英语语法分析

A new ethylene tetramerization catalyst system for the preparation of 1-octene has been researched and developed.

本文研究开发了新的乙烯四聚催化体系，用来制备1 -辛烯。

The Zn modified catalyst has not improve the selectivity of catalyst for thiophene in model gasoline containing octene.

不同的金属离子改性表明：1。采用锌离子对催化剂进行改性，没有提高催化剂在烯烃存在时对噻吩的选择性。

The alcohol mixtures are preferably produced by hydroformylation of octene rich streams formed by Fischer-Tropsch synthesis.

该醇混合物优选通过由费-托合成所形成的富含辛烯的料流的加氢甲酰化制成。