查询词典 octane

A new prediction method for octane number of acyclic alkanes is proposed.

提出了一种采用基团组成和拓扑指数分别描述分子的化学组成和结构信息，进而预测烷烃辛烷值的方法。

When the mol quantity of Cu2+ dissolved was 5% of those of AlCl3 in ionic liquids, alkylation results from ionic liquids is comparable with those obtained with concentrated sulfur acid: the yield of alkylate reaching 178% of the volume of butene inputted, the selectivity of C8 reaching 75% and the octane number of alkylate reaching 92.2.

溶入Cu2+和Cu+后，离子液体的催化性能有显著的改善，当Cu2+的摩尔加入量为三氯化铝的5%时，烷基化油收率达到丁烯体积的178%，对C8的选择性为75%，烷基化油辛烷值为92.2，并且离子液体可以重复使用。

Recommended 91 octane or higher fuel/2 (87 octane or higher for XL 883 models).

推荐了91 八炭烷或更高的燃料/2 (87 八炭烷或高为XL 883 模型)。

The analysis of the products shows that the cracking, aromatization and isomerization reaction of hydrocarbons such as octane and benzene-n-octane over the nanoscale HZSM-5 catalyst followed the carbonium ion mechanism.

产物分析结果表明，烃类在纳米HZSM-5催化剂上的裂解、芳构化和异构化等遵循正碳离子机理。

Particularly in the production of high-octane gasoline brands, alone Change processing technology and high-octane blending more difficult are generally used by adding an appropriate amount of ANTIKNOCKS solution.

如美国、欧洲就不准在无铅汽油中使用含铁燃料添加剂。非金属抗爆剂如MTBE，尽管近年来国内普遍采用，因其不能使其充分燃烧会产生致癌物而将被限量使用。

For high octane number fuels, it was found that when an additive named as DTBP is added to RON90 and iso-octane, the HCCI operation ranges could remarkably expand to lower temperature and lower engine load.

针对高辛烷值燃料不容易压燃的缺点，本文在RON90燃料和异辛烷中加入一定比例的过氧化二叔丁基，达到了控制高辛烷值燃料着火时刻、提高燃烧效率、降低排放的目的。

Experiments were carried out on a HCCI platform to evaluate the effects of cetane number and octane number on the HCCI combustion characteristics and emissions using n-heptane, RON25, RON50, RON75, RON90, and iso-octane.

进一步在发动机上对正庚烷、RON25、RON50、RON75、RON90和异辛烷在不同负荷下的HCCI燃烧特性和排放特性进行了试验研究。

Attempts have been done to increase the value of light naphtha isomerizes RON 60 to 70's light naphtha into RON 83 to 90's higher Octane number light naphtha to blend RON 95, or 98 higher Octane gasolines.

本研究为提高轻石油脑的应用价值，应用轻油异构化工场将辛烷值只有60~70的轻石油脑提升至83~90，成为掺配95和98高辛烷值汽油重要轻质油料之一。

The results of n-octane and methylcyclohexane oxidations showed that the C-C bond in n-octane broke more easily than that in cyclohexane under reaction condition.

不同分子结构的烷烃氧化反应结果表明，正辛烷中的C-C键相比于环己烷中C-C键，更容易断裂。

The octane number of 5 substances were predicted using the new methods.The results show that the second level group contribution method exhibits significant improvements in accuracy and should be used for estimating the octane number of branched and ring hydrocarbons.In cases of simple straight chain bydrocarbons, however,the first level group contribution method should be used.

用新方法对未参加回归的五种物质的辛烷值进行了预测，结果表明对于含有支链和环的烃应采用第二水平基团法估算其辛烷值，对简单的直链烃采用第一水平基团法估算其辛烷值。

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。