查询词典 reaction rate

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。

Increased rate of reaction, in the presence of catalyzers, is called catalysis, or catalytic action.

有催化剂时，反应速度的加快叫做催化作用。

A method was developed for synthesis of DBP catalyzed with non-proton acid and the result showed that aluminum oxide can be used to synthesize dibutyl phthalate characterized with high reaction activity,good selectivity and high rate of conversion,but less environmental pollution.

通过研究非质子酸催化合成增塑剂邻苯二甲酸二丁酯的方法，探讨了合成的最佳工艺条件。实验结果表明，Al2O3催化酯化合成邻苯二甲酸二丁酯具有反应时间短、反应活性和选择性好、产率高、无环境污染等优点、是理想的合成DBP的催化剂。

The influences of the reaction conditions on the grafting rate of dibutyl maleate to black N330 and the grafted black N330 on the physical properties of NR vulcanizate were investigated.

探讨炭黑N3 3 0表面固相接枝顺丁烯二酸二丁酯的反应条件对DBM接枝率的影响及炭黑接枝DBM对NR硫化胶物理性能的影响。

Model of consecutive first-order reaction taken as an example, RCRA has been employed to determine the rate constants.

该方法用于处理苯胺电解降解的两维数据，发现苯胺降解过程中有一种表观中间体存在，降解过程符合一级连串反应模型。

Consecutive first-order reaction ; the ratio of the rate coefficient ; steady-state approximation ; computer simulation

一级连续反应；速率系数比值；稳态近似法；计算机模拟

During the process of consecutive first-order reaction, the trend of the intermediate is largely determined by the ratio of the rate coefficient; therefore this case leads to an important method:steady-state approximation.

在连续反应中，速率系数的比值很大程度上决定了中间产物浓度的走向，并由此引出了一个重要的方法：稳态近似法。

The grafting rate increases as the concentration of flame retardant increase, reaction time increase and the aid solute addtion. It is confirmed that the flame retardant promotes the degr...

热分析研究和剩炭的扫描电镜图分析说明阻燃剂促进 PVA的热降解及交联，形成致密的剩炭，起到阻燃作用

Because the fermentation temperature in this system is higher and less variable with seasons than that in ordinary temperature UASB, it is characterized with high reaction velocity, good effect, high gas-producing rate and good stability.

该系统中发酵温度高于常温UASB，并且随季节变化不大，反应速度快，处理效果好，产气率高且稳定。

The results of the test showed that when the pH value of the wastewater was1.5,the dosage of iron filing s was1%,the particle size of iron filing was60mesh,and the reaction time was40minutes,the removal rate of copper was about99.9%and the mass concentration of copper was below1mg/L.

试验结果表明：在废水pH值为1.5、铁屑用量为1%、铁屑粒径为60目、反应时间为40min的条件下，铜的去除率可达99.9%左右，可使出水铜的质量浓度在1mg/L以下。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。