胶内胎、切割V带、橡胶油封等新产品的开发和广泛使用，再加上橡塑共混制品的不断开发，对密炼机的性能要求更加提高。

The star SBS was synthesized with cyclohexane as solvent,tetrahydrofuran as activator,n－ butyl lithium as initiator and silicon tetrachloride as coupling agent.

星形SBS合成中具有实际价值的工艺是用多官能团的偶联剂使单官能团的活性双嵌段共聚物结合在一起，成为星形嵌段共聚物[1]。

Safe for butyl, fluoride and silicon rubber gasket.

本润滑油适用于丁晴、氟、硅等橡胶密封件。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。