异戊烷

The basic principles of membrane separation technology for recovering butene and iso-pentane from VOC/ N2 are described, and the influence of operating condition on membrane separation is indicated.

介绍了有机蒸气膜分离的技术进展，阐述了应用膜分离技术从有机蒸气/氮气混和气中分离回收丁烯和异戊烷的基本原理，指出了操作条件对膜回收效果的影响。

Application of isopentane /cyclopentane foamed rigid polyurethane in refrigerators is introduced.

介绍碳氢发泡新一代替代技术：环戊烷-异戊烷发泡聚氨酯硬泡技术在冰箱生产中的应用情况，并从发泡工艺及性能上与环戊烷发泡体系进行了比较。

There is more methane,ethane, isobutane and isopentane in shaly limestone than in marlite.

泥灰岩比纯灰岩所产气体中含有更多的甲烷、乙烷、异丁烷和异戊烷。

The higher selectivity to isopentenes, however, was regarded as a consequence of both insufficient active sites for further hydrogenation of isopentenes to isopentane and lower electronic interaction between Pd and the alumina surface.

而较高的选择性则可归因於没有足够的钯活性中心可供异戊烯进一步氢化生成异戊烷以及钯金属和氧化铝间较低的电子效应所致。

Isoprene could be deeply hydrogenated to isopentane on nickel catalyst.

异戊二烯在镍基催化剂作用下可深度加氢为异戊烷。

In LNG factories, there were many disadvantages like the cost will be extremely high because huge quantities of isopentane had to be used in the previous debenzene technology by use of the similarity and compatibility theorem.

LNG工厂原来的脱苯工艺是利用"相似相溶"原理，用异戊烷脱苯，但存在异戊烷消耗量太大，成本较高等诸多弊端。

The concentrations of isopentane, 2-methyl-pentane, pentane and 3-methyl-pentane which are from automobile exhaust and gasoline evaporation were highest in alkanes. Benzene/toluene ratio was close to 0.5 which is the characteristic value of automobile exhaust. The concentrations of pinene and isoprene were highest in alkenes.

烷烃类物质中异戊烷、2-甲基戊烷、正戊烷和3-甲基戊烷等机动车尾气或汽油挥发特征性物质浓度最高；芳香烃类物质中苯／甲苯的特征比值略高于机动车尾气排放特征比值0.5；烯烃类物质以植物排放的蒎烯、异戊二烯为主。

The selected prepared catalyst for isomerization of light oilis used under the reaction conditions of 260°C, 2.0MPa, WHSV=1.0h-1 , H2/Hydrocarbon molarration 4.0, n-pentane conversion rate is 62.17%,isopentane yield is 57.01%(isomerization rate is58.00%), isopentane selectivity is 91.60%, liquid product yield is 94.84%.

在 T=260°C，P= 2.0MPa ，WHSV= 1.0h-1 ，H/C5= 4.0 时，正戊烷转化率为 62.17%，异戊烷收率为 57.01%(产率为58.00%)，选择性为 91.60%，液体产物收率为 94.84%。

It was found that more branch-2 olefin and C5~C6 isoparaffin molecules existed in MIP naphtha. The cause of MIP naphtha having higher octane number and less octane loss during hydrotreating could be explained by the octane model of C6 hydrocarbons quantitatively.

通过对MIP和FCC汽油组成分析，发现MIP汽油组成含有较多的多支链烯烃、异戊烷和异己烷，基于碳六烃的辛烷值模型，可以定量地解释MIP汽油辛烷值高和加氢MIP汽油辛烷值损失低的原因。

It is shown that solubility of ethylene can be described by Henry's law and that of n-hexane and iso-pentane is non-linear.

结果表明，乙烯溶解度呈线性，符合Henry定律；正己烷和异戊烷的溶解度呈非线性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。