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unsaturated compounds
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  不饱和有机物
     Hydrogenation of Unsaturated Compounds over Ruthenium Based Catalysts in Aqueous Media
     水体系中钌催化不饱和有机物加氢反应研究
短句来源
     This paper studied the selective hydrogenation of benzene to cyclohexene, preparation of chain-like Ru nanoparticle arrays and its application in fast hydrogenation of unsaturated compounds in aqueous media.
     本论文考察了水存在条件下的苯选择加氢反应,水溶液中链状钌纳米阵列的制备及其在含水体系中不饱和有机物快速全加氢反应中的应用。
短句来源
  不饱和化合物
     Advances in Amorphous Alloy Catalyst in Hydrogenation of Unsaturated Compounds
     非晶态合金催化剂用于不饱和化合物加氢的研究进展
短句来源
     Studies on Palladium Catalyzed Carbonylation Reactions of Multifunctional Unsaturated Compounds
     钯催化下多官能团不饱和化合物的羰基化反应研究
短句来源
     Research progress in the hydrogenation reaction of hydrocarbons unsaturated compounds,CO,CO2 etc. ,on amorphous alloy catalysts were also described.
     以及非晶态合金催化剂在烃类加氢、其他不饱和化合物加氢、CO、CO2加氢等领域的研究进展。
短句来源
     Advances in Amorphous Alloy Catalyst in Hydrogenation of Unsaturated Compounds
     非晶态合金催化剂对不饱和化合物加氢研究进展
短句来源
     2.The electrophilic additive reaction of Heterocyclic Ketene Aminals:Heterocyclic Ketene Aminals iS a especial mono—aza—ene component,the addive reaction of Heterocyclic Ketene Aminals with a system of a,B一unsaturated compounds or the ester—and cyano—compounds is passed the path of the aza—ene reaction.
     2. 杂环系统缩胺的亲电加成反应:杂换烯酮缩胺是一类独特的单杂烯组分,它与一系列α,β-不饱和化合物、偶氮酸酯以及活化的羰基化合物的加成反应是经过氮杂烯的途径进行的。
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  “unsaturated compounds”译为未确定词的双语例句
     A great amount of unsaturated compounds not only characterizedthe initial state of organism evolution, but also showed the redox characteristics in thesurface layer soil. The variation of concentration of alkane (from 12.5×10-6 insurface soil to 29.4× 10-5 in the soil 3.5- 8.5cm under the surface) and areneshowed that organisms evolution began under normal temperature and pressure.
     不同层位样品中烷烃和芳烃的含量变化很大,同一剖面烷烃含量最大变幅为:1.73×10-5(表层藻垫)至4.10×10-5(表层下3.5-8.5cm土样),说明有机质在常温常压下即开始了演化过程。
短句来源
     CATALYTIC ACTIVITY AND SELECTIVITY OF POLY-γ-AMINOPROPYLSILOXANE-Pt COMPLEX IN HYDROSILYLATION OF UNSATURATED COMPOUNDS
     聚-γ-氨丙基硅氧烷—铂络合物对不饱和化合物的硅氢加成的催化活性和选择性
短句来源
     The color stability of hydrotreated diesel fuel is connected with the contents of unsaturated compounds and heteroatom compounds.
     加氢柴油的颜色稳定性与所含的不饱和烃和杂原子含量有关。
短句来源
     A detailed discussion of amorphous alloy catalyst in hydrogenation of unsaturated compounds is presented.
     对负载型非晶态合金催化剂用于含不饱和基团化合物的加氢性能作了较为详细的阐述。
短句来源
     THE HYDROGENATION OF UNSATURATED COMPOUNDS OVER SUPPORTED PALLADIUM CATALYSTS
     负载型钯催化剂用于不饱和化合物的加氢反应
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  unsaturated compounds
The Effect of Ultrasound on the Addition of Polychloro Derivatives to Unsaturated Compounds
      
Hydrogen peroxide decomposition and the oxidation of unsaturated compounds (anthracenes, alkenes, etc.) in the H2O2/V(V)/AcOH system occur via a molecular mechanism.
      
The effects of amine basicity, ionization potential, and dipole moment and the steric parameters of substituents in amine molecules on the rates of reactions between the unsaturated compounds and secondary amines were considered.
      
The catalytic properties of cluster magnesium derivatives were studied using the self-hydrogenation reaction of unsaturated compounds as an example.
      
The catalytic properties and nature of Ziegler-type Pd(Acac)2 and Pd(Acac)2PPh3 based catalysts are studied in the hydrogenation of unsaturated compounds.
      
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In presence of certain catalysts, such as organic peroxides, organic bases, platinium or other metallic compounds, or in absence of catalysts but being radiated by ultraviolet light or γ-rays, or simply by heating under higher pressure, silanes of the type, RR'R''SiY, where R'S may be alkyl, aryl or alkoxy groups or halogen atoms and Y may be either a hydrogen or an alkalie metal atom, can be added to the unsaturated compounds containing carbon-carbon or carbon and other elements(such as oxygen or nitrogen)multiple...

In presence of certain catalysts, such as organic peroxides, organic bases, platinium or other metallic compounds, or in absence of catalysts but being radiated by ultraviolet light or γ-rays, or simply by heating under higher pressure, silanes of the type, RR'R''SiY, where R'S may be alkyl, aryl or alkoxy groups or halogen atoms and Y may be either a hydrogen or an alkalie metal atom, can be added to the unsaturated compounds containing carbon-carbon or carbon and other elements(such as oxygen or nitrogen)multiple bonds to form the coresponding substituted silanes. The manipulation of the reactions are relatively Simple and the yields of the reaction products are often fairly good and in some occasions even quantitative. Thus, it may be a hopeful way to synthesis various valuable monomers of organosilicon poly-mers through these reactions. In present review article, the literature data about this subject since the discovery of the reaction till 1961(and a few of 1962)have been collectec and discussed on a theoretical as well as a practical view.

