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aromatics
相关语句
  芳烃
     Sulfur-tolerance of Highly Dispersed Pd(-Pt)/H-Y Catalysts for Aromatics Hydrogenation
     高分散Pd(-Pt)/H-Y催化剂的芳烃加氢抗硫性能研究
短句来源
     AROMATICS BY PLATFORMING
     铂重整法制造芳烃的研究
短句来源
     Adsorption Equilibria of C_8 Aromatics in Dietylbenzene
     二乙苯溶液中C_8芳烃的吸附平衡
短句来源
     Separation of Aromatics from Complex Hydrocarbon Mixtures by N,N-Bis (α-cyanoethyl)formamide Silica Coated Capillary Column
     N,N-双(α-氰乙基)甲酰胺键合硅胶涂层毛细管柱用于烷、烯烃中芳烃的分离
短句来源
     DETERMINATION OF THE INTERACTION PARAMETER OF BENZOPHENONE WITH DIPHENYLAMINE AND THE MOLECULAR COMPLEX CONSTANTS OF BENZO-PHENONE WITH AROMATICS BY GAS-LIQUID CHROMATOGRAPHY
     气液色谱法测定二苯甲酮与二苯胺的相互作用参数及二苯甲酮与某些芳烃的分子络合常数
短句来源
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  香料
     Synthesis methods of some aromatics such as dimethylbenzyl carbinol,4-methyl-3-decene-5-ol,1-octene-3-ol,8-allyl-8-hydroxytricyclo[5,2,1,02,6]decane by Grignard reaction were summarized in the paper using supersonic wave as revulsant.
     以超声波为引发条件,引发制备格氏试剂,从而制备几种香料:二甲基苄基原醇、4-甲基-3-癸烯-5-醇、1-辛烯-3-醇、8-烯丙基-8-羟基三环[5,2,1,02,6]癸烷。
短句来源
     Study on the preparation of slow released aromatics from Citral and Benzyl Chloride
     柠檬醛与苄氯制备缓释性香料的研究
短句来源
     Synthesis of Aromatics by Grignard Reaction with Supersonic Wave as Revulsant
     超声波引发格氏反应制备几种香料
短句来源
     2,5-dimethyl-4-hydroxy-2,3 -dihydro-3-furanone which is called pineapple-ketone is widely used as a perfume in food, drink, ice-cream and cigarette products with strong caramel odour and weak broad bean flower smell. Swiss Firmenich Aromatics Co. , Ltd.
     2,5-二甲基-4-羟基-2,3-二氢呋喃-3-酮即菠萝酮,是一种具有很强烈的焦糖样甜香、略带淡的蚕豆花香气息的香料,可广泛应用于食品、饮料、冰淇淋、香烟等产品中。
短句来源
     The application of pyridine bases in the field of pharmaceuticals, pesticide, aromatics, rubber, and dyestuff are introduced.
     介绍了吡啶碱类化合物在医药、农药、香料、橡胶和染料等领域的应用。
短句来源
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  芳香族化合物
     Using backpropagation artificial neural network to study the structure-activity relationship between aromatics compounds and rat LD_(50)
     BP人工神经网络用于芳香族化合物结构参数和大鼠LD_(50)构效关系研究
短句来源
     Research progress of synthesis of fluorinated aromatics by halogen-exchange
     卤素交换氟化合成含氟芳香族化合物研究进展
短句来源
     The Measurements on Heat of Mixing for Systems Containig Aromatics by Dynamic Microcalorimeter
     用动态型微量热计测量含芳香族化合物体系的混合热
短句来源
     Research advances in selective alkylation of aromatics
     芳香族化合物选择性烷基化的研究进展
短句来源
     93 compounds including 75 aliphatics, 13 aromatics (predominately comprised by acyl phthalate derivatives) and 5 alkaloids were identified in E 1 ~E 5 , among which the total content of aromatic compounds in E 5 was observed to be 24.943%, much higher than those in E 1 ~E 4 . On inhibition of acute inflammation, the 5 fractions presented obvious enhancement on phagocytic activity of RES and inhibition of vascular permeability.
     E1~E5共检测出93种化合物,其中脂肪族化合物 75 种,芳香族化合物 13 种(主要为邻苯二甲酸酯衍生物),生物碱类化合物5种。
短句来源
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  “aromatics”译为未确定词的双语例句
     ZEOLITE-CATALYZED FRIEDEL-CRAFTS ACYLATION OF AROMATICS: I. SYNTHESIS OF 4-ACYL ANISOLE WITH A HY CATALYST
     ZEOLITE-CATALYZED FRIEDEL-CRAFTS ACYLATION OF AROMATICS:I》.SYNTHESIS OF 4-ACYL ANISOLE WITH A HY CATALYST
短句来源
     ZEOLITE-CATALYZED FRIEDEL-CRAFTS ACYLATION OF AROMATICS:Ⅲ.SYNTHESIS OF 4-ACYL ANISOLE WITH USY CATALYST
     ZEOLITE-CATALYZED FRIEDEL-CRAFTS ACYLATION OF AROMATICS∶Ⅲ.SYNTHESIS OF 4-ACYL ANISOLE WITH USY CATALYST
短句来源
     Zeolite-Catalyzed Friedel-Crafts Acylation of Aromatics.Ⅳ.Nature of the Active Sites of Zeolites
     Zeolite-Catalyzed Friedel-Crafts Acylation of Aromatics.Ⅳ.Nature of the Active Sites of Zeolites
短句来源
     SVOCs mainly embrace PAHs, esters, mononuclear aromatics, halogenated hydrocarbons, phenols, ethers and pesticides whose mass concentration ranges are 0.005 ~ 3.02, 0.535 ~ 1.714, 0.018 ~ 1.256, 0.02 ~ 0.212, 0.008 ~ 0.610, 0.01 ~ 0.860 and 0.009 ~ 0.127μg/L respectively.
     SVOCs主要包括多环芳烃类、酯类、单环芳香族类、卤代烃类、酚类、醚类和农药类,其质量浓度范围分别为0.005~3.02,0.535~1.714,0.018~1.256,0.02~0.212,0.008~0.610,0.01~0.860和0.009~0.127μg/L。
短句来源
     Among them alcohols are 58.7%, aromatics are 37.7%.
     其中醇类溶剂占58.7%,芳烃类占37.7%。
短句来源
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  aromatics
The influences of impurities such as di-olefins and non-benzene aromatics on the catalytic activity and stability should be studied further.
      
