查询词典 hydrogenation

Carbon bisulfide was the main poison in the hydrogenation reaction of conjugated double bond of styrene and the negative effect increased with the increase of carbon bisulfide content; the negative effect decreased with the increase of reaction temperature.

二硫化碳是苯乙烯中共轭烯烃加氢快速失活的主要硫化物。随着二硫化碳含量的增加，苯乙烯中共轭烯烃加氢活性下降程度增大；随温度升高，其加氢活性下降程度减小。

The catalyst and technological conditions that suitable for hydrogenation of castor oil are selected by orthogonal experimental design.

通过正交试验筛选出适合蓖麻油加氢的催化剂及相应的工艺条件。

Learn catalyzer of vapor phase catalysis hydrogenation and reaction example.

了解气相催化氢化的催化剂和反应实例。

Luminescence evolutions of GaN irradiated by low energy electron beam before and after hydrogenation has been investigated by means of cathodoluminescence, combined with the diffusion properties of hydrogen in GaN.

本文结合氢在GaN中的扩散特性，运用阴极荧光谱，对氢化前后低能电子束辐照下GaN带边发光强度的演变进行了研究。

The purpose of this design does not change in the basis of the original equipment used CENTUM CS3000 for the catalytic reforming pre-hydrogenation control devices in order to separate the liquid tank and the stripper pressure control as a priority, design a set of complete control program.

本次设计目的是在不改变原有设备的基础上采用CENTUM CS3000对催化重整预加氢装置进行控制，以分离罐的液位和汽提塔的压力控制作为重点，设计一套完整的控制方案。

The purpose of this design: do not change in the basis of the original equipment used CENTUM CS3000 for the catalytic reforming pre-hydrogenation control devices in order to separate the liquid level and tank pressure stripper tank and return level control focus on the design of a complete set of control programs.

本次设计目的：在不改变原有设备的基础上采用CENTUM CS3000对催化重整预加氢装置进行控制，以分离罐的液位以及汽提塔的压力和回流罐的液位控制作为重点，设计一套完整的控制方案。

The design purpose is not changing the original equipment on the basis of CS3000 CENTUM of catalytic reforming, advance hydrogenation to separator level and stripper pressure control, design as a complete set of control plan.

本次设计目的是在不改变原有设备的基础上采用CENTUM CS3000对催化重整预加氢装置进行控制，以分离罐的液位和汽提塔的压力控制作为重点，设计一套完整的控制方案。

The Pt/FDU-14 catalysts can be effectively applied in the asymmetric hydrogenation of ethyl pyruvate after chirally modified with cinchonidine.

考察了经过手性分子辛可尼定修饰后的Pt/FDU-14催化剂在丙酮酸乙酯不对称氢化反应中的催化性能。

In the asymmetric hydrogenation of ethyl pyruvate catalyzed by 0 5% Rh/PVP TiO 2, the chiral modifier cinchonidine not only induces the enantioselectivity, but also accelerates the reaction rate greatly.

研究了辛可尼定作手性修饰剂修饰的负载型纳米铑簇合物催化剂(0 5 %Rh/PVP TiO2 )催化丙酮酸乙酯不对称氢化反应，在该反应中手性修饰剂辛可尼定不仅具有对产物生成的手性诱导作用，而且对反应具有明显加速作用；在优化反应条件后，反应的TOF和对映选择性分别可以达到 5 8 0min-1和

As well as activity was exhibited. Theaddition of cinchonidine led to a remarkable increase in the reaction rate, as confirmed bythe IR study that the modifier activates the carbonyl groups of the reactant through itsquinuclidine nitrogen. On the contrary,〓 exerted a strong inhibition effect on theenantioselective hydrogenation. Chapter 3 Finely dispersed polyvinylpyrrolidone-stabilized iridium andbimetallic clusters were prepared by the alcohol-water reduction method.

第三章 采用醇水还原的方法制备了聚乙烯基吡咯烷酮稳定的铱纳米簇及双金属纳米簇，对丙酮酸甲酯的催化氢化表明，在铱金属簇催化体系中，辛可尼定不仅诱导了一定的对映选择性，同时对反应活性有明显的促进作用，平均反应速率可提高2-6倍。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48