查询词典 olefin

These catalysts can exhibit desirable performance for aromatizing the olefin of FCC gasoline in fixed bed reactor without existence of hydrogen, and can be used in fluid bed reactor.

通过300小时催化剂的单程操作和23次催速再生试验，表明催化剂有良好的稳定性和再生性能。

The results showed that the β zeolite had better activities of isomerization and aromatization,and the cracking and aromatizing activities increased with the reaction temperature increasing,but the yield of isomerized olefin s decreased.

结果表明，β沸石具有较好的异构化和芳构化能力，并随反应温度的升高，其裂解和芳构化能力逐渐增强，异构烃产率逐渐降低；工业低硅ZSM-5型分子筛的裂化活性较强；催化裂化汽油经改质后其烯烃含量均有所降低，且辛烷值基本不变。

Further more, The ZSM-5 zeolite catalyst was modified by molybdenum ion, which possesses bifunctions of aromatizing olefin and removing sulfur in gasoline.

模型烯烃原位反应表明MCM-22上有两类芳构化活性中心，在反应温度分别为190℃和320℃具有芳构化性能，后者是生成芳烃的主要活性中心。

Ni/ZSM-35 catalyst, as another kind of upgrading catalyst, was used for skeletal isomerizing and hydrogenating olefin in FCC gasoline in the reactor of 100ml catalyst loading.

此外通过添加钼改性ZSM5催化剂，在确保芳构化反应性能的基础上改善了催化剂的脱硫性能，对于硫含量为3070ppm的汽油，脱硫率达到90％。

The present invention is one kind of supported olefin polymerizing catalyst of metallocene and post-transition metal and its reaction process of catalyzing ethylene polymerization.

本发明是关于一种负载化茂金属和后过渡金属烯烃聚合催化剂及其制备方法，以及其催化乙烯聚合的反应工艺。

By comparison with docosanoic acid and sulfurized ios-butyl olefin, it was found that when sulfur element was int...

钢球磨损表面XPS分析结果表明，在摩擦过程中硫化廿二酸发生了摩擦化学变化，表面EPMA分析结果表明其表面保护膜富含氧和硫

It was found that the load carrying capacity of Ni P brush plating layer was increased obviously and the wear rates of Ni P and Ni Cu P brush plating layers were decreased very much with the addition of sulfurized olefin in lubricating oil.

结果表明，在基础油液体石蜡中添加适量的硫化烯烃润滑时，Ni－P镀层的承载能力显著提高，Ni－P镀层和Ni－Cu－P镀层的磨损率都明显降低。

Indicate that using mixed olefin and sulfur with high-pressure to prepare the organic sulfurizing agent and using ex-situ presulfurization, is the important direction in presulfurization field.

提出采用高压法以混合烯烃和硫为原料制备有机硫化剂，进行器外预硫化，是今后预硫化领域发展的重要方向。

Grain of ear of methodological pagoda tree gives after art of transplanting of small rat heart Qing Dynasty of ear of 6mg/g weight pagoda tree creams fill stomach handles; transplanting repulsion to contrast everyday group and the transplanting that be the same as a department contrasts the 5d after art of; of group fill clear water or transplanting repulsion terminus are collected do olefin pathology for the heart.

方法槐耳颗粒在小鼠心脏移植术后天天予以6mg/g体重槐耳清膏灌胃处理；移植排斥对照组和同系移植对照组灌清水；术后5d或移植排斥终点收集供心做石蜡病理切片行HE染色及免疫荧光检查。

Using water and olefin as the medium, the flow and atomization characteristics of internal-mixing two-phase atomizers were investigated.

利用水和石蜡为介质分别研究内混式两相流喷嘴的流量和雾化特性。

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。