环己烯

Three chiral phosphorus ligands were prepared using anisole as the startingat material.Their applications in the asymmetric hydroformylation and asymmetric conjug ed addition of diethylzinc to enones were investigated.

以苯甲醚为原料，合成了三种新的手性含磷配体，考察了三种配体在不对称氢甲酰化反应和ZnEt2对环己烯酮的不对称共轭加成反应中的应用。

As the success of benzene partial hydrogenation to prepare cyclohexene developed by Asahi Chemical Industry Co.,Ltd.,cyclohexanol prepared through cyclohexene is...

这一工艺关键是催化剂的设计及选择，因此本文主要对环己烯水合催化剂进行了考察，并进行了反应工艺条件的优化。

Deoxidization reaction of straw alkali lignin and hydrogen was investigated in the presence of Pd/C catalyst.

以钯/炭为催化剂，以氢气为还原剂与麦草碱木质素进行反应，分析了不同反应条件对催化效果的影响，用化学法测定了反应前后碱木质素官能团的含量，并与环己烯还原法进行了比较。

MCM 22 had the lowest activity of 0 8% and ZSM 5 with 12 membered ring channels gave a ...

MCM 2 2分子筛的活性很低，其环己烯转化率只有 0 8%。

It was found that the RCM reaction taking place during the process of ROMP is the formed polymer.

发现在ROMP反应过程中进行RCM反应产生环己烯是聚合物分子量分布变宽的主要因素。

Large amount of water and zinc sulfate were used to have high yield of cyclohexene.

要得到高的环己烯产率必须添加大量的水和硫酸锌。

The influence of temperature, hydrogen pressure and contents of active compone nt in catalysts are discussed.

讨论了温度、氢气压力、催化剂活性组分含量对苯部分加氢制备环己烯反应的影响。

However, the selectivity and the yield to cyclohexene significantly increased with an increase of the Zn content.

钌和锌必须紧密结合才能得到高的环己烯的产率。

Some new methods of the preparation of cyclohexene oxide by catalytic epoxidation of cyclohexene werld described.

介绍了环己烯催化环氧化的一些新进展。

Both aromatics and cyclohexene have π-electrons and they can form complexes with Ag〓 in stationary phase.

芳烃和环己烯中都有π电子，均可与固定相表面的Ag〓作用形成配合物。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。