查询词典 disproportionation reaction

Research on kinetics of disproportionation reaction for sulfur .

元素硫的歧化反应动力学研究。

The extent of the disproportionation reaction is closely related to temperature, heating time, substituted metal and the heat of formation of the alloys.

歧化反应的程度与加热温度、时间、第三组元M及合金的生成焓关系密切。

The film ing on steel using the disproportionation reaction of sub-sulphide of Al was studied.

对用低价硫化铝的歧化反应进行钢基镀膜作了定性研究。

The kinetics of titanium deposition on Al 2O 3 ceramic surface by heat disproportionation reaction has been studied.

利用融盐热歧化反应进行了氧化铝陶瓷材料表面沉积钛金属的动力学研究。

All aerobic organisms can produce 〓,which can become 〓 by disproportionation reaction and more reactive 〓 byFenton reaction.

所有的需氧生物体内均可产生〓，在体内可经进一步的岐化反应生成〓及经Fenton反应生成反应活性更高的〓。

The effect of the formation enthalpies on disproportionation reaction of the alloys at high temperature hydrogenation is discussed and it is found that the greater the entropies of alloys are, the more favorable it is for the disproportionation reaction.

讨论了生成焓对高温氢化时合金发生歧化反应的影响，合金的生成焓愈大，对歧化反应愈有利。

After analyzing the reaction mechanism through literature, we think the reaction from diethanolamine to iminodiatic salt is composed of two steps—reaction from alcohol to aldehyde and the disproportionation reaction of the aldehyde. The selectivity, conversion, rate of this reaction are mainly attributed to the capability of this catalyst.

通过查阅文献资料，分析了反应机理，认为二乙醇胺脱氢生成酸是由两步反应组成─醇脱氢生成醛与醛的歧化，催化剂的性能是影响反应转化率、选择性及反应速度的主要因素，确定了采用沉淀法制备Cu/ZrO2做催化剂。

To further extend the scope of this type Cannizzaro disproportionation reaction and the reactivity of enolate ligand in complex with aldehyde,we designed to synthesis new rare earth complexes containing arylamido and.enolate mixed ligands,studied their reactivity with aromatic aldehydes for the disproportionation reaction.

为了进一步探索这种歧化反应的应用范围及配合物中作为配体的乙烯醇基与醛的反应性，我们设计合成了含胺基、乙烯醇基混合配体的新型稀土配合物，并研究了其与芳香醛的反应。

Thirdly,in the view of some different results between the reaction of complexes(2)、(3)and[(Me_3Si)_2N]_3LnLi_3 with aromatic aldehydes, the reaction of 2 equiv of aromatic aldehydes with 1 equiv of lithium amide(1) catalyzed by the YCl_3 was subsequently studied,and better yields of the corresponding amides and alcohols can be isolated.These results indicated that the enolate ligand in complexes(2)、(3)may have impact on the Cannizzaro disproportionation reaction.

第三，鉴于上述配合物2、3和[(Me_3Si_2)2_N]_3LnLi_3与芳香醛反应结果上的一些差别，我们又以三氯化钇为催化剂，将两当量的芳香醛与一当量化合物1的锂盐直接进行反应，结果以较好的产率得到了相应的酰胺和醇，这说明配合物2、3中所含的乙烯醇基可能对此Cannizzaro-型歧化反应存在一定的影响。

For the first time,our group found that lanthanide amides can initiate the Cannizarro disproportionation reaction of aromatic aldehydes.

我们小组首次发现了通过稀土胺基化合物引发芳香醛发生Cannizzaro-型歧化反应，生成相应的酰胺和醇。

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。