查询词典 selectivity

The catalyst is used for dimethyl maleate hydrogenating reaction and has specific selectivity on the target product tetrahydrofuran and high heat stability.

该催化剂在应用于马来酸二甲酯加氢反应中，对目标产物四氢呋喃具有专一的选择性和很好的热稳定性。

This kind of general structural intercalation complex materials have three obvious characteristics: i Conditions of intercalation reaction are wild in room temperature, water or ethanol solution usually, ii we can process molecule design of host for increasing selectivity to guest molecules in order to prepare general structural intercalation complex materials, iii we can obtain all kinds of applied purpose complex materials by intercalating different functional guests.

这类特殊结构的复合材料具有三个显著特点：第1，制备条件温和，通常在室温、水或醇等溶液中进行；第2，通过对主体分子的设计，提高对客体分子的选择性，可以得到预先设计分子结构的复合材料；第3，通过对一些功能性客体分子进行插层组装，可以得到具有光、电、磁等结构新颖的复合材料。

Moreover,the selectivity of CAs-MB was related to the position and the type of mismatched base.

另外，分子信标的识别能力还与错配碱基的类型及在分子信标中的位点有关。

The method is simple and rapid, offering superior sensitivity and selectivity for opiates.

所建立的方法简便、快速、特异性强、灵敏度高。

On the other hand, Co–Mn is the best catalyst in term of selectivity towards oxygenates under the conditions studied.

另一方面，公司锰是最好的催化剂在任期内实现含氧化合物选择性的条件下研究。

However, regarding selectivity towards oxygenates the relationship becomes the opposite.

然而，关于对含氧化合物选择性的关系变得相反。

The spectra of reaction of CO+H_2 with Ru-Co/SiO_2catalysts showed a band appearing at 1584cm~(-1),which has a good relationship to theactivity and selectivity for oxygenates in CO hydrogenation.

在前面的研究中，肖一丰收等人报导了担载的Ru一Co双金属原子簇催化剂在CO+H：反应中对含氧化合物的生成显示了很高的活性和选择性

On the basis of consideration of various factors whichinfluence the process benefit such as the catalytic activity, the selectivity toward C2 oxygenates, Rh efficiency, and the operation cost, the favorable reaction temperature should be in the rangeof 583-593 K, and the optimized Rh loading be 1 ~2 wt.%.

综合考虑催化剂的活性、选择性、催化剂的Rh效率、工业消耗以及对设备的要求，认为，反应温度为583～593 K，催化剂Rh担载量为1～2wt。

Compared with the precipitated Mnpromoted catalyst, the addition of partial precipitated and binder Mn can enhance the selectivity of heavy hydrocarbons and olefins and restrain the formation of oxygenates.

与共沉淀Mn相比，部分共沉淀和黏结剂Mn提高了重质烃和烯烃的选择性，同时抑制了有机含氧化合物的生成。

The present invention is suitable for the reaction for generating aldehyde by oxygenizing various alcohols which include aliphatic alcohol, ester cyclitol, aromatic alcohol and diatomic alcohol, and which have high conversion rate to alcoholic and high selectivity to aldehyde or ketone.

本发明适用于包括脂肪醇、酯环醇和芳香醇以及二元醇在内的多种醇氧化成醛和酮的反应，具有对醇的高转化率和对醛、酮的高选择性。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