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氧分子的活化
相关语句
  activation of dioxygen
     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
     A Quantum Chemical Investigation on the Activity Order of Coordination Catalysis of Transition Metals(Ⅲ) ─Activation of Dioxygen
     过渡金属络合催化活性顺序的量子化学研究(Ⅲ)─对氧分子的活化
短句来源
  “氧分子的活化”译为未确定词的双语例句
     A QUANTUM CHEMICAL INVESTIGATION OF ACTIVITY ORDER OF COORDINA TION CATALYSIS OF TRANSITION METALS(iii)—ACTIVATION OF MOLECULAR OXYGEN
     过渡金属络合催化活性顺序的量子化学研究(Ⅲ)—对氧分子的活化
短句来源
     In this paper, activity problems of transition metals for molecular oxygen were studied by quantum chemical method, combining HMO with EHMO and CNDO.
     本文用我们自已建立的以HMO为主的量子化学方法研究了过渡金属对氧分子的活化问题。
短句来源
     It is suggested that the oxygen vacancies of perovskite-type catalysts are the sites reponsible for oxygen activation,and the adsorbed oxygen species on the surface of catalysts are the main active species for OCM reaction. The adsorbed oxygen species that desorped at higher temperature are in favor of increase of C2 selectivity for OCM.
     认为低价离子掺杂所产生氧空位为氧分子的活化提供了活性位 ,表面吸附态氧物种为OCM反应主要活性氧物种 ,较高温度脱附的吸附氧有利于甲烷氧化偶联C2 选择性的提高。
短句来源
  相似匹配句对
     Activation of Dioxygen and Reactions of Activated Oxygen Species under Mild Conditions
     温和条件下分子的活化和活性种的反应
短句来源
     Pulsed Oxygen Activation Logging Technique.
     脉冲活化测井技术
短句来源
     Increasing Oxygen Machine with Gathering Oxygen of Activation and Aeration
     聚活化曝气增
短句来源
     A QUANTUM CHEMICAL INVESTIGATION OF ACTIVITY ORDER OF COORDINA TION CATALYSIS OF TRANSITION METALS(iii)—ACTIVATION OF MOLECULAR OXYGEN
     过渡金属络合催化活性顺序的量子化学研究(Ⅲ)—对分子的活化
短句来源
     A Quantum Chemical Investigation on the Activity Order of Coordination Catalysis of Transition Metals(Ⅲ) ─Activation of Dioxygen
     过渡金属络合催化活性顺序的量子化学研究(Ⅲ)─对分子的活化
短句来源
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  activation of dioxygen
The increase in the heat of copper-acetic acid reaction caused by mechanical treatment is due to the activation of dioxygen involved in this reaction.
      
Life as aerobes: are there simple rules for activation of dioxygen by enzymes
      
In no instance, thus far, has evidence been found for a direct coupling of proton to electron transfer in the reductive activation of dioxygen.
      
Activation of dioxygen by dicopper(I) complexes and characterisation of dicopper(II
      
Activation of dioxygen on dicopper(I) centres was systematically investigated using a group of open-chain and a macrocyclicm-xylyl-based dinucleating ligand from a bioinorganic viewpoint.
      
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In this paper, activity problems of transition metals for molecular oxygen were studied by quantum chemical method, combining HMO with EHMO and CNDO. As a result, it not only can discuss the catalytic activity series of transition metals and the effects of ligand and coordination mode on the catalytic activity, but also can discuss the regularity in the change of catalytic activity of the transition metal with the reagent molecule and the relation between structure and properties of the oxygen carriers in reversibly...

In this paper, activity problems of transition metals for molecular oxygen were studied by quantum chemical method, combining HMO with EHMO and CNDO. As a result, it not only can discuss the catalytic activity series of transition metals and the effects of ligand and coordination mode on the catalytic activity, but also can discuss the regularity in the change of catalytic activity of the transition metal with the reagent molecule and the relation between structure and properties of the oxygen carriers in reversibly combining with the molecular oxygen.

本文用我们自已建立的以HMO为主的量子化学方法研究了过渡金属对氧分子的活化问题。研究结果表明,它不仅可以讨论过渡金属对氧分子的催化活性顺序以及络合方式和配位体对催化活性的影响,而且可以讨论过渡金属的催化活性随底物分子迁移的规律以及可逆载氧体的结构和性能之间的关系。

A silica supported catalyst, CoSalen (Co(Ⅱ) complex of bis(salicylideneethylene diamine)) coordinated with chitosan (SiO 2 CS CoSalen), was prepared. The chitosan film coated on the silica surface was characterized through elemental analysis, IR, fluorescence spectrophotometry, ESR and XPS. It is found that the coordination is realized through binding of N in chitosan with the Co(Ⅱ) in CoSalen complex. Because the site isolation effect present in CS CoSalen may inhibit the formation of dimers and μ ...

