查询词典 methylnaphthalene

It was found that moisture in the system of reaction is main reason that lead to deactivation of ionic liquids. The reaction mechanism of transalkylation reaction of methylnaphthalene and 1,2,4,5-tetramethylbenzene catalyzed by chlorine-aluminate ionic liquids has been proposed.

考察了离子液体的循环使用情况，分析确定了离子液体的失活原因，认为反应体系中的微量水使离子液体水解是造成离子液体失活的主要原因。

Synthetic technology of 2,6-dimethylnaphthalene (2,6-DMN) by adopting the transmethylation method using methylnaphthalene as raw material was studied in this paper.

研究了以甲基萘为原料采用转移甲基化法合成2，6-二甲基萘(2，6-DMN)的工艺条件。

The shape-selective syntheses of 2,6-dialkylnaphthalene, which use naphthalene or methylnaphthalene as reactants, are considered as the most rational technical route.

以萘或甲基萘为原料的择形烷基化合成2，6–二烷基萘的路线简单，被认为是最合理的技术路线。

Therefore, in this paper, the process for preparing 2,6-DMN by methylation of methylnaphthalene over AlClx/HY and AlClx/HY-U zeolite catalysts is employed. The effects of reactions conductions on reaction results were studied.

为此，本文采用2-甲基萘烷基化的合成路线，考察了AlClx/HY型和AlClx/HY-U型分子筛的反应活性，以及反应条件的影响。

In the traditional process,β-methylnaphthalene is oxidized with solution of chromic acid to give β-methylnaphthoquinone. However, a great deal of waste water with chromium will be produced in the process, which is very serious to environment. At the same time, the raw material consumption is great, which lead to the high production cost. Furthermore, by-product 6-methyl-1, 4-naphthoquinone will be produced, which is difficult to be separated completely and be utilized solely.

传统的生产工艺是用铬化物氧化β-甲基萘制备β-甲基萘醌，此工艺在生产过程中会产生大量的含铬废水，处理繁杂困难，对环境污染十分严重，并且原料消耗大，成本高，反应过程中的副产物6-甲基-1，4-萘醌未能加以彻底分离和利用。

There were different contamination conditions for different PAHs components in soils. Soils in urban area were severer contaminated by the height-weight-molecule PAHs than soils in agriculture area. However, there were the similar contamination level among different usages soils for the light-weight-molecule PAHs, such as naphthalene and methylnaphthalene.

不同种类的PAHs对不同利用类型土壤的污染情况也不相同，分子量较大的多环芳烃与总PAHs污染情况相似，表现为城市用地的污染程度要明显高于其它类型土壤；但分子量较小的组分，如萘和甲基萘，在不同利用类型土壤中污染程度相近。

Synthesis of β-methylnaphthoquinone without any catalyst in the CH_3COOH-H_2O_2 system by oxidation of β-methylnaphthalene is researched. We have discussed the feasibility of the technology.

在不添加任何催化剂的条件下，以冰醋酸为溶剂，用过氧化氢氧化β-甲基萘制取β-甲基萘醌。

The distillation process is simulated by using Aspen Plus with the DSTWU fractionation module and the NRTL property method results showed that 99.9% methylnaphthalene and almost 100% tritoluene could be recovered.

利用Aspen Plus化工模拟软件的DSTWU精馏模块对产物进行模拟运算。结果表明：采用NRTL物性方法的模拟计算结果能够满足工艺要求，甲基萘回收率可达99.9%，溶剂回收率可达100%。

Alkylation of methylnaphthalene and methanol over HZSM-5 zeolite can make 2, 6-dimethylnaphthalene (2, 6-DMN) and the product stream contains isomers of 2, 6-DMN and unreacted MN, which requires efficient separation.

以甲基萘和甲醇为原料，采用HZSM-5烷基化催化剂制取2，6-二甲基萘(2，6-DMN)。由于产物中含有2，6-DMN的异构体以及未反应的MN，需对反应产物进行有效分离。

At present, the oil washing process methods domestic uses are washing oil by removing phenol in alkali, removing pyridine and quinoline in acid, getting naphthalene oil, methylnaphthalene oil and heavy oil after distillation.

目前，国内普通采用洗油加工方法是洗油经碱洗脱酚、酸洗脱吡啶和喹啉，蒸馏得萘油、甲基萘油和重油。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了