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还原硝基
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  reduction of nitro
     Synthesis of p-Chloroaniline by Selective Reduction of Nitro Group with Hydrazine Hydrate in the Presence of Fe-Al Complex Catalyst
     Fe-Al复合催化剂催化水合肼选择性还原硝基制备对氯苯胺
短句来源
     p-Chloroaniline was synthesized from p-chloronitrobenzene by selective reduction of nitro group with hydrazine hydrate in the presence of Fe-Al complex catalyst.
     以对氯硝基苯为原料,用Fe-Al复合催化剂催化水合肼选择性还原硝基制备对氯苯胺。
短句来源
     The electrochemical technology for reduction of nitro compounds to corresponding amines meets with the trend of green chemistry and the demand of sustainable development, and will have a promising prospect in fine chemical field.
     采用电化学方法还原硝基化合物制备氨基化合物符合绿色化学发展的趋势,满足可持续发展要求,在精细化工领域具有良好的应用前景.
短句来源
  “还原硝基”译为未确定词的双语例句
     2,9,16,23-tetraamino metal-phthal ocyanines(Fe, Co, Ni) were obtained by reducing the corresponding tetranitro- metal-phthalocyaines in 40.71%,39.52%and71.43% yield, respectively.
     用Na_2S还原硝基化合物分别得到相应的2,9,16,23-四氨基酞菁化合物(Fe,Co,Ni),收率分别为40.71%,39.52%和71.43%。
短句来源
     On the other hand, treating LT12cells with 1000 kU·L-1 of rmGM-CSF for 8 d inliquid culture resulted in 6±s 1% of nitrobluetetrazolium positive LT12 cells.
     此外,还观察到大鼠急性白血病LT12细胞经rmGM-CSP(1000kU·L-1)处理8d后,6±s1%的细胞显示具有还原硝基篮四氮唑的能力。
短句来源
     The nitroblue tetrazolium(NBT)reduction by neutrophil was significantly higher(P<0 01)than that in the control group on days after injection.
     给药后 ,嗜中性白细胞还原硝基蓝四氮唑 (NBT)能力极显著升高 (P <0 0 1) ;
短句来源
     The results showed that the selectivity of the catalytic reaction is over 99%.
     结果表明:Fe-Al复合催化剂催化水合肼还原硝基的选择性≥99%;
短句来源
     A series of amino diphenyl ethers were synthesized from corresponding nitryl diphenyl ethers with yields over 70% using Na_2S as a redutant. The products were characterized by IR, 1H NMR and MS.
     用Na2 S还原硝基二苯醚类化合物 ,成功地合成了一系列氨基二苯醚类化合物 ,产率在 70 %以上 ,产物结构经IR ,1HNMR和MS表征。
短句来源
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  相似匹配句对
     Electrochemical Reduction of Nitroanisole
     硝基苯甲醚的电化学还原研究
短句来源
     Photocatalytic Reduction of Nitro Compound in Quartz Glass Reactor
     石英反应器中硝基物的光催化还原
短句来源
     Reduction of Phenomenology
     现象学的还原
短句来源
     The Returning of the Original Condition of “Idea-Image”
     “意象”的还原
短句来源
     Nitro-cellulose wood coatings
     硝基木器漆
短句来源
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  reduction of nitro
Reduction of nitro-substituted compounds by native and immobilizedEscherichia coli cells
      
Reduction of nitro-substituted compounds, 1,4-benzodiazepine-2-ones, dibenzo[b,f]-1,4-diaz-epines, quinolones, and quinoxalinones, byEscherichia coli cells was studied.
      
Methods for microbiological reduction of nitro compounds and immobilization ofEscherichia coli cells into carrageenan and its modified forms were elaborated.
      
The photooxidation of organic azides and the photochemical reduction of nitro compounds include the formation of a common intermediate: the adduct of a nitrene with oxygen.
      
The activity of isozymes was assayed by reduction of nitro blue tetrazolium.
      
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Metal phthalocyanine-sensitized photoreduction of dimethyl 4-nitrophthalate by ascorbic acid has been investigated. The primary photo-reaction products are the corresponding amino- and hydroxylamino-compounds. The azoxy-compound is formed by coupling of the nitroso-compound with hydroxylamino-compound in the presence of air through secondary dark reaction. The redox potential and fluorescence quantum yield are also determined. The variation of the quantum yield for the sensitized photoreduction, the relative...

