查询词典 benzene

The adsorption isotherms of benzene and propene at different temperatures and 1× 10－3～5.0 kPa show that at low pressure and high temperature, the loadings of propene are significantly lower than those of benzene.

在压力范围1×10－3～5.0 kPa，不同温度下苯与丙烯在分子筛内吸附等温线的模拟结果表明，在较高温度、较低压力下丙烯的吸附量要小于苯的吸附量。

This paper reports the experimental equipment and technology parameter for the synthesis of diisopropylbenzene and triisopropylbenzene by catalytic alkylation between benzene and propene, the conversion of benzene is more than 98%,the selectivity of diisopropylbenzene and triisopropylbenzene is more than 40% and 36% respectively.

报道了苯与丙烯催化烷基化合成二异丙苯和三异丙苯的实验装置与工艺条件，苯的转化率达98%以上，二异丙苯的选择性≥40%，三异丙苯的选择性≥36%，经分离后可获得纯度≥95%的二异丙苯和三异丙苯产品，所提供的合成工艺基本上无污染，在国内外具有先进的技术。

It takes heavy alkyl benzene as source material to synthesize alkyl benzene sulfonic acid through SO 3 falling film sulfurization technique and neutralization and re allocation.

介绍了以抚顺洗化厂的重烷基苯为原料经切割筛选，采用SO3 降膜式磺化工艺合成出烷基苯磺酸，再经中和、复配，研制出了性能稳定的烷基苯磺酸盐。

The our company after relates in every way according to the above situation, already from overseas massively purchased the ZX-10 series desulphurization catalyst, has been able to coke with this catalyst technology the sulphonium compounds which the triphenyl contained, the nitrogen compound , the unsaturated compound and very many impurities, the fetid odor and so on removes, after the processing triphenyl always Sulfur content was lower than the petroleum benzene, the smell, the color, was consistent with the petroleum benzene.

目前焦化三苯在工业上使用范围小，销售价格也低于石油三苯。其主要原因是硫、噻吩等杂质含量高、气味重。而现在国际、国内焦化三苯、汽油、柴油等产品脱硫提纯去杂质的工艺均采用高压催化加氢法处理，该工艺设备投资巨大。根据以上情况我公司经多方联系，现已从国外大量购进ZX-10系列脱硫催化剂，用本催化剂技术已能将焦化三苯所含的硫化合物、氮化合物、不饱和化合物及很多杂质，臭味等脱除，处理后的三苯总硫含量低于石油苯，气味、颜色，均与石油苯一致。

Huapai products:pchlorophenol,ochlorophenol,2,4dichlorophenol,2,6dichlorophenol,2,4,5trichlorophenol,2,4,6trichlorophenol,4chloro2benzyl phenol,pbromophenol,2,4,6tribromophenol,1chloro4(1,1dimethyl ethyl) benzene ether,3bromoanisole,mbromofluorobenzene,2tetra hydrofuran,αbromo4chloro acetophenone,αbromo4methoxy acetophenone,4chloro benzophenone,4chloro2methylaniline,n(2hydroxyethyl)ethane diamine; n(2aminoethyl)ethanolamine,2,3dibromopropionyl chloride,4bromo benzene sulphonyl chloride,terephthaloyl chloride,isophthaloyl chloride,nchlorosuccinimide,nbromosuccinimide,pchloranil;tetrachloro1,4benzoquinone,5chloroisatin.

华派公司产品：对氯苯酚，邻氯苯酚，2，4二氯苯酚，2，6二氯苯酚，2，4，5三氯苯酚，2，4，6三氯苯酚，4氯2苄基苯酚，对溴苯酚，2，4，6三溴苯酚，对氯苯基叔丁基醚，间溴苯甲醚，间溴氟苯，α溴甲基四氢呋喃，α溴代4氯苯乙酮，α溴4甲氧基苯乙酮，4氯二苯甲酮，4氯2甲基苯胺，N(2羟乙基)乙二胺， 2，3二溴丙酰氯，对溴苯磺酰氯，对苯二甲酰氯，间苯二甲酰氯，N氯代丁二酰亚胺，N溴代丁二酰亚胺，四氯苯醌，5氯靛红。

In the third chapter, the photoabsorption of NO, CO, acetonitrile, acrylonitrile, benzene and toluene of benzene series have been measured by using a homemade experimental apparatus of cylindrical multi-stage ion chamber with high flux SR source. The ionization energies of some electron states are given. Their superexcited states, autoionization Rydberg states have been analyzed. By the analysis and comparison, our results are accurate and credibility.

在第三章中，利用高通量的同步辐射光源和自制的多级光电离吸收池装置，测量了NO、CO、乙腈、丙烯腈、苯系物中的苯和甲苯的光吸收谱，给出了部分电子态的电离能，分析了其中的自电离Rydberg态结构和一些振动能级，对部分结构做了精确指认，经过分析和比较，我们所得的结果比较精确和可靠。

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℃。

Based on an investigation of a certain waterhead region for pollution of organic chemicals, like oils and benzene, heath risk assessment of drinking water in the region was performed using the MMSOILS model, a multimedia exposure assessment model, with Benzene as a target contaminant.

以某水源地油和苯等有机污染调查为依据，利用多介质暴露评价模型，以苯为评价的目标污染物，分析烯烃厂不同分区的土壤苯污染对A地区造成的饮用地下水健康风险。

The results show that the perfect Honeycomb pattern films without defects within area of 0.8cm^2 can be obtained at the PS concentration ranges from 20 mg/mL to 50 mg/mL and PS/TEOS mass ratio less than 2. The films cast from the chloroform solution of dicarboxyl terminated PS were more perfect than those cast from the chloroform solution of monocarboxyl terminated PS. The perfect Honeycomb structure films could be obtained with both chloroform and benzene as solvents, but the pore diameter of films cast from benzene solution of PS was larger than that of films cast from chloroform solution of PS.

研究结果表明，聚合物浓度在20~50mg/mL，PS/TEOS质量比大于2：1的条件下可以制备结构完整的多孔膜，且制备的Honeycomb结构在0.8平方公分内无缺陷；采用双羧基封端的聚苯乙烯成膜效果好于单羧基封端的成膜效果；以氯仿和苯作为溶剂均可以制备完全Honeycomb结构的复合膜，但以苯为溶剂制备的多孔膜孔径较大。

1H NMR spectra of benzene, cyclohexane and n -hexane and 2H NMR spectra of benzene -d6 absorbed on four charcoals with different pore structures were measured at various temperatures in the range from 297 to 195 K.

本文观察了吸附在四种孔结构活性炭中苯，环已烷和正已烷的~1H NMR和笊代苯的~2H NMR谱线在297～195 κ温度范围内的变化。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。