查询词典 benzene

The ZnO/MCM-41 catalyst exhibits high activity for the hydrogenolysis of methyl benzoate to toluene or benzene.

该催化剂具有较高的苯甲酸甲酯氢解活性。

The yields were better when DHPCE with nitro group in meta or ortho position of the benzene ring were hydrolyzed in basic conditions, while the hydrogenolysis and acidic reactions gave very poor yields.

当苯环的间位和对位存在硝基，碱性水解时，在二氢吡啶环的3位引入氯乙醇的酯能得到较好的收率；酸性水解和氢解法则不宜用来合成ADHPA。

Hydroxy benzene acetic acid and acetic acid have biological activity, such as anti-bacterial and other aspects, a wide range of applications.

苯羟基乙酸和苯氧乙酸都具有生物活性，在诸如抗菌等方面具有广泛的应用。

Therefore, we started hydroxy benzene acetic acid and acetic acid coordination unit for the nodes of copper, cobalt, cadmium, manganese, zinc coordination polymers of structural chemistry studies.

因此，我们开展了苯羟基乙酸和苯氧乙酸配位单元为节点的铜、钴、镉、锰、锌配位聚合物的结构化学的研究。

The study on treatment contain other carbon sources of hydroxyl benzene wastewater has certain significance.

该研究对处理含有其它碳源的含酚废水具有一定的意义。

These materials were effective catalysts in the hydroxylation of benzene with H2O2 under room temperature.

所合成材料室温下在苯的过氧化氢直接羟基化反应中表现出良好的催化性能。

Recent progress and synthesis methods on direct hydroxylation of benzene to phenol are systematically introduced.

介绍了近年来苯直接羟化合成苯酚的研究进展和合成方法。

The material exhibited a good catalytic activity in the reaction of benzene hydroxylation.

所合成的材料在苯的羟基化反应中表现出良好的催化活性。

The catalysis behavior of Fe-MCM-48 and V-MCM-48 for the hydroxylation of benzene were studied.

并初步研究了Fe-MCM-48和V-MCM-48对苯的羟基化反应的催化活性。

Solvent and reducing reagent play very important roles in the benzene hydroxylation oxidized by molecular oxygen.

以上无论是常压还是高压条件下的苯氧化轻基化反应的结果都大大高于已有的文献报道。

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。