甲基萘

Our main products are industrial naphthalene, light oil, phenol Dephenol oil, wash oil, anthracene oil, crude phenol, hard asphalt, restructuring asphalt, fuel oil,-Methylnaphthalene,-methyl naphthalene, quinoline, fluorene , acenaphthene and other products.

公司主要产品有工业萘、轻油、脱酚酚油、洗油、蒽油、粗酚、硬质沥青、改制沥青、燃料油、α-甲基萘、β-甲基萘、喹啉、芴、苊等产品。

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 adoption of azeotropic rectification can produce the β-methylnaphthalene product with β-methylnaphthalene content over 95%, meanwhile α-methylnaphthalene product also can be produced.

摘 要：对β-甲基萘生产进行了研究和试验，采用共沸精馏可以生产出含量大于95%的β-甲基萘产品，同时还可以生产出α-甲基萘产品。

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。

A series of long chain alkyl methylnaphthalene sulfonates, including hexyl methylnaphthalene sulfonate, octyl methylnaphthalene sulfonate, decyl methylnaphthalene sulfonate, dodecyl methylnaphthalene sulfonate, and tetradecyl methylnaphthalene sulfonate, was characterized by high performance liquid chromatography and electrospray ionization mass spectrometry. Through a great deal of testing, the analytical conditions were optimized.

采用反相离子对高效液相色谱和电喷雾离子化质谱对系列长链烷基甲基萘磺酸盐，包括己基甲基萘磺酸盐、辛基甲基萘磺酸盐、癸基甲基萘磺酸盐、十二烷基甲基萘磺酸盐、十四烷基甲基萘磺酸盐进行分析，通过液相色谱分离条件的优化，找到了最佳分析条件。

At the same time, some of the pyrolysates are the important favors in cigarette smoke, such as isophorone and megastigmatrienone, etc. The amounts of these pyrolystaes alter with the change of pyrolysis temperatures and the concentration of oxygen. the lutein is applied to cigarettes as flavoring.

分析结果表明，叶黄素的裂解产物主要是甲苯和对-二甲苯等苯及其同系物、1，2–二氢-1，1，6-三甲基-萘和2，7-二甲基萘等萘及其同系物，另外还生成氧化异佛尔酮和巨豆三烯酮等酮类物质和烯烃类物质等，这些物质随着裂解温度和裂解氛围的变化，其种类和峰面积归一化百分含量有所不同。

Dimethylnaphthalene is an ideal raw material of the production of polyethylene naphthalate. It is an important task to obtain 2,6-dimethyinaphthalene in low cost.

2，6-二甲基萘是制备高性能聚酯-聚对萘二甲酸乙二醇酯最理想的原料，如何低成本地获得2，6-二甲基萘已成为一项重要的课题。

The researching content was as follows: 1. When AlClx/HY zeolite be used as catalyst, the effects of the ratio of 2-methylnaphthalene to tetramethyl benzene, catalyst concentration, reaction temperature and reaction time on the conversion (based on 2-methylnaphthalene), yield and selectivity (both based on 2,6-DMN) were discussed. In addition, by orthogonal experiment, the optimum reaction conditions were determined at the same time. The optimum reaction conditions : the molar ratio of 2-methylnaphthalene and tetramethyl benzene =1:1, reaction temperature was 400℃.

具体研究如下： 1、以AlClx/HY型分子筛为催化剂，研究原料配比(2-甲基萘与均四甲苯的摩尔比)、反应温度和反应时间对2-甲基萘的转化率、目的产物2，6-DMN的收率和选择性的影响，并通过正交实验确定了该催化剂体系下的最佳反应条件为：原料的摩尔比为(2-甲基萘：均四甲苯)=1：1，反应质量空速为6h-1，反应温度为400℃。

The experimental results indicated that the yield of 2,6-DMN can reach above 38%, when the usage of dimethylnaphthalene was 2g, the temperature reached 18℃, the reaction time was 2.5h, the mole ratio of water-free aluminum trioxide to dimethylnaphthalene was 0.8, the mole ratio of transmethylation agent tetramethylbenzene to dimethylnaphthalene was 1.0, the usage of methane trichloride was 15mL.

结果表明，2-甲基萘(2-MN)使用量为2g时，反应温度为18℃、时间为2.5h、n：n（2-甲基萘）=0.8、n：n（2-甲基萘）=1.0、二氯甲烷用量为15mL时，2，6-DMN的收率可达38%。

Through the measurement of liquid-liquid equilibrium of DMSO-multicomponent heavy aromatics-tetradecane system, it was found that the concentration of trimethylbenzene and 1-methylnaphthalene had more effects on the distribution coefficient of other aromatics than that of the naphthalene and 2-methylnaphthalene.

用单一溶剂DMSO对多组分混合芳烃进行了萃取实验，发现在混合重芳烃中，三甲苯和1-甲基萘的浓度对其它芳烃分配系数的影响大于萘、2-甲基萘等对分配系数影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。