Kinetic model for hydroisomerization reaction of C8-aromatics
      
The olefins (olefins with C atom number above 4) content of FCC gasoline was markedly reduced, and the aromatics content and octane number were increased.
      
Some polycyclic aromatics such as anthracene, pyrene and phenanthrene were also produced over the plasma treated catalyst, in addition to benzene, toluene and naphthalene, which were normally obtained over the untreated catalyst.
      
Up to 148 VOC species, including C3 to C12 alkanes, C3 to C11 alkenes, C6 to C12 aromatics, and halogenated hydrocarbons, were quantified.
      
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A modified method is described for the analysis of straight run gasoline and Fisher-Tropsch gasoline with the aid of calibration curves.This method can be satis- factorily applied to samples with aromatics or olefin content below 15% by volume. Carrier displacement technique is recommended for the separation of saturated hydrocarbon and aromatics at low temperatures using normal pentene as carrier. This method is more efficient than the conventional pentane elution technique. A method for the analysis...

A modified method is described for the analysis of straight run gasoline and Fisher-Tropsch gasoline with the aid of calibration curves.This method can be satis- factorily applied to samples with aromatics or olefin content below 15% by volume. Carrier displacement technique is recommended for the separation of saturated hydrocarbon and aromatics at low temperatures using normal pentene as carrier. This method is more efficient than the conventional pentane elution technique. A method for the analysis of ordinary cracked gasoline is also suggested.

本文介绍用新的校正曲线进行烷-芳烃二元系(直馏汽油)和烷-烯二元系(费托合成汽油)的分析.误差分别为0.2%与0.5%(体积).用戊烯为夹带剂可以有效地将烷-芳烃混合物分离.试验应在较低温度下进行以避免烯的聚合.根据所提出的经验公式,可以进行与一般低芳烃含量的裂化汽油组成相近的烷、烯、芳烃三元系的分析.误差在1%以下.

The aromatization of a C_8-C_9 fraction (105—155℃)of Fischer-Tropsch naphtha over chromia-alumina catalyst at various temperatures and space velocities has been investigated. At 500℃ and LHSV 0.43, the once-through total conversion is 84%, and the yield of aromatics is about 60% (based on feed stock). Under these conditions, about 37% (based on feed stock) of xytene-ethylbenzene fraction is obtained, which consists mainly of ethylbenzene and o-xylene. On regeneration, over 93% of coke-deposition can be...

