异构烷烃

ZSM-5 molecular sieve is widely used as catalyst for aromatization, catalytic cracking and isomerization.

ZSM-5分子筛是应用广泛的催化体系，常用于烷烃的芳构化、催化裂化及异构化。

ZSM-5 molecular sieve was widely used as catalysts for aromatization, catalytic cracking and isomerization.

ZSM-5分子筛是应用广泛的催化体系，常用于烷烃的芳构化、催化裂化及异构化。

Thermodynamic analysis on the n C5, n C6 paraffin isomerization reaction was worked out in detail .

对C5、6正构烷烃异构化反应进行了详细的热力学分析。

Latest advances in studies on mechanisms for hydroisomerizaton of n-alkane over bifunctional catalysts supported on zeolites,including monomolecular and bimolecular reaction mechanisms, pore mouth mechanism and key-lock mechanisms,were reviewed.

综述了近年来正构烷烃在分子筛为载体的双功能催化剂上加氢异构化反应机理的研究进展，介绍了单分子机理、双分子机理、孔口机理及锁匙机理，并展望了反应机理在制备新型催化剂领域的应用前景。

Such as pentane there are three isomers, Wang alkyl has 35, while containing 30 carbon atoms, the number of isomers of alkanes up to 411 × 109 Ge.

例如戊烷的异构体有3个，王烷有35个，而含30个碳原子的烷烃的异构体数目高达411×109个。

Based on GC and GC-MS analyses, the geochemical characteristics of these typical deep viscous oils are listed as follows:(1) strong preference of even n-alkanes over odd n-alkanes;(2) strong preference of phytane over pristane, i. e. Pr/Ph ratio＜＜1;(3) high abundance of gammacerane relative to C〓hopanes;(4) much more amounts of C〓 pentakishomohopanes than C〓 tetrakishomohopanes and even C〓 trishomohopanes.

罗家—垦西地区稠油饱和烃色谱、色谱-质谱分析结果展示：(1)正构烷烃具有明显的偶奇优势；(2)类异戊二烯烷烃具有较强的植烷优势，姥姣烷/植烷比值远小于1；(3)伽玛蜡烷相对含量(相对于C30藿烷)普遍很高；(4)C35升藿烷明显高于C34、甚至C33升藿烷；表现出膏盐湖相生物标志物的组成特征。

The biomarkers such as the n-Alkanes, the isoprenoids, the terpane, and cholestane were detected through GC-MS analysis. Based on the study of the biomarkers, the biological evolution during Permian and Triassic can be divided as three stages, namely, the mixing source stage of low biota such as thallose and advanced plant in late Permian (below bed 63), the stage of low biota such as thallose in the boundary transitional layer (bed 63-69) and the mixing source stage of advanced plant and low biota such as thallose in early Triassic (above bed 69). What's more, the second stage near the boundary transitional layer can be subdivided into 4 stages. The stages of biota evolution is close related with sedimentary environment changing and the boundary transitional layer.

利用GC—MS分析技术，在陆相地层中检测出正构烷烃、类异戊二烯烷烃、萜烷和甾烷类生物标志化合物并根据生物标志化合物和特征值研究，将二叠系—三叠系生物演化划分为三个大的阶段，即晚二叠世的菌藻类低等生物与高等植物混源阶段（63层以下），界线异常层的菌藻类低等生物阶段（63-69层）和早三叠世高等植物与菌藻类低等生物混源阶段（69层以上），界线附近异常层的第二阶段又进一步细分为4个次一级阶段，生物演化阶段与沉积环境变化及界线异常层具有非常密切关系。

The hydroconversion of n dodecane on the Pt M/SAPO 11 catalyst was investigated in a microreactor.

以正十二烷为模型化合物，在高压微型反应装置上进行了长链烷烃在Pt M/SAPO 11催化剂上的加氢异构化反应规律研究。

Any of three colorless, flammable isomeric hydrocarbons, C5H12, derived from petroleum and used as solvents.

戊烷有三种同分异构体的无色可燃烷烃，c5h12，从石油中提炼，可用做溶剂

According to the evaluate and the sift through light paraffine isomerization catalyst,It showsthat preparated Pt-SO_4~(2-)/ZrO_2-Al_2O_3 catalyst achieved superior activity under the condition thatthe calcination temperature is 650°C、 concengtration of SO_4~(2-) is 0.5mol/L、 the content ofAl_2O_3 is 30% and content of Pt is 5%.

通过对轻质烷烃异构化催化剂的评价与筛选，表明所制备的 Pt-SO_4~(2-)/ZrO_2-Al_2O_3 催化剂在焙烧温度为 650°C 、SO_4~(2-)浓度为 0.5mol/L、第二金属氧化物组分 Al_2O_3含量为 30%，金属 Pt 含量为 0.3%时，该催化剂用于异构化反应效果最佳。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。