查询词典 benzene

The results showed that alkylation of benzene with ethanol occurred via stepwisemechanism.

结果表明，苯与乙醇的烷基化按照分步机理进行，速控步骤的活化能为170.34 kJ/mol。

And the mole ratio of benzene to propylene on the alkylation process have been studied.

统计了中试研究数据并进行了数学关联，获得了BPA分子筛催化剂对异丙苯、二异丙苯选择性和反应器床层温升的关联式。

The experimental and theoretical work on high pressure phase equilibria of the Benzene-Ethylene Alkylation system are undertaken at first.

本文首先通过实验测定与理论计算，得到了苯与乙烯反应系统的高压流体相平衡，确定了近临界区的大致范围，并结合反应系统，提出了操作上值得注意的因素。

The effects of reaction temperature, molar ratio of benzene to DEO and WHSV on the alkylation reaction were also studied.

此外还考察了温度、原料配比、空速等条件对该反应的影响。

Secondly, based on the phase behaviors, a new method for partition of supercritical reaction regions is used to study benzene-propylene alkylation under near critical conditions.

在相行为研究的基础上，使用对近临界点区域分区的方法进行丙烯与苯烷基化反应的研究。

The alkylation of benzene with long-chain olefins has been performed in the presence of ionic liquid, the reaction conditions are optimized.

研究了离子液体催化苯与烯烃的烷基化，考察了反应条件对烷基化反应的影响。

Deactivation and regeneration of QZ-2000 catalyst for alkylation of benzene and propylene to synthesize cumene were studied.

对苯和丙烯烷基化反应合成异丙苯的QZ-2000烷基化失活催化剂进行了失活原因及再生条件的研究。

In this novel cyclization, nucleophiles very regioselectively attack the internal C1′alkyne carbon of enediynes to give benzene derivatives as a single regioisomer.

在这新的环化，亲核攻击非常regioselectively内部C1'alkyne碳的enediynes给予苯衍生物作为一个单一的regioisomer 。

And because the structure of benzene nucleus as rigid and flexible alternating permutation of the hydrocarbon chain in order to facilitate the physical properties of polyacrylamidewith pingment.

又因其布局为刚性的苯核和柔性的烃链瓜代摆列，催促涂膜的物理板滞本能机能增不弱。

For the reaction of propylene and benzene, acetone and phenol occurs, catalysts using aluminum chloride.

二为将丙烯与苯发生反应生成丙酮与苯酚，催化剂采用三氯化铝。

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。