芳烃

This paper generally reviews the developments of various hydrocarbon aromatization commercial technologies at home and abroad, discusses the problems of aromatic production technologies in China and provides some suggestions.

本文介绍了国内外芳烃生产技术的现状，探讨了我国芳烃生产技术存在的问题，并提出了一些解决问题的建议。

Catalytic activities of phosphotungstic acid for liquid-phase nitrations of benzene,toluene and chlorobenzene were studied.

研究了磷钨酸对苯、甲苯和氯苯液相硝化反应的催化活性，考察了反应温度、反应时间、硝酸与芳烃摩尔比对芳烃转化率和产物选择性的影响。

In addition, the low-temperature heat utilization in deaeration of desahed water and temperature elevation of deaerated water is explored on the basis of refinery system integration and optimization.

其次从炼油厂系统整合优化角度探讨除盐水在除氧环节以及除氧水在升温环节低温热利用的途径，通过技术改进和系统低温热利用相结合，探讨芳烃精馏塔实现回收低温热和消除装置瓶颈的可行性，提出利用区域除盐水集中升温除氧以及区域除氧水先集中升温再进汽包产汽的芳烃脱庚烷塔低温热利用方案，不仅能回收67％的低温热，产生的1.4MPa低压蒸汽（10t／h）还可代替连续重整装置脱已烷塔重沸器的中压蒸汽。

The results provided valuable references for studying microbiological degradation mechanism in the reactor, and enriched microbial resources of nitrogen-containing aromatic degrader.

研究结果为含氮芳烃废水处理研究提供了一些有价值的参考依据，并丰富了含氮芳烃废水降解菌资源。

A series of calix[6]arene derivatives have been synthesized and their performance as PTC in the fluorination of halogenated aromatic compounds has been studied.

本论文合成了一系列的杯[6]芳烃衍生物，并研究了其作为相转移催化剂用于卤代芳烃氟化反应的性能。

The calixarenes used as PTC in the fluorination of tetrachlorophthahaloyl chloride to obtain dimethyl tetrafluoroterephthalate were studied in this paper.

研究了杯芳烃在四氯对苯二甲酰氯氟化制备四氟对苯二甲酸二甲酯反应中的相转移催化作用，发现以杯芳烃作相转移催化剂使产品收率得到了明显提高。

Through annual monitoring in different domains and seasons,,we had a rudimentary grasp of changing law and composition of polycyclic aromatic hydrocarbon in the air of urban area.

通过全年按不同功能区、不同季节的监测，对市区空气中多环芳烃的组成和变化趋势有了初步的了解，定性检出57种多环芳烃。

Results showed that under the conditions of a reaction temperature of 60 ℃,a reaction time of 6 h and a catalyst consisted of 1.0% BF3-ether and 1.5% AlCl3,the yields of aromatic solvent naphtha and petroleum resin...

结果表明，采用两段聚合法，在催化剂三氟化硼乙醚络合物质量分数1.0%、三氯化铝质量分数1.5%、聚合温度60℃、聚合时间6h的条件下，芳烃溶剂油收率为71.1%，石油树脂收率最高可达20%；同时所得的芳烃溶剂油切割为120号和200号溶剂油，指标达到行业标准。

Only 2-4 ring PAHs were detected in gas phase, and phenanthrene was the most abundant with an average of 55.1% in total PAHs.

结果显示，气相中主要是2-4环的多环芳烃，其中菲为主要的化合物，平均占到总多环芳烃的55.1%。

With the reduction of SOM content and the elevation of contamination concentration, the difference between PHE and PYE decreases gradually, while B［a］PYE exhibits a significant difference from them. This could be attributed to the high lipophilicity and large molecular size of B［a］PYE, which make the molecule of B［a］PYE to be more easier to be held in the nanopores of clay and the dense region of SOM.

不同多环芳烃SPMD辅助解吸率差别很大，随着土壤有机质含量的降低，以及污染物浓度的提高，菲和芘的解吸差异逐渐缩小，而苯并［a］芘与上述2种多环芳烃的差异很大，主要是由于苯并［a］芘具有高度亲脂性，并且分子较大，造成其容易滞留在粘土的微孔及有机质的致密结构中。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。