异构烷烃

Hydroisomerization reactions of n-paraffins with double-function catalysts have been developed as one of the most important clean method to improve the octane number of the gasoline.

将正构烷烃在氢溢流条件下使用双功能催化剂催化为异构反烷烃是提高汽油辛烷值的最重要的绿色方法。

We projected the possible reaction pathways of the isomeric reaction system for n-pentane, n-hexane and n-heptane according to the products which had been explored in the experiment and the Hydrogen Overfall Hypothesis put forward by ZhongCun YuShi and Teng YunanXun for the isomerization of n-paraffins.

根据实验检测到的产物以及由中村育世、藤元薰等人所提出的正构烷烃异构化的氢溢流机理，首先设计了正戊烷、正己烷、正庚烷异构反应体系可能反应通道。(1)正戊烷异构反应体系可能反应通道(2)正己烷异构反应体系可能反应通道(3)正庚烷异构反应体系可能反应通道

In addition nC〓, nC〓, two isomers of C〓 sterene and three isomers of C〓 isoprenoid hydrocarbons were also identified from aliphatic fraction of pyrolyzed product at 200℃. After pyrolyzed at 300℃, the main aliphatic hydrocarbons were normal alkanes ranged from C〓 to C〓, with C〓 as the main peak and C〓 as the second main peak. Meanwhile, pristane, phytane and C〓 sterane were also detected. In the pyrolysates at 400℃ and 500℃, the content of saturated hydrocarbons decreased, the range of normal alkanes distribution became narrow and the main peak was nC〓. Low concentration of C〓-C〓 steranes was detected and the content of C〓-C〓 increased more.

在200℃热模拟产物饱和烃馏分中除检测出两种长链烯烃外，还检测到正十九碳单烯烃、正三十五碳双烯烃、两个碳二十八甾烯的同分异构体和三个C〓类异戊二烯烷烃化合物同分异构体。300℃模拟产物饱和烃主要为正烷烃，正烷烃的碳数分布范围为C〓-C〓，以C〓为主峰、C〓为次主峰；另外，样品中还检出姥鲛烷、植烷和C〓甾烷等化合物。400和500℃热模拟产物中的饱和烃含量下降，正烷烃系列碳数分布范围变窄，主峰碳后移至C〓，检测到低浓度的C〓-C〓甾烷系列化合物，另外，C〓-C〓藿烷系列化合物含量进一步增加。

The research results indicate that the main reaction from the hydrodeoxygenation of decanoyl/octanoyl-glycerides on the catalysts include hydrogenation saturation,decarboxylization,isomerization and hydrocracking.The main product is alkane.On the Pt/SAPO-11 catalyst,the products composition of HDO f...

结果表明：辛癸酸甘油酯在加氢催化剂上的反应包括加氢饱和、脱羧、异构化和裂化反应，主要产物为烷烃；采用Pt/SAPO-11催化剂的催化加氢产物中异构化烷烃比例明显提高，脱羧反应和裂解反应得到明显抑制。

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。

One zeolite capsule catalyst with a new core (Co/Al2O3)/shell(H-beta membrane) structure was prepared and utilized for the middle isoparaffin direct synthesis via Fischer-Tropsch synthesis reaction.

制备了一种具有Core (Co/Al2O3)/Shell结构的沸石胶囊催化剂，并用来在费托合成反应中进行异构烷烃的合成。

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。

By means of molecular designing, a series of sodium branched-alkyl benzene sulfonates weresynthesized through seven process, involving Frieded-Crafts reaction, Grignard reaction, sulfonationand neutralization. Those isomers have similar structure, carbons of same quantity, but the position ofalkylaryl dissimilarity. Liner fat acid, metaxylene and halogenated hydrocarbon of different carbonnumber were used as the starting materials. Optimum processing condition was confirmed consideringinfluence of a series of reaction factors such as feed proportioning, quantity of catalysts, quantitysolvent, reaction time, temperature and pressure. Eight kinds of isomers of sodium hexadecylxylolsulfonates were finally synthesized, and characterized by FT-IR.

本文通过分子设计，以不同碳数直链脂肪酸、间二甲苯以及不同碳数的卤代烷为原料，经酰基化、格氏反应、加氢还原、磺化及中和等反应，合成了结构相似、烷烃链碳数一定、芳基在烷烃链不同位置的烷基芳基磺酸盐同分异构体；并考察了原料配比、催化剂用量、反应时间、反应温度、溶剂用量、反应压力等一系列因素对各反应的影响，进而确定最佳工艺条件，最终合成出十六烷基二甲苯磺酸钠的八种同分异构体，利用 FT-IR 对产物结构进行了分析。

The volatilizing punching oil developed with isoalkane possesses excellent volatility,lubricity and anti-corrosion ability,which can apply to metalworking of aluminum fin-stock and copper tube.

以异构烷烃为基础油研制的挥发性冲压油具有优异的挥发性能、润滑性能和防腐蚀性能，可用于铝翅片和铜管的加工。

Master the structures, isomers, conformations, namenclature of alkanes; alkyl groups, homology; physical and chemical properties of alkanes, radical reaction; namenclature of cycloalkanes, cis-trans isomerism in cycloalkanes; chemical properties of cycloalkanes.

掌握烷烃的结构，构造异构，构象，系统命名；烷基、同系物；烷烃的化学性质，自由基反应；脂环烃的命名，顺反异构；化学性质。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新