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氧分子的
相关语句
  molecular oxygen
    Research emphasis is placed on the designing of efficient catalysts that can increase the reaction activity and selectivity of molecular oxygen and catalyze the selective reaction under mild conditions.
    研究的重点都是放在催化剂的设计上,通过催化剂来提高氧分子的反应活性和选择性,使选择性氧化反应能在温和的条件下进行。 从产业化应用的需要出发,发展既有活性、选择性又稳定、可循环的多相催化剂是当前面临的重大挑战。
短句来源
    Using Molecular Orbital Method we have studied the structure of three spinisomers( ̄3∑ ̄-_g, ̄1△_g, ̄1∑ ̄+_g) about molecular oxygen and its reaction activity.
    本文用MO法研究氧分子的 ̄3∑ ̄-_g、 ̄1△_g和 ̄1∑ ̄+_g三种自旋异构体的结构以及它们的反应活性,并对其进行理论分析。
短句来源
  “氧分子的”译为未确定词的双语例句
    Activation of Dioxygen and Reactions of Activated Oxygen Species under Mild Conditions
    温和条件下氧分子的活化和活性氧种的反应
短句来源
    The Oxidative Dehydrogenation of 1-Methyl-3,5-Diphenyl- pyrazoline Catalyzed by Cupric Chloride (Ⅱ)——Stoichiometric Reaction and the Stage of Reaction with Oxygen's Participation
    1-甲基-3,5-二苯基吡唑啉在氯化铜催化下的氧化脱氢反应(Ⅱ)——计量反应与氧分子的作用阶段
短句来源
    The Synthesis and Dioxygen-affinity of N, N'-Ethylene Bis(2-hydroxy-3-methoxy-5-methylphenylmethylidene-iminato) Cobalt (Ⅱ) and Its Analogues
    N,N′-双(2-羟基-3-甲氧基-5-甲基苯甲叉基)乙二胺合钴(Ⅱ)类似物的合成及其对氧分子的加合性能
短句来源
    The reaction mechanism of O(\{\}\+3P)+O\-2HOH+O\-2 has been studied by using Density Function Theory.
    用密度泛函理论方法研究了 O( 3P)与 O2 H反应生成羟基和氧分子的反应机理 .
短句来源
    Singlet oxygen is a special form in existence,which is strongly bioactive.
    单线态氧是氧分子的一种特殊存在形式,具有很强的生物活性。
短句来源
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  molecular oxygen
Degradation of TS by both free and immobilized cells was associated with molecular oxygen consumption (molar ratio 1 : 2).
      
Oxygen species are formed by purely physical mechanisms, for instance, energy consumption converts molecular oxygen to an excited singlet state.
      
Molecular oxygen is hardly toxic for prokaryotes due to an efficient protection of microbial cells by specific enzymes.
      
This work experimentally confirms the harmlessness of molecular oxygen.
      
Both the observed processes have been assigned to the bimolecular oxygenation of α- and β-subunits of the native tetrameric protein by molecular oxygen.
      
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The potential curves and potential surfaces between the oxygen atom or oxygen molecule and several silver clusters representing different sites on Ag(111) surface have been calculated by EHMO method. The conclusion is: When the Ag (111) surface chemisorbs oxygen in the range of 150 to 250C, the most probably adsorbed site on this surface is the eclipsed site, the valence state of the adsorbed species is O-.Such a monoatomic oxygen is formed when the dissociative adsorption of the oxygen molecule at the eclipsed...

The potential curves and potential surfaces between the oxygen atom or oxygen molecule and several silver clusters representing different sites on Ag(111) surface have been calculated by EHMO method. The conclusion is: When the Ag (111) surface chemisorbs oxygen in the range of 150 to 250C, the most probably adsorbed site on this surface is the eclipsed site, the valence state of the adsorbed species is O-.Such a monoatomic oxygen is formed when the dissociative adsorption of the oxygen molecule at the eclipsed site takes place. The adsorption of diatomic oxygen cannot take place on Ag(111) surface, it probably takes place only on single Ag atom (or some other highly dispersed silver on carrier or special silver whose character is similar to that of the single Ag atom), the valence state of the adsorbed species is O2-.