A silica supported catalyst, CoSalen (Co(Ⅱ) complex of bis(salicylideneethylene diamine)) coordinated with chitosan (SiO 2 CS CoSalen), was prepared. The chitosan film coated on the silica surface was characterized through elemental analysis, IR, fluorescence spectrophotometry, ESR and XPS. It is found that the coordination is realized through binding of N in chitosan with the Co(Ⅱ) in CoSalen complex. Because the site isolation effect present in CS CoSalen may inhibit the formation of dimers and μ oxo dimers of CoSalen, the coordinated CoSalen showed a more efficient activity in the oxidation reaction of ethanethiol than the monomeric complex.

制备了二氧化硅担载的壳聚糖 Co Salen配合物 ,用元素分析 ,红外光谱 ,荧光光谱、X光电子能谱及ESR谱等方法对该配合物的组成和结构进行了表征 .结果表明 ,Co Salen是通过其钴离子与壳聚糖的氨基氮配位形成配合物 ,这种配合物可通过其空着的第六配位点与氧进行可逆性结合、使氧分子活化 .对乙硫醇催化氧化研究表明 ,这种高分子配合物中活性中心的基位隔离效应导致其催化氧化活性远大于相应的小分子配合物本身 .

The structure and catalytic properties of perovskite-type catalysts for oxidative coupling of methane(OCM) have been studied by using X-ray diffraction (XRD)、Temperature-programmed desorption of oxygen(O 2-TPD) methods.It has been shown that doping the cations of lower valence (e.g.Mg 2+ ,Al 3+ ) to the B site of SrTi 0.9 M 0.1 O 3-δ perovskite-type catalysts results in the higher temperature desorption of adsorbed oxygen species on the surface of catalysts and thus higher C 2-selectivity...

The structure and catalytic properties of perovskite-type catalysts for oxidative coupling of methane(OCM) have been studied by using X-ray diffraction (XRD)、Temperature-programmed desorption of oxygen(O 2-TPD) methods.It has been shown that doping the cations of lower valence (e.g.Mg 2+ ,Al 3+ ) to the B site of SrTi 0.9 M 0.1 O 3-δ perovskite-type catalysts results in the higher temperature desorption of adsorbed oxygen species on the surface of catalysts and thus higher C 2-selectivity for OCM reaction and doping Mg 2+ cations to the B site of SrTi 1-x Mg x O 3-δ Perovskite-type catalysts results in the formation of oxygen vacancies in the lattices of oxide catalysts and the higher temperature desorption of adsorbed oxygen species.With increasing the amount of Mg 2+ doped in the B site of SrTi 1-x Mg x O 3-δ ,methane conversion and C 2 selectivity first increase and then decrease remarkbly.The SrTi 1-x Mg x O 3-δ catalyst with x=0.1 has the highest methane conversion and C 2 yield.It is suggested that the oxygen vacancies of perovskite-type catalysts are the sites reponsible for oxygen activation,and the adsorbed oxygen species on the surface of catalysts are the main active species for OCM reaction.The adsorbed oxygen species that desorped at higher temperature are in favor of increase of C2 selectivity for OCM.

用X—射线粉末衍射 (XRD)、氧吸附—程序升温脱附 (O2 -TPD)研究了柠檬酸热分解法制备的钙钛矿型催化剂的组成、结构与甲烷氧化偶联反应 (OCM)催化性能 ,结果表明钙钛矿型SrTi0 .9M0 .1O3 -δ(M =Mg ,Al,Zr)的B位掺杂离子的价态越低 ,脱附温度越高 ,这与催化剂对生成C2 产物的选择性相关联 ;钙钛矿型SrTi1-xMgxO3 -δ的B位Mg2 + 掺杂量越多 ,催化剂中的氧空位越多 ,脱附温度升高。当B位Mg2 + 掺杂量x≤ 0 1时 ,催化剂的甲烷转化率和C2 选择性明显增加 ,当x≥ 0 1时又明显下降。认为低价离子掺杂所产生氧空位为氧分子的活化提供了活性位 ,表面吸附态氧物种为OCM反应主要活性氧物种 ,较高温度脱附的吸附氧有利于甲烷氧化偶联C2 选择性的提高。

 
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