烯烃

The synthesis of flame retardant for cotton with a new catalytic system ;2. Advances in the catalytic system s for synthesis of terephthalic acid via oxidation of paraxylene

在不同二苯基二甲氧基硅烷用量、聚合温度及聚合时间等条件下，考察DDS对α-烯烃聚合载体型催化体系活性中心的影响。

The results showed that the partial pressure of n-hexane had little influence on...

结果同时表明与正己烷相比，混和溶剂(25%正己烷和75%正葵烷)具有较高的1-烯烃选择性。

A hydrogenation catalyst contained Co-Mo-Ni active component was used for preparation of pentane with the raffinate of 5-carbon fraction from steam cracking as the raw material.

对活性成分为Co-Mo-Ni的LY-9702加氢催化剂催化蒸汽裂解抽余C5馏分(含60％左右的C5烯烃)制戊烷的工艺条件进行了试验研究。

Use of the invention catalyst to polymerize alpha-olefins is exemplified.

本发明的催化剂可用于聚合α－烯烃。

This invention relates to a primary catalyst component for polymerization of olefins and its preparation.

本发明公开了一种用于烯烃聚合的主催化剂组分及其制备方法。

The experimental results show that the extract yield of Zanthorylum bungeanum oil from nucleus and shuck is 7.8% and 48.9%,respectively.

花椒油是从花椒籽核和壳中提取的一种天然挥发油，其成分以烯烃为主，随产地不同有

In this paper, the carbonylation has been studied of olefins in different solvent systems.

本文研究了烯烃在不同溶剂体系中进行羰基化反应的规律。

Success in this technique would, however, depend on the development of a highly selective sorbent with a high selective adsorption capacity to sorbate.

吸附脱硫和吸附分离烯烃是选择性吸附分离技术两个主要的应用方面。

FT-IR and UV-vis spectra indicated the existence of tetrahedrally coordinated Ti atoms, which may act as active sites for epoxidation of olefin.

FT-IR和UV-vis结果说明该沸石骨架在存在四配位钛，从而有可能成为催化烯烃环氧化反应的活性中心。

The results indicate that biodegradable base oil s markedly promote biodegradation of the unreadily biodegradable oils because of the activation of enzyme in the body of microbe and the increment of specific microbe by inducement and domestication of biodegradable base oil .

研究了生物易降解菜籽油和合成酯类油对生物难降解矿物油和高粘度聚α-烯烃生物降解性能的影响，探讨了复合基础油生物降解性能改善的机制。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。