查询词典 butene

Acetaldehyde generated from the 2 - butene aldehyde carbonyl and the reaction is the condensation of methylene ...

由乙醛生成2－丁烯醛的反应是羰基与亚甲基发生缩合的。。。

The acylation of 2,3-dimethyl-2-butene by acetic anhydride in the presence of H3PO4 was investigated.

在H3PO4存在下进行了2，3-二甲基-2-丁烯与乙酐的酰化反应。

Catalytic effect of ionic liquids to isobutane and butene alkylate reaction was studied,composition of ionic liquids,isobutane and butene mole compares factors to the alkylate reaction influence was reviewed.

研究了离子液体对异丁烷与正丁烯烷基化反应的催化作用，考察了离子液体组成、异丁烷与正丁烯物质的量比等因素对烷基化反应的影响。

The results show that the styrene is better than trans 2 butene as working gas, and the deposition rate is about 3～4 μm/h for styrene, 1 μm/h for the trans 2 butene.

使用反式 2 丁烯为工作气体的沉积速率相对较慢，最高为 1μm/h ，而使用苯乙烯时，沉积速率提高到 3～ 4μm/h。

The use of the butene is to rely mainly on mixing the butene and producing the petrol component of high hard alkane value, account for 60% of volume of consumption of butene, 11% mixed butene is used as industry or civil fuel.

丁烯的利用是以混合丁烯生产高辛烷值汽油组分为主，约占丁烯消费量的60%，另有11%的混合丁烯用作工业或民用燃料。

In this paper, oligomerization catalyst was prepared by impregnation and the performance of Fe-Ni catalyst was studied for mixed butene oligomerization.The effect of preparation conditions, reaction conditions and molding methods of powder catalyst was separately studied on the performance of mixed-butene oligomerization.

本文采用浸渍法制备了齐聚催化剂，考察了负载型Fe-Ni催化剂在催化混合丁烯齐聚反应中的性能，研究了催化剂的制备条件、反应条件和成型等对混合丁烯齐聚性能的影响。

On the same catalyst, the adsorption velocity and quantity between the isobutane and butene has great differences, which results in the very low isobutane/butene adsorption ratio in the micro-pore of the catalyst, especially at higher temperature.

利用原位红外对异丁烷和丁烯的吸附和反应历程研究结果表明，异丁烷和丁烯在催化剂不同活性位上的吸附反应过程差别很大。

In the part of preparing HMT, the thesis did research on the preparing process of using isobutylene , 2,3-dimethyl-butene-l , 2,3-dimethyl-butene-2 as the materials respectively .

在中间体合成部分，本文分别对新己烯、2，3—二甲基—丁烯—1、2，3—二甲基—丁烯—2为原料合成HMT的工艺进行了研究，然后利用GC-MS对三种原料合成HMT的主要副产物分别进行了分析。

In the part of preparing HMT, the thesis did research on the preparing process of using isobutylene , 2,3-dimethyl-butene-l , 2,3-dimethyl-butene-2 as the materials respectively .Then using GC-MS , the main outgrowths in each reaction systems were analyzed.

在中间体合成部分，本文分别对新己烯、2，3—二甲基—丁烯—1、2，3—二甲基—丁烯—2为原料合成HMT的工艺进行了研究，然后利用GC-MS对三种原料合成HMT的主要副产物分别进行了分析。

Through mechanism analyzing on the process of producing HMT , it was known that because the resistance of isobutylene was small ,the yield of outgrowth in such a reaction system was little and the yield of reaction was as high as 86%. 2,3-dimethyI-butene-2 had the biggest resistance and lowest yield of reaction of 18%. 2,3-dimethyl-butene-l had bigger resistance than isobutylene and more outgrowth than isobutyles but its yield of reaction could reach 70%.

通过对上述三种烯烃合成HMT的研究可知，由于新己烯位阻小，反应中副反应少，收率高达86％：而2，3—二甲基—丁烯—2的位阻最大，反应中副反应最多，反应收率最高仅为18％；2，3—二甲基—丁烯—1的位阻比新己烯大，反应副产物比新己烯多，但反应收率仍可达70％。

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。