硅烷类在过氧化物,紫外线,有机碱,铂,钯或其它金属化合物存在下,或在高温高压下,或以r-射线照射,能与烯烃或炔烃以及它们的衍生物进行加成得到对应的烃基硅化合物;其中以H Si X_3最容易进行加成,H Si R X_2,H Si R_2 X次之;H Si(OR)_3,H Si R_3(R=C_6H_5例外),Si X_4最难,不饱和烃中碳链分枝愈多,加成愈困难。催化剂中以铂催化剂(pt石棉,H_2 Pt Cl_6,pt/c)应用范围最广,催化效能最高,并且不致引起易聚合的烯烃发生聚合,硅烷与含碳氧或碳氮或氮氮双键进行加成反应时,硅烷基总是加在杂原子上。这个反应是制备含长链烃基,具取代基的烃基及(?)基硅烷类的捷便方法。配合我国硅有机聚合物的生产,这方面研究工作是亟待展开的,尤其硅烷与烯烃间的调聚反应,与那具有取代基烯烃及炔烃的加成反应特别值得令人注意。

The native technical tetrahydrofuran was tested by G. L. C. to contain micro amounts of hydroxyl-, carbonyl- and unsaturated compounds. Thus it can not be used as monomer for polymerization. In order to determine these impurities, we used the 3.5-dinitrobenzoyl chloride colorimetric method for hydoxyl compound, the 2.4-dini- trophenylhydrazine colorimetric method for carbonyl compounds and coulometric titration method for unsaturated compounds. We found that if the esterification was...

The native technical tetrahydrofuran was tested by G. L. C. to contain micro amounts of hydroxyl-, carbonyl- and unsaturated compounds. Thus it can not be used as monomer for polymerization. In order to determine these impurities, we used the 3.5-dinitrobenzoyl chloride colorimetric method for hydoxyl compound, the 2.4-dini- trophenylhydrazine colorimetric method for carbonyl compounds and coulometric titration method for unsaturated compounds. We found that if the esterification was carried out at a temperature of 50+2℃ in the determination of hydoxyl compound, the sensitivity of the method was increased. The colored complex developed with 0.1 ml of 2N or 5% sodium hydroxide was found to be stable within 30 minutes. The methods used by us for the determination of micro amounts of the above mentioned impurities in technical tetrahydrofuran are simple, rapid and accurate.

国产工业四氢呋喃,用气相色谱法证实含有羟基化合物、羰基化合物和不饱和化合物等微量杂质,不能用作高分子单体。为此,对这些杂质分别进行了测定。用3.5-二硝基苯甲酰氯比色法测定羟基化合物,反应在50±2℃条件下进行,提高了灵敏度,在0~60微克/毫升范围内符合比耳定律;以2N或5%氢氧化钠溶液0.1毫升显色为最适宜的条件,有色物在30分钟内是稳定的。羰基化合物的测定采用了2.4-二硝基苯肼比色法,在0-20微克/毫升范围内符合比耳定律。不饱和化合物的测定采用了恒电流库伦滴定法,以0.1N溴化钾-1N盐酸为电解液,由铂阳电极析出新生态溴与不饱和化合物反应,以甲基橙为指示剂,终点由红变黄。这些测定方法均快速、准确,宜于工业四氢呋喃中此三种微量杂质的测定。

The Pd-tussah silk catalyst was prepared by anchoring palladium chloride on tussah silk and then activating with reductive agents or hydrogen. The catalyst was characterized by XPS, IR, electron microscope and X-ray diffraction measurements. A wide range of oxidation states of Pd(0-II) was observed and it seemed that the donor groups of protein might coordinate to palladium with the formation of catalytic active species. The activity of Pd-tussah silk was compared with that of conventional supported Pd-catalysts,...

The Pd-tussah silk catalyst was prepared by anchoring palladium chloride on tussah silk and then activating with reductive agents or hydrogen. The catalyst was characterized by XPS, IR, electron microscope and X-ray diffraction measurements. A wide range of oxidation states of Pd(0-II) was observed and it seemed that the donor groups of protein might coordinate to palladium with the formation of catalytic active species. The activity of Pd-tussah silk was compared with that of conventional supported Pd-catalysts, and it exhibited high a'ctivity in the hydrogenation of several unsaturated compounds under normal temperature and pressure. The hydrogenation rates (mol H2/mol Pd-min) of isoprene, hexyne-1, crotonaldehyde, cyclopentadiene, hexene-1, nitrobenzene and cinnamaldehyde were 18.8, 7-5, 6-8, 5-3, 4-7; 0.3, and 0-3 respectively. Detailed experiments were carried out with crotonaldehyde as a model substrate. The catalyst activity was very sensitive to the preparation method and the solvent used in the hydrogenation. In various solvents, the initial rates of hydrogenation (mol H2/mol Pd-min) are in the following order: methanol (16.7), 95% ethanol (16-0), absolute ethanol (10-0), glaciad acetic acid (4.5), toluene (0.4), propanol (0.3),ethyl acetate (0.2), and THF or DMF(0). The rate equation of this reaction is with the reaction order of crotonaldehyde being zero. Pd-tussah silk catalyst can be easily separated from the solvent and recovered for repeated use at least 20 times without loss in activity.

以天然有机高分子柞蚕丝为载体制备了钯-柞蚕丝催化剂。用XPS,IR,电镜和X射线衍射等方法对钯-柞蚕丝催化剂进行了表征。此催化剂能对多种化合物进行催化加氢,在常温常压下具有很高的活性及稳定性,对巴豆醛加氢经过20次的回收和重复使用,未见活性降低。

 
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