反应物

By a series of the characterization on its textural properties and reactivity, we have found that the zeolitic shell in the catalyst could effectively prevent the soluble palladium species from being leached into the reaction solution because of the special molecular sieving effect of the zeolitic shell, endowing the catalyst with high reusability.

然而，对很多的贵金属参与的工业反应而言，由于反应物原料本身含有痕量的含硫或含氮的化合物，在反应过程中，这些杂环化合物分子与贵金属的强相互作用导致了贵金属活性中心被覆盖而失活，造成催化剂的中毒。

Mesoporous zincum sulfide is synthesized by gentle wet chemosynthesis method, with DDA as templates and Zinc acetate and TAA as precursors. The effect to the synthesis of the ratio of reactive components, the volume of pH, reactive time and reactive temperature has been dicussed systematically, and structures of the as-synthesized samples have been characterized by X-ray diffraction, N2 adsorption-desorption, scanning electron microscopy, Fourier transform-infrared spectra, UV-vis diffuse reflectance spectroscopy, transmission electron microscopy.

以十二胺为模板，醋酸锌及硫代乙酰胺为前驱体，温和湿化学法合成了硫化锌无序介孔结构，系统研究了反应物配比、pH值、反应温度、反应时间对材料合成的影响，运用X射线衍射、N2吸附-脱附、扫描电镜、红外光谱、紫外-可见吸收光谱、透射电镜等分析手段对介孔材料的结构进行了详细的表征。

However, it did not mean that the catalyst was not deactivating during this period. The breakthrough time was the most important basis to determine the reaction time in fixed bed reactor. The influence of some kinds of operating factors on the breakthrough time was studied.

从反应开始到反应器出口反应物浓度开始增加的这段时间，即穿透时间，是固定床反应器中反应时间确定的重要判据，研究了各种因素对穿透时间的影响。

The optimized configuration and electronic structures of reactants and products were studied by molecular orbital PM3 method.The reaction enthalpies ...

用半经验的量子化学PM3方法研究了反应物和产物的电子结构，得到了产物的最优构型和电荷键序分布以及反应焓变，讨论了反应中的电子效应和空间效应。

The effects of emulsiofier and organic acid,reaction time,temperature and proportion of reactants on the product properties were investigated.

同时考察了乳化剂及有机酸种类、反应时间、反应温度及反应物配比对产物各项指标的影响。

In addition, tin oxide nano-crystal with different sizes, such as sphere and ribbon shape, can be prepared by adjusting reaction time, temperature, alkaline amount and concentration of reaction matters.

通过调节反应时间、反应温度、碱的量、反应物浓度可以制备不同尺寸的球状、带状氧化锡纳米晶。

The optimal operation condition of Friedel-Crafts acylation for product Ⅰ was determined by orthogonal experiment: 0.02mol N-ethyl- carbazol, n Benzoyl chloride/n N-ethyl- carbazol=1.2, n AlCl3/n N-ethyl- carbazol=1.2 , at 25 oC for 3.5h. The yield was 94.6%.

通过正交设计实验，探讨了产物Ⅰ的Friedel-Crafts 酰化的最佳反应条件：N-乙基咔唑为0.02mol时，反应物苯甲酰氯与N-乙基咔唑摩尔配比为1.2。，催化剂AlCl3与N-乙基咔唑摩尔配比为1.2， 25℃下反应3.5h，产率可达94.6%。

NGF positive immunoreactive cells were observed in the airway epithelia of control group. The positive reactivity are located at cell plasm. The NGF positive immunoreactive cells are round or polygonal shape and throughout the whole C〓～T〓 spinal ganglion of control group.

对照组豚鼠气道上皮内可见到含有NGF免疫反应阳性颗粒的上皮细胞，阳性反应物位于胞浆，呈棕褐色。C〓～T〓段脊神经节内，NGF免疫反应阳性细胞遍布整个神经节，多呈大圆形或多角形。

Objective: To investigate the feasibility of the synthesis of Ethyl-p-Nitrobenzoate catalysed by Hydrogen Peroxide. We study the effects of the actor mole ratio, catalyst dosage, reaction temperature, and reation time on the esterification rate.

目的：探讨双氧水催化合成对硝基苯甲酸乙酯的可行性，并考察了反应物的摩尔比、催化剂用量、反应温度及反应时间对产物收率的影响。

The experiments of column leaching and industrial heap leaching were carried out at different acid concentrations.

多相反应的特点是反应发生在两相界面上，反应速度常与反应物在界面上的浓度有关。

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。