查询词典 vanadium trioxide

And precipitation rate of vanadium was higher than 98.5%. Five vanadium catalysts were made withγ-Al_2O_3 and the mesoporous molecular sieve MCM-41 as carrier, and were made by dipping method, intermingle process and functionalizing method respectively. The characterization of their pore size, crystal structure, specific surface area and V_2O_5 load of catalysts were studied by XRD, the adsorption /desorption of N_2 technique, Raman spectroscopy and XRF. The activities of the catalysts estimated by the synthesis of DPC with DMC and phenol.

钒催化剂的制备与表征及活性评价：是分别以γ-Al_2O_3和介孔分子筛为载体，采用浸渍法，掺杂法及官能化法制备了5种钒催化剂；分别对其进行了XRD分析、N_2吸附-脱附分析、红外光谱分析和荧光分析，对其孔径、晶型结构、比表面积和V_2O_5负载量进行了表征；以碳酸二甲酯和苯酚的酯交换合成碳酸二苯酯的典型反应为依据，对钒催化剂进行了活性评价。

The oxide layer is predominantly TiO2, which contains a small amount of suboxides TiO and Ti2O3 between the outmost layer and metallic substrate. The XPS analysis confirms that Al2O3 is located mainly in the outer surface of the modified layers, in which vanadium and vanadium oxide are not detected.

结果表明：随着注入离子能量的增加， Ti6Al4V合金表面改性层的深度明显增加，改性层的外层由一定厚度的TiO2组成，外层与内层基体之间存在Ti2O3和TiO； Al元素在改性层的外层以氧化物形式存在，且该氧化物趋于表面生长；在表面改性层的外层未发现V及其氧化物。

The results showed the content of acid soluble fraction, reducible fraction, oxidisable fraction and total vanadium showed positive relationship with the adding vanadium in soil, while residual fraction kept constant.

结果表明，土壤中酸可溶态、可还原态、可氧化态钒及总钒与钒施加浓度呈正相关，残渣态钒含量保持稳定。

In acidic system, the solubility of vanadium was reduced because of the exisiting of insoluble vanadium oxide.

酸性体系中，固相中含有更不易溶的氧化钒，降低钒盐的溶解度。

The vanadium oxide films were characterized by X-ray diffraction and X-ray photoelectron spectra . It is found that the formation of vanadium oxide films was affected by substrate temperature and annealing time, because high substrate temperature and annealing were favorable to further oxidation.

采用X-射线衍射和X-射线光电子能谱对钒氧化物进行了表征，发现钒氧化物薄膜的形成受衬底温度和退火时间的影响，因为衬底温度以及退火有利于进一步氧化。

Hydrolysis of metal alcoholate;homogeneous precipitation;nanometer antimony trioxide;supersonic wave

冯晓苗；朱广军南京理工大学化工学院，江苏南京 210094 醇盐水解；均匀沉淀；纳米三氧化二锑；超声波

Trioxide antinomy can be dissolved in the solution of sodium hydroxide and glycerin to produce sodium antimonite containing glycerin.

甘油、木糖醇等低C多元醇，在有碱参与的条件下能与三氧化二锑很好地发生反应，生成甘油亚锑酸钠、木糖醇亚锑酸钠，溶液在一定的碱浓度下可保持稳定。

Antimony trioxide (Sb2O3) is a catalyst that is often used in the production of PET.

水的锑含量在 PET瓶里是有高些的，但在允许的最高浓度内。

We offer the following grades of Antimony Trioxide

我厂提供下列品级的三氧化二锑。

Objective: To explore the apoptosis rate of cell line K562 induced by combined arsenic trioxide with ascorbic acid for clinical application.

目的：观察维生素C与三氧化二砷相互联用时K562细胞株凋亡率的变化。

Continuously improve the production mechanism, to provide customers with better quality products and services.

不断的完善生产机制，给客户提供更优质的产品及服务。

B:Yes, he was the very prize-winner in the court tennis ten years ago?

是的，他是十年前的世界网球冠军。