金属粒子

Using mordern physical chemistry techniques (such as XRD、 TG-DTA、 IR、 XPS and 〓Xe-NMR)、 chemical adsorption techniques (NH〓-TPD、 H〓-TPD、 TPO、 TPR etc.) and pulse flow microreaction of n-hexane、 methylcyclopentene and n-hexane containing 0.2ppm thiophene, we studied mainly the following three points:(1). the changes occured during the calcination pretreatment of Pt ammine complex supported on β and L zeolites;(2). the effect of structure and acidity-basicity of zeolite on the dispersion and electron state of Pt particles; and (3). the influence of second metal component on the reactivity of nhexane aromatization and sulphur-resistance of Pt/L zeolite catalyst. Several interesting and valuable results are obtained and summerized as follows

本论文运用各种近代物理表征方法(XRD、BET、TG-DTA、IR、XPS和〓Xe-NMR)、化学吸附技术(NH〓-TPD、H〓-TPD、TPO、TPR等)和正己烷、甲基环戊烷及含噻吩正己烷的脉冲微反等方法，着重研究了(1)载Pt的β和L沸石在分解预处理过程中发生的变化；(2)沸石载体结构及酸碱性对Pt粒子分散及电子状态的影响；(3)第二金属组份对载Pt沸石催化剂上正己烷芳构化及抗硫性能的影响等，得到了某些有意义的结果。

The compound electrical conductive adhensive was usually made by filling electric conductive particles in the polymer,the electrical conductive particles are aurum,silver, copper, nickel metallic particles etc.

最为常用的是非导电聚合物中填充导电粒子制成复合导电胶，其导电填料主要采用金、银、铜、镍等金属导电粉末。

Under an atmospheric pressure of H2, the conversion of m-phenoxy benzaldehyde was beyond 99% after 12 h of reaction at 40℃.

以间苯氧基苯甲醛催化加氢反应为模型反应，研究了Pt和Pd金属纳米粒子的催化反应性能。

We have reviewed the researches on synthesis and application of nanoalloys and bimetallic NPs with core-shell structure reported in recent years.

本文综述了近年来有关核壳结构双金属纳米粒子合成与应用方面的研究结果。

In addition, the preparation of palladium and silver nanoparticles were also realized by the reduction of their salts with potassium bitartrate under alkaline condition.

另外，在碱性条件下，用酒石酸氢钾还原相应的金属盐实现了制备钯和银纳米粒子。

The synthesis of gold and platinum nanoparticles by the reduction of their salts with potassium bitartrate as the reductant and poly (N-vinyl-2-pyrrolidone) or 3. 3-thiodipropionic acid as the capping agent has been studied.

对以聚和3，3—硫代二丙酸为覆盖试剂通过酒石酸氢钾还原相应的金属盐制备金、铂纳米粒子作了研究。

By organically combining ultrasonic technology and electrodeposit...

通过超声和电沉积两种技术的有机结合，在常用金属表面获得由尺寸50n m以下的镍晶和纳米SiC粒子构成的纳米级金属陶瓷复合镀层。

In the study of thin-film conductors,ion diffusion is an important phenomenon as electrodiffusion degradation can lead to metallization failure.

在薄层导体的研究中，粒子的扩散是一类重要的现象，由于电扩散的降解能导致金属的毁坏。

The main work was centered on the study of microscopical morphology of incorporated nanostructured metal.

高的金属含量，均匀的粒子分布和非共振局域增强导致了极化率的提高。

For the preparation of binary alloys, double oxides or nitrides, it is necessary to use two different metals and different gases.

要制备双金属合金、双氧化物或氮化物纳米粒子就必需采用双金属丝和不同的介质气体。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。