本文应用EHMO法计算了氧原子、氧分子和若干代表Ag(111)表面上不同位置的银原子簇间的位能曲线或位能面。结果表明:在150~250℃间,Ag(111)表面化学吸附氧时,最可能的吸附位置是叠位,被吸附物的价态为O~-。这种单原子氧是氧分子在叠位发生解离吸附所形成。在Ag(111)表面上,不形成双原子氧吸附,它可能只发生在单个Ag原子(或某些高度分散的载体银或特殊的晶体银,其特性类似单个Ag原子)上,被吸附时的价态为O_2~-。

The values of the fluorescence quenching rate constants kq, for 9, 10-dicyanoanthra-cene (DCA) and 9-cyanoanthracene (CNA) in different solvents by a series of compounds were determined and the exciplex emission was observed for the DCA/2, 5-dime-thylfuran system. A plot of kq vs. calculated free energy change AG gave a very good correlation with the theoretical line calculated by Rehm and Weller for an electron-transfer process. Solvent polarity and solvent viscosity has great influence upon fluorescence quenching...

The values of the fluorescence quenching rate constants kq, for 9, 10-dicyanoanthra-cene (DCA) and 9-cyanoanthracene (CNA) in different solvents by a series of compounds were determined and the exciplex emission was observed for the DCA/2, 5-dime-thylfuran system. A plot of kq vs. calculated free energy change AG gave a very good correlation with the theoretical line calculated by Rehm and Weller for an electron-transfer process. Solvent polarity and solvent viscosity has great influence upon fluorescence quenching reactions: For strong electron donors the main factor which influences the kq, values is the solvent viscosity and the qk values of weak electron donors depend strongly on solvent polarity. The kq of oxygen molecule coincide with the solvent diffusion rate constants kdiff.

本文测定了在不同溶剂中一系列化合物以及氧分子对9,10-二氰基蒽(DCA)及9-氰基蒽(CNA)的荧光淬灭常数k_q值及DCA与2,5-二甲基呋喃的激基复合物的发射光谱。这些化合物的k_q值与计算所得自由能的变化△G之间的关系基本符合Rehm-Wdler关系。溶剂极性及溶剂粘度对荧光猝灭反应有影响,影响强电子给体k_q值的主要因素是溶剂的粘度,而弱电子给体的k_q值则主要决定于溶剂的极性。氧分子的k_q值基本上与溶剂扩散速率常数走k_(diff)值吻合。

The authors believe that the phenomenological kinetic principle obt-ained from several catalytic oxidation reaction of hydrocarbons basedupon the Redox mechanism has revealed the intrinsic relationship betweenreaction order and the fraction of surface covered with oxygen speciesand between reaction order and the rate-controlling step among the hig-her and lower temperature ranges.According to this assumpion,the authors have provided a mechan-ism interpretation on the tortuous-type Arrhenius curve acquired in...

The authors believe that the phenomenological kinetic principle obt-ained from several catalytic oxidation reaction of hydrocarbons basedupon the Redox mechanism has revealed the intrinsic relationship betweenreaction order and the fraction of surface covered with oxygen speciesand between reaction order and the rate-controlling step among the hig-her and lower temperature ranges.According to this assumpion,the authors have provided a mechan-ism interpretation on the tortuous-type Arrhenius curve acquired in thekinetics observation of oxidation dehydrogenation of butene-2 over thepolymolybdate catalyst and they have derived a power rate law for thedifferent regions of reaction temperature.

作者认为烃类催化氧化反应按照 Redox 机理进行时,给出的动力学唯象规律,揭示了反应级数与氧分子的表面复盖度以及高、低温区表面反应控速步骤与反应级数之间的内在联系。据此,作者为在多元钼酸盐催化剂上进行的丁烯-2氧化脱氢动力学考察中,所获得的折线型 Arrhenius图,提供了合理的机理解释和表征不同温度范围动力学规律的幂式速率方程.

 
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