查询词典 ceria

The results indicated that the effect of lanthanum was better than ceria in the process of synthesize SiC by carbonthermal reduction method.

表明在碳热还原法制备SiC粉体的过程中，稀土镧的作用要强于稀土铈。

With the development of functional materials, great interest has been focused on the synthesis and characterization of specific fine/mesoporous ceria powder.

随着功能材料的不断发展，各种特殊物理性能的氧化钵粉体的合成和性能表征研究十分活跃

The core-shell structure can be arrived by in-situ dispersion polymerization. and there is chemical action between PAn and ceria.

它们之间的作用发生在N原子上，这可以通过红外光谱和拉曼光谱共同证明。

After the above-mentioned optimization process, the particle size and appearance density of ceria could reach 20 pm and 1.9 g/cm3, respectively.

经过上述优化过程以后，氧化铈的粒度和表观比重分布达到20 pm和1.9 g/cm3。

The main reason for the difference of ceria solubility in two ceramics sintered from two kinds of powders is attributed to the different stabilizing mode.

稳定剂进入微结构方式的不同是两种工艺中CeO〓在晶粒中固溶量随晶粒尺寸变化出现差异的主要原因。

The complex PSZ ceramics are very sensitive to the amount of yttria, and insensitive to ceria whose content can be changed in wide extent.

Y，Mg-PSZ材料对Y〓O〓的含量非常敏感，而-PSZ中的CeO〓含量可以在较大范围内变化。

In this study, the modified precipitation and recrystallization processes combined with a controlled calcination process for fabricating the ceria with large particle size and high appearance density was reported.

报导了一种与控制烧结大粒度，高表面比重的氧化铈的过程相结合的改性沉淀与再结晶过程。

The results showed that adding a small amount of ceria improved the dispersion of cobalt, decreased the electron density of the cobalt particle, and enhanced the dissociation of CO on the catalyst surface.

表征结果表明，少量CeO2助剂的添加提高了活性组分Co在催化剂表面的分散度，降低了催化剂表面Co的晶粒度，使催化剂对CO和H2的吸附性能发生了改变。

Due to the low viscosities of inversemicroemulsions, our approach is suitable for the direct impregnation of porous SiC materials with well-defined ceria nanoparticles.

由于反相微乳剂的粘度低，我们的方法适合用轮廓清晰的氧化铈纳米粒子对多孔碳化硅材料进行直接渗透。

The results indicate that Ce4 decompose to CeO2 at a temperature around 200℃ and forms cubic fluorite structure ceria below

利用DTA/TG热分析和XRD对Ce4的热分解行为进行了研究，Ce4在200℃左右时开始分解。

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。