查询词典 catalysis

Geranyl sulfone; Acid catalysis; One stage synthetic method

香叶基砜；酸催化；一步合成

The diisoamyl glutarate in catalysis of silicotungsticacid was preparated by esterification of isoamyl alcohol and glutaric anhydride seperated from dicarboxylic acid.

用硅钨杂多酸为催化剂，以从二羧酸中分离出的戊二酸酐和异戊醇为原料合成了戊二酸二异戊酯。

The release of carbon dioxide from glycerol carbonate provides the target product glycidol under the catalysis of sodium phosphate.

重点对碳酸甘油酯脱CO2得到缩水甘油的反应时间、反应温度、反应压力、催化剂种类及用量等因素进行了考察。

Then two star-shaped oligomers with designed molecular weights 5000 g mol-1 and 10000 g mol-1, respectively, were synthesized from D, L-lactide and glycolide as raw materials and pentaerythritol as initiator under catalysis of dibutyltin oxide.

以合成的丙交酯和乙交酯为原料，季戊四醇为引发剂，氧化二丁基锡为催化剂合成出设计分子量为5000和10000两种预聚物。

Heterogonous catalysis means the reactants and the catalyst are in different phases.

P41 异相催化指反应物和催化剂在不同的相中，相反，均相催化指反应物和催化剂在同一相中。

The reaction under the catalysis of 10%Fe_2O_3-MgO stoped quickly.It may be concluded that the Fe_2O_3/MgO sites,localized on Mg atoms,are acidic(presumably Lewis-type) in nature and that these results provide evidence for the heterolytic decay of the hydroperoxide to phenol and acetone.

采用共沉淀法制备了催化剂M_xO_y-MgO(M=Ni、Fe、Co、Cu)，并用X射线衍射仪、程序升温还原(H_2-TPR)以及X射线光电子能谱等对催化剂进行了表征，并与其催化性能进行了关联。

The catalysis of heteropoly acids in solid state has received much attention owing to their unique acidic and redox activities.

杂多酸作为固体酸催化剂以其优异的催化性能被广泛的应用在酸催化和氧化催化的各种反应体系中。

Heteropoly compounds have great utilities in catalysis because of their acidity and oxidation-reduction quality.

杂多化合物兼有酸性和氧化还原性，在催化领域中有着广泛的应用。

Heteropoly acid compounds characterized both oxidation and reduction, besides the less environmental pollution, so, to which is be paid more and more attention in catalysis field.

杂多化合物由于兼有酸性和氧化还原性，对环境污染少，在催化领域中受到越来越多的关注。

Mixed-addenda heteropolyacid ; catalysis ; 2-octanol ; hexa noic acid

磷、钼、钒多元杂多酸；催化作用；仲辛醇；己酸

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