查询词典 first order reaction

The theoretical deduction and many experiments discovered that reaction of isocyanate with water is second order in room temperature, and the water and isocyanate are first order to the rate respectively.

通过理论推导和大量实验证明，室温下异氰酸酯与水的反应可以使用准二级方程描述，水和异氰酸酯基的分级数都是1。

Theoretical analysis reveals that the reaction of the immobilized enzyme of low substrate concentration may be approximated to be of first order, while that of high substrate concentration to be of zero order.

经过对固定化酶反应动力学理论分析可知，实验条件下的低基质浓度区内测定的固定化酶反应可近似地作为一级反应，而在高基质浓度区内测定的固定化酶反应可近似地作为零级反应。

The simplified peseudo-first-order kinetic model for hydrolyzation of benzal chloride was proposed according to the character of hydrolyzation reaction and the apparent reaction rate constant and activity energy was obtained. The activity energy is 17.73KJ/mol in the temperature range from 900C to 1100C and the model values and experimental values tally well.

根据水解反应的特点，提出了简化的苄叉二氯水解反应拟一级动力学模型，经参数估计，得出了水解反应的宏观反应速率常数和活化能，在900C～1100C温度范围内，反应活化能为E1＝17.73kJ/mol，模型计算值与实验值吻合较好。

The reaction kinetics of polyurethane formation and that of trimerization of isocyanate in a system of polyisocyanurate modified by urethane were studied by FTIR. The results show that the two competing reactions occurred and progressed simultaneously, and the trimerization was found to be first order, and the polyurethane formation was first order with respect to the isocyanate concentration and zero order with respect to the polyol concentration.

采用傅里叶快速红外光谱技术研究了氨酯改性聚异氰脲酸酯反应体系中氨酯、聚异氰脲酸酯生成的反应动力学，结果表明，在该反应体系中，氨酯反应和异氰酸酯的三聚反应是同步发生并同步进行的，其中三聚反应是一级反应；氨酯对异氰酸酯是一级反应，对聚醚二元醇为0级反应。

The results showed that the reaction was first-order and the velocity of reaction can be described by Langmuir-Hinshelwood equation.

对光催化氧化有机污染物的反应动力学进行了实验研究，结果表明，Bi_2O_3光催化氧化亚甲基兰模拟废水的反应为一级反应，反应可用L-H动力学方程描述。

The experimental results indicate that the reaction rate exhibited first-order with respect to aniline and half-order to APS and dodecylbenzene sulfonic acid.

研究结果表明，苯胺的乳液聚合反应速率对苯胺是一级反应；对APS和十二烷基苯磺酸均为0.5级反应。

E. , a relatively fast second-order reaction followed by a very slow first-order one.

这两个阶段的反应速率都是TEMPO-16 2。

Based on the-references on the thermal imidization of polyand the polymer composition analysis,the thermal imidization mechanism of SMA with aniline was demonstrated to be a two-stage consecutive reaction,in which a second-order reversible ring-opening reaction of SMA to produce poly(styrene-co-N-phenyl-maleamic acid)and a first-order irreversible intrachain ring-closing reaction to form SNPMI were involved.

论文首先参考聚酰胺酸热环化反应，并通过SMA酰亚胺化产物的组成分析，确定了SMA与苯胺的热酰亚胺化反应机理为一个包含由SMA生成苯乙烯—N-苯基马来酰胺酸共聚物的二级可逆开环反应以及由SNPMA生成苯乙烯—N-苯基马来酰亚胺共聚物的一级不可逆分子内闭环反应在内的串联反应过程，其中第二步SNPMA闭环反应为控制步骤。

The analysis indicated that the model accord with Langmuir—Hinshelwood kinetics equation in the process of reaction,and the reaction order is first order.

在本研究范围内，通过对不同条件下的数学模型进行的反应动力学分析认为，光净化反应符合Langmuir-Hinshelwood动力学方程，反应级数一级。

The results show that perfect anatase nanocrystalline TiO2 can be obtained by SGRTSE method and the photocatalytic activity of TiO2 can be improved by doping and surface treatment. In the experimental system, the addings of proper salts are beneficial to the photocatalytic degradation of DBSNa. The pH value of solution, adding amount of TiO2, flow rate of air, and initial concentration are the main influence factors for the photocatalytic degradation of methyl orange, and the apparent reaction order is pseudo-first-order, which could be described by Langmuir- Hinshelwood equation.

结果表明：sol-gel法结合室温溶剂蒸发诱导可制备出晶型良好的锐钛型纳米TiO_2；过渡元素和稀土元素杂原子掺杂，贵金属掺杂和表面酸化处理是有效提高TiO_2光催化活性的途径；试验体系中，在DBSNa的降解过程中加入适量的盐，可以大大加速降解效果；光催化降解水中有机物，溶液pH值，TiO_2投加量，曝气速率，被降解物起始浓度等是影响降解效果的重要因素；对起始浓度较低的有机物光催化降解过程可利用简化的Langmuir-Hinshelwood动力学方程进行描述，反应级数为拟一级。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。