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UV-Vis spectra show that the absorbance values at characteristic wavelengths of the multilayer films increase almost linearly with the number of chitosan/PTA bilayers, suggesting that the deposition process is regular and highly reproducible from layer to layer. XPS and FTIR spectra confirm the incorporation of chitosan and PTA into the films. AFM images indicate that the surface of the multilayer films is rough. The result of CV shows that the multiplayer films maintain good electrocatalytic activity of phosphotungstate acid.

UV-Vis结果显示多层膜在特征吸收峰处的吸光度数值随膜双层数增加逐渐增大,呈良好的线性关系,表明多层膜是均匀组装的;XPS和FTIR结果证实了壳聚糖和磷钨酸被组装到膜上,AFM图形显示膜表面有一定的粗糙度,CV结果说明多层膜保留了磷钨酸的电化学性质。

The phosphotungstic acid was used to degrade the methyl orange solution with ultraviolet radiation.

以磷钨酸为光催化剂,在紫外灯照射下,对甲基橙溶液进行光催化降解,考察了几种阴阳离子对磷钨酸光催化降解甲基橙溶液的影响。

Using cyclohexanol as raw material, in presence of sodium tungstate and phosphotungstic acid as catalyst, the technique for oxidizing cyclohexanol to cyclohexanone with hydrogen peroxide were discussed.

以环己醇为原料、钨酸钠和磷钨酸配合为催化剂,探讨了双氧水为氧化剂氧化环己醇合成环己酮的工艺方法。

Kinetics characteristics of α- pinene isomerization catalyzed by activated carbon supported phosphotungstic acid was studied .

研究了活性炭固载磷钨酸催化α-蒎烯的异构化反应的动力学特征,研究表明,以环己烷作溶剂,α-蒎烯在活性炭固载磷钨酸上的异构化服从准一级动力学模型,其反应的表观活化能为100。

Catalyst system of phosphotungstic acid and tartaric acid or phosphotungstic acid and 4-amino-antipyrine can be reused five times and the yield was still 93.1% and 80.6%, respectively.

钨酸-酒石酸钾钠和磷钨酸-4-氨基安替比林催化体系重复使用5次后,产率仍分别达到87.1%和80.6%。

The measured ammonium tungstate or yellow tungstenic acid and a latent solvent are dissolved in hot water; then the mesoporous TiO2 nanometer tube carrier is added; the WO3/TiO2 nanometer tube catalyst is prepared by the steps of vaporizing, drying, baking and activating, etc.

将计量的钨酸铵或黄钨酸和助溶剂溶于热水中,然后加入介孔TiO 2 纳米管载体,经蒸发、烘干、焙烧活化等步骤即制得WO 3 /TiO 2 纳米管催化剂。

And the morphologies of lead tungstate crystal were different when different surfactants of polygycol 