The aromatization of a C_8-C_9 fraction (105—155℃)of Fischer-Tropsch naphtha over chromia-alumina catalyst at various temperatures and space velocities has been investigated. At 500℃ and LHSV 0.43, the once-through total conversion is 84%, and the yield of aromatics is about 60% (based on feed stock). Under these conditions, about 37% (based on feed stock) of xytene-ethylbenzene fraction is obtained, which consists mainly of ethylbenzene and o-xylene. On regeneration, over 93% of coke-deposition can be easily burned off, but a small amount of coke remains unburned, and shows no significant effect on the activity of catalyst. The C_8-C_9 fraction used contains 13% of olefins. Removal of the olefins from it decreases the coke formation rate, and increases the aromatic content in the liquid product.

本文作者在不同溫度、不同空間速度的條件下,進行了合成油八碳寬餾分在鉻催化劑(K_2O-Cr_2O_3-Al_2O_3)上的轉化,探索了生成各種二甲苯異構物及乙基苯的較好條件。實驗證明,這種由中國科學院石油研究所用於合成油七碳餾分芳烴化的鉻催化劑對八碳寬餾分芳烴化反應的活性是很高的。

In order to investigate the effect of operating variabls on the yield of aromatics,a certain fraction of a straight run gasoline containing 48.4% (wt.)naphthenes was catalytically converted into aromatics over a bed of 100 ml 14—20 mesh,granular,platforming catalyst under various opera- ting conditions.The ranges of these investigations were:temperature 430— 510℃,pressure 20—50 atm.,WHSV 1.58—6.32 and hydrogen-oil molar ratio 4:1—10:1.The single pass fresh hydrogen process was adopted. The result...

In order to investigate the effect of operating variabls on the yield of aromatics,a certain fraction of a straight run gasoline containing 48.4% (wt.)naphthenes was catalytically converted into aromatics over a bed of 100 ml 14—20 mesh,granular,platforming catalyst under various opera- ting conditions.The ranges of these investigations were:temperature 430— 510℃,pressure 20—50 atm.,WHSV 1.58—6.32 and hydrogen-oil molar ratio 4:1—10:1.The single pass fresh hydrogen process was adopted. The result of data treatment implied that the following second-order reaction rate expression correlates the aromatics production rate r with the operating variables satisfactorily. r=r_0(1-bx)~2, where x=aromatics yield based on feed(wt.%),and r_0 and b are constants. Superfacially r_0 may be regarded as the reaction rate constant,whereas b as a stochiometric coefficient of the equivalent kinetic equation.Both are functions of the operating temperature,pressure and hydrogen-oil molar ratio. For 4:1 hydrogen-oil molar ratio,which seems to be one of the most promising operating conditions,the differential and integral forms of the rate equation for aromatics yield are as follows: The apparent activation energy of the aromatics yield reaction by platforming under the conditions investigated,therefore,equals to 33,500 cal/gm-mol.The values of b at isobaric conditions may be correlated as: In b_(50)=8200/RT-17.5/R The significance of b is discussed thermodynamically. Considerable variations,though not large,in aromatic yield were observed when the hydrogen-oil molar ratio changed from 4:1 to 10:1.For example,at 30 atm.,490℃,this effect may be expressed by r=(p/186p+144)×10~5(1-bx)~2, where p=partial pressure of the feed stock,atm. Besides,the relative initial rates of C_8 aromatics,toluene and benzene formation were found to be in the increasing order of their molecular weights.Thus under certain operating conditions the initial rate of C~8 aromatics formation was 2.5 times that of the toluene initial formation rate,and 20 times that of the benzene formation rate.

用直馏汽油的某一馏分在装有100毫升14—20筛眼颗粒形铂重整催化剂的反应设备中,进行单程纯氢操作的铂重整反应条件试验以考察芳烃的生成与反应条件变化的关系.试验的反应条件为:溫度430—510°压力20—50大气压,空间流速1.58—6.32重量/重量/小时,氢油分子比4:1—10:1.处理所获试验数据的结果,发现芳烃生成速度γ可用下列二次反应式来关连:

 
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