查询词典 octane

For the riser reactor, the simulation result showed that the mass fraction of olefin decreased from 35.1% to 18%, and most of the olefin was converted to isoparaffin, which was useful to maintain the gasoline octane rating.

模拟结果表明，对提升管反应器而言，汽油经过低温改质反应后，烯烃含量可以从35.1%降低到18%左右，烯烃降低幅度可达48%，汽油中烯烃主要转化为异构烷烃。

Tests of FCC naphtha upgrading were conducted under such optimum reaction conditions (with a reaction temperature of 450℃), as compared with the untreated naphtha the olefin content of the treated naphtha decreased from 40.74% to 25.80%, the contents of isoparaffin and aromatics increased significantly, the computed octane number was 5.48 unit higher, yet the naphtha yield dropped 14.25 percentage points and the LPG yield increased 13.52 percentage points.

在450℃的优化条件下，催化裂化汽油改质后，烯烃质量分数由40.74%降至25.80%，异构烷烃和芳烃含量有较大幅度的增加，计算辛烷值RON提高了5.48个单位，汽油收率降低了14.25个百分点，液化气收率提高了13.52个百分点。

This paper describes the determination of the heat of desorption of octane on microcrystalline cellulose

在此说明应用无限稀释脉冲IGC 在两种湿度条件下，确定微晶纤维中辛烷解吸热的方法。

A process for preparing clean gasoline features that under existance of epoxidizing catalyst and alkoxylating catalyst, the olefine in gasoline and the oxygen and alcohol take part in epoxidizing and alkoxylating reactions to generate diolmonoether or dioldiether compounds which has higher octane number, so being excellent gasoline component.

本发明公开了一种清洁汽油的生产方法，在一个具有环氧化的催化剂以及同时具有烷氧化催化组分或者催化剂的存在下，汽油中的烯烃与氧、醇、发生环氧化、烷氧基化反应而生成二醇单醚或二醇双醚类化合物，这类化合物具有较高的辛烷值，是优良的汽油组分。

The catalyst of RFG-DQ and DOCO(1) can both reduce the olefine content of gasoline dramatically, with the yield of LPG ,diesel and coke reduced and the yield of gasoline increased, as well as octane number of gasoline reduced more greatly.The olefine content of gasoline can be effectively reduced by optimizing the operation condition, lowering the reaction temperature, increasing the catalyst-to-oil ratio and using catalyst, which can improve the gasolines quantity and upgrade the gasoline.

通过优化操作条件、降低反应温度、增大剂油比和采用有效降烯烃催化剂等措施可以有效的降低催化裂化汽油的烯烃含量，提高催化裂化汽油的产品质量，达到我厂汽油产品升级换代的目的。

With chromium phosphomolybdate as catalyst and H2O2 as oxidant,catalytic oxidative removing of dibenzothiophene in n-octane under microwave irradiation was studied.

以磷钼酸铬盐为催化剂、过氧化氢为氧化剂，研究了微波辐射加热下模拟汽油中二苯并噻吩的氧化脱除。

Seven of them have not been reported.Their structures were confirmed by IR,~1HNMR,MS,and element analysis. 4.Meanwhile,the green methylation procedure of imides was developed by using dimethyl carbonate as methylation reagent.A series of imides,for example,phthalimide,3,4-dibromo-maleimide and succincide were used for substrates.The effects of DABCO(1,4-diazabicyclo [2.2.2]octane)and DBU(1,8-diazabicyclo[5.4.0]undec-7-ene)as a catalyst in this kind of reactions were investigated.2-Bromo-3-(1-methylindolyl-3-yl)-1-methyl-1H-pyrrole-2,5-dione was prepared by using dimethyl carbonate,which further expanded the use of dimethyl carbonate,as a green agent in organic synthesis.

在以硫酸二甲酯为甲基化试剂对3，4-二溴马来酰亚胺进行N-甲基化反应合成3，4-二溴-N-甲基马来酰亚胺的同时，以碳酸二甲酯为甲基化试剂，对3，4-二溴马来酰亚胺、邻苯二甲酰亚胺、琥珀酰亚胺等酰亚胺类化合物的N-甲基化反应进行了研究；考察了1，4-二氮杂双环[2.2.2]辛烷，1，8-二氮杂双环[5.4.0]十一碳-7-烯、碳酸钾和四丁基溴化铵等作为催化剂对碳酸二甲酯N-甲基化反应的反应时间和收率等的影响，并应用碳酸二甲酯为甲基化试剂，合成了N-甲基-3-溴-4-(1-甲基-吲哚-3)-马来酰亚胺。

But superslick bubblegum always needs an original flavor, and Lee doesn't have Carey's pyrotechnical reserves or the high-octane pheromones of Britney and Christina or the serpentine soul of Kelly Price (her duet partner on "Can't Get Over").

但是这种非常华丽的泡泡糖摇滚舞曲总是需要一种最初的滋味，而李玟没有凯莉的爆发力，也没有Britney 和Christina的极新颖的费尔蒙，也没有或Kelly Price(李玟新专辑中歌曲&Can't Get Over&的合唱人)的蛇灵魂。

At last,according to the identification,with the oneˉdiˉ mensional unsteady methods, the internal ballistics performance of S RM with highˉoctane propellant during storage was researched, and compared the calculated date with the testing dat a, the result showed the model and methods were reaˉ sonable and effective.

基于参数辨识，采用一维非定常模型对高能固体推进剂贮存条件下发动机内弹道性能进行了预示，并与试验结果进行了比较分析，计算表明所建模型合理，方法有效。

The said process can regenerate catalyst continuously or intermittently to maintain the catalytic activity of the alkylating catalyst for long period and has lowest loss of produce in amount and octane number while eliminating the thiofuran sulfur impurity in material.

采用该方法可对催化剂连续或间歇再生，克服烷基化催化剂一般寿命短的缺陷，并且可以长时间维持烷基化催化剂的活性；在脱除原料中噻吩类杂质硫的同时使得产品量损失最小及产品辛烷值损失最少。

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。