查询词典 hydrogen

Also, the chemisorption measurements revealed that hydrogen and carbon monoxide adsorbed on the same active sites of the catalyst.

此外，化学吸附测试结果表明氢气和一氧化碳是在催化剂表面同一活性中心上吸附。

For well-dispersed Pt, all particles are essentially on the surface available for chemisorption by an equal number of oxygen or hydrogen atoms

对于分散良好的铂，表面上的全部粒子在表面上基本上都能被相同数量的氧原子或氢原子进行化学吸附。

The different substitutes had an effect on the main form of β-diketones, making the hydrogen donors to chloranil different correspondingly.

二酮类化合物中的不同取代基会影响其主要存在形式，因而使得四氯苯醌夺取氢的对象也有所不同。

In the process, chloranil firstly was excited to singlet state and then a labile hydrogen abstraction interaction between singlet chloranil andβ-diketones was involved to form singlet stable neutral radical pairs.

光照作用下，四氯苯醌首先跃迁至单线态，然后夺取β二酮类化合物分子中的活泼氢，形成单线态中性自由基对。

The result indicated that, Next time the sodium chlorate oxidant processing effect will have to throw in the same condition adds the hydrogen peroxide solution the processing effect to have to be better than.

结果表明：在相同的条件下次氯酸钠氧化剂的处理效果要比投加双氧水的处理效果要好。

It is based on the greatly enhancive effect of chlordiazepoxide on the chemiluminescence reaction between luminol and hydrogen peroxide in the flow system.

研究了氯氮卓在luminol-H2O2-NaOH体系中的化学发光行为，在选定的最佳实验条件下，测定了氯氮卓浓度与化学发光强度的关系。

Two main raw materials: First, hydrogen chloride, and the other is industrial silicon.

两个主要的：一是原材料，氯化氢，另一种是工业硅。

First, a chlorinator was self-designed in this paper, and dichloride of 2-methyl-1-propene was synthesized by 2-methyl-1-propene reacted with chlorine fast in this reactor. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the yield and selectivity of dichloride of 2-methyl-1-prop-ene were more than 65% and 80% respectively. Second, the preparation of 2-methylene-1, 3-propanediol, which dichloride of 2-methyl-1-propene reacted with alkali was investigated. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the conversion of dichloride of 2-methyl-1-propene was 100%. Moreover the preparation of MPO, which 2-methylene-1, 3-propanediol reacted with hydrogen, in presence of Al_2O_3-Pd catalyst, was gotten, and the product was appraised.

本文在氯化反应过程中，自行设计制作出了氯化管式反应器，在该反应器中异丁烯和氯气迅速混合反应生成二氯异丁烯，根据该氯化反应特征利用正交试验和单因素试验考察了有关因素的影响并优化得到了最佳工艺条件，二氯异丁烯的总收率达65％以上，选择性达80％；接着，对二氯异丁烯进行水解反应制得了2-甲烯-1，3-丙二醇，讨论了相关因素对水解反应的影响，并通过正交试验和单因素试验得到了较佳工艺条件，二氯异丁烯的转化率达100％；同时还对制备的2-甲烯-1，3-丙二醇在常压下采用三氧化二铝负载钯催化剂催化加氢得目的产物MPO，并对产品进行了鉴定，从而打通了整个工艺路线。

The effect of chlorine dioxide and hydrogen peroxide on the shelf life of wet raw noodle was investigated.

主要研究了二氧化氯和双氧水在湿生面条保鲜方面的作用。

Chlorofluorocarbon: Any of several organic compounds containing carbon, fluorine, chlorine, and hydrogen.

氯氟烃：由碳、氟、氯和氢组成的若干有机化合物中的任何一种。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。