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在钯
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  “在钯—”译为未确定词的双语例句
     HYDROGENATION OF IRREVERSIBLY ADSORBED ACETYLENE OVER PALLADIUM SUPPORTED ON FIBROUS ALUMINA
     在钯—纤维氧化铝上不可逆吸附乙炔的加氢
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     A different substitutent effect has been uncovered with respect to nitrogen substituents in the benzimidazolium salts from the palladium-imidazolium salt analogs.
     在钯—苯并咪唑盐催化体系中,苯并咪唑盐氮上不同取代基对催化体系在偶联反应中的活性有显著影响,而且与广泛报道的钯—咪唑盐体系明显不同:咪唑盐氮上含芳基取代的钯—咪唑盐体系比相应的烷基取代体系的催化活性更高,而氮烷基取代的钯—苯并咪唑盐催化体系比相应的芳基取代的苯并咪唑盐体系显示出更高的催化活性。
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  相似匹配句对
     The Applications of Palladium Membrane
     膜的应用
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     Palladium Plating Bath
     电镀电解液
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     APPLICATIONS OF PALLADIUM COMPLEXES IN ORGANIC SYNTHESIS
     配合物有机合成中的应用
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     Application of Palladium Electrode in Electric Potential Titration
     电极电位滴定中的应用
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     A Super-trace Determination of Palladium by Catalytic-Oscillopolarographic Method
     催化反应示波极谱法测定超痕量
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  palladium supported on
X-ray photoelectron spectroscopy (XPS) was used to study the states of the AS-30 aluminosilicate support calcined at 600, 800, or 1000°C and palladium supported on it.
      
The stability of finely dispersed palladium supported on silica gel with respect to various acids was studied.
      
Palladium supported on carbon is also an effective hydrocarboxylation catalyst in the presence of triphenylphosphine and HCl.
      
Palladium supported on alumina was used to hydrogenate soybean and canola oil.
      
Reducibility and reoxdation of nickel and copper-nickel catalysts with addition of palladium supported on alumina have been investigated by the TPR and TPO methods.
      
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This paper discusses the reproducibility for the calibration of Pt-30Rh/Pt-6Rh thermocouples by “wire method” at the palladium point under normal atmospheric pressure, and also the influences of the uniformity of furnace temperatures and partial oxygen pressure on the melting point of palladium. Experimental results indicate that the “wire method” at the palladium point is with permissible errors within ±1℃ without cosideration of the effect of oxygen pressure. Therefore, it is suitable for calibration of high...

This paper discusses the reproducibility for the calibration of Pt-30Rh/Pt-6Rh thermocouples by “wire method” at the palladium point under normal atmospheric pressure, and also the influences of the uniformity of furnace temperatures and partial oxygen pressure on the melting point of palladium. Experimental results indicate that the “wire method” at the palladium point is with permissible errors within ±1℃ without cosideration of the effect of oxygen pressure. Therefore, it is suitable for calibration of high temperature industrial thermocouples as a “checking point” for previous calibrations.

本文讨论在空气常压下,用"熔线法"对Pt-30Rh/Pt-6Rh热电偶在钯点校正的复现性,以及炉温均匀性对校正测量值的影响.试验结果表明:热电偶在钯点的复现性为±1℃之内,可以在工业上作为一种简易方法对热电偶进行"监督性"的校验.

In this paper, a brief quantitative description of desorption kinetic is given. Calculation methods of various parameters and their relation with non-linear thermal desorption spectrum are discussed. Some valuable informations are obtained therefrom.Finally, the thermal desorption spectrum of H_2 in Pd-fibrous A1_2O_3 is given, and good agreement between parameters calculated by different methods is observed.

文中简明地定量描述非线性程序升温脱附动力学过程,还就参数的计算及其与非线性升温热脱附图谱的关系进行了深入的讨论,得到一些有用的信息。并给出了H_2在钯-纤维氧化铝上热脱附图谱的结果。

Dialkyl ethenephosphonates, on reaction with aryl bromides in the presence of palladium catalyst, gave the corresponding 2-arylethenephosphonates (6 or 7) in moderate to good yields. Thus, it provides a simple and facile synthesis of 2-arylethenephosphonates. Their ~(31)P NMR chemical shifts show a linear correlation with the Hammett σ constants of the substituents in the benzene ring. Similarly, diethyl ethenephosphonate underwent palladium-catalyzed vinylation reaction with vinyl bromides and the corresponding...

Dialkyl ethenephosphonates, on reaction with aryl bromides in the presence of palladium catalyst, gave the corresponding 2-arylethenephosphonates (6 or 7) in moderate to good yields. Thus, it provides a simple and facile synthesis of 2-arylethenephosphonates. Their ~(31)P NMR chemical shifts show a linear correlation with the Hammett σ constants of the substituents in the benzene ring. Similarly, diethyl ethenephosphonate underwent palladium-catalyzed vinylation reaction with vinyl bromides and the corresponding substituted 1, 3-dienephosphonates (10) were formed, though in less satisfactory yields. The configurations of compounds 6, 7 and 10 were determined by NMR speclroscopy.

本文报道乙烯基膦酸酯在钯催化下的芳基化和烯基化反应.乙烯基膦酸酯与芳基溴化合物在钯催化下反应,可顺利地生成相应的E式2-芳基取代乙烯基膦酸酯(6,7).操作简便,反应条件温和,产率中平,是合成2-芳基取代乙烯基膦酸酯较好的方法.测定了不同取代芳基乙烯基膦酸二乙酯的~(31)p NMR δ值,它们与Hammett取代基常数σ之间有较好的线性关系.乙烯基膦酸酯亦能与烯基溴化合物反应,生成相应的取代1,3-二烯基膦酸酯(10),但反应时间较长,产率较低.由NMR推定了6,7和10的构型.

 
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