查询词典 catalyst

Keywords cumene process;phenol;acetone;zeolite;catalyst

异丙苯法；苯酚；丙酮；沸石分子筛；催化剂

Catalytic oxidation process of low concentration phosphine with mixed solution of cobalt and Cuprum as catalyst is studied.

研究了以Co(上标 2+)与Cu(上标 2+)不同配比混合液为催化剂对低浓度PH3液相催化氧化净化的过程。

Methanimidamide monoacetate was synthesized by hydrogenation of cyanamide over Pd-In/C catalyst in the presence of acetate acid.

采用以活性炭为载体负载Pd、In制备的催化剂，在醋酸存在条件下，将氰胺加氢合成醋酸甲脒。

Urea-cyanamide method: With different catalyst, under the condition of some temperature and time, urea and ammonia manufacture cyanamide under normal pressure.

尿素-氰胺法：使用改性分子筛做催化剂，在一定温度和停留时间等反应条件下，在氨气气氛中，使尿素在常压下脱水一步制备氰胺。

The influence of catalyst on the copolymerization of epoxy and cyanate was investigated,and the mechanism of their copolymerization was discussed.

摘 要 研究了催化剂对环氧树脂与氰酸酯树脂的共聚固化反应行为的影响，并初步探索氰酸酯/环氧固化的反应历程。

The influence of a transition metal acetylacetone catalyst on the behavior, mechanism and product structure of the co-curing of epoxy and cyanate was studied by DSC and FT-IR.

应用DSC、FT-IR对乙酰丙酮过渡金属络合物催化促进的环氧树酯与氰酸酯共固化反应行为、历程以及固化物的结构特征进行了研究探讨。

In the result, we can promotion electrochemical activity and enhance stability of catalyst by cyclic voltammetry method.

藉由循环伏安法分析的结果显示，添加适当的钌、锡和钯金属触媒能有效提高电化学活性与增加触媒稳定性。

After 10 times of the catalyst recyling, the yield of cyclohexane is still above 99%.

经10次循环环己烷的产率都不低于99%。

Influences of the mole ratio of reactants,reaction time,dosage of catalyst and cyclohexane on yield are discussed.

考察了酸醇的物质的量比、反应时间、催化剂用量和带水剂用量等因素对酯收率的影响。

The optimal operation parameters of the novel catalyst for the process of benzene hydrogenation to cyclohexane were determined.

确定了适用于该新型催化剂的最佳的工艺操作条件。

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