Metal phthalocyanine-sensitized photoreduction of dimethyl 4-nitrophthalate by ascorbic acid has been investigated. The primary photo-reaction products are the corresponding amino- and hydroxylamino-compounds. The azoxy-compound is formed by coupling of the nitroso-compound with hydroxylamino-compound in the presence of air through secondary dark reaction. The redox potential and fluorescence quantum yield are also determined. The variation of the quantum yield for the sensitized photoreduction, the relative fluorescence quantum yield and their product with the concentration of nitrocompound has been examined. The efficiency of photoreduction sensitized by the singlet and triplet excited states of metal phthalocyanine has also been calculated. It is believed that electron transfer from the excited metal phthalocyanine to the nitro-compound is initial process in the sensitized photoreduction. Quenching by electron transfer involves creation of an ion pair. Charge separation and back electron transfer is then a competitived process. Due to the spin selection rules, the efficiency of photoreduction sensitized by triplet-excited metal phthalocyanine is higher than that sensitized by singlet-excited state. Thus, a necessary requirement for a good sensitizer is that the triplet state is populated in high yield. An alternative way and also the intention of our work is to design a suitable phthalocyanine skeleton to overcome geminate recombination of the ion pair in order to increase the efficiency of photoreduction sensitized by singlet-excited state of the sensitizer, so as to increase the quantum yield of the total sensitized photoreduction.

本文研究了各种金属酞菁以及带有不同取代基的锌酞菁敏化光还原硝基化合物的反应。确定了光敏还原反应的主要产物是氨基和羟氨基化合物;羟氨基化合物与亚硝基化合物通过暗反应缩合生成偶氮N-氧化物。测定了它们的氧化还原电位和荧光量子产率。从敏化光还原反应的量子产率及荧光猝灭与硝基化合物浓度的依赖关系,计算出各种金属酞菁激发单重态与三重态的敏化效率。受激发金属酞菁将电子转移至硝基化合物是敏化光还原反应的起始过程。电子转移生成离子自由基对后,电荷分离与逆电子转移过程相互竞争。由于自旋选择规则的限制,激发三重态的敏化效率一般比激发单重态的敏化效率高。为了提高敏化光还原反应的效率,除选择三重态产率较高的敏化剂外,改变敏化剂的结构可提高敏化剂激发单重态的敏化效率,从而提高敏化光还原反应的量子产率.

Authors use TLC/CS-910 thin layer scanning technique to determine the isomer constitution of dinitrodiphenic acid quantitatively. The yield of nitration by three different methods and the data of isomer distribution are given. The nitrocompound obtained is reduced by Fe/NH4Cl method. The reducing product is monoamine and diamine with 72 % yield. Based on the characteristic of mo- noamine with strong fluorescence, this paper has analyzed the content of mo- noamine and diamine by diazotization method combined...

Authors use TLC/CS-910 thin layer scanning technique to determine the isomer constitution of dinitrodiphenic acid quantitatively. The yield of nitration by three different methods and the data of isomer distribution are given. The nitrocompound obtained is reduced by Fe/NH4Cl method. The reducing product is monoamine and diamine with 72 % yield. Based on the characteristic of mo- noamine with strong fluorescence, this paper has analyzed the content of mo- noamine and diamine by diazotization method combined with fluorimetry.

采用TLC /CS-910薄层扫描技术定量测定二硝基联苯二甲酸的异构体组成,给 出三种不同硝化方法的收率及异构体分配数据。用Fe/NH4Cl法还原硝基物得到单 胺和双胺,收率72%.根据单胺具有强烈荧光的特点,采用重氮化法和荧光分光光 度法相结合,测出混合胺中的单胺与双胺合量分别为22.54%和67.22%,其余是无 机盐。

NiO/SiO2 and NiO/( La2O3+SiO2 ) samples are prepared by impregnation method, and the interactions between different component and supports are studied using XRD, FT-IR and SAXS.

用X射线衍射分析、FT-IR、小角X光散射等方法研究了浸渍法制备的NiO/SiO_2和NiO/(La_2O_3+SiO_2)样品中组分之间的相互作用。La_2O_3在SiO_2上可形成近乎密置单层的分散。在负载了La_2O_3的SiO_2上,NiO的分散程度比在SiO_2上有明显提高,也更容易被还原,而且还原后所得金属镍粒子的平均粒度降低,小粒子所占百分比提高。这些结果表明,NiO/(La_2O_3+SiO_2)比NiO/SiO_2样品具有更高的加氢还原硝基普鲁卡因为胺基普鲁卡因的活性,与Ni/(La_2O_3+SiO_2)比Ni/SiO_2活性高的情形相一致。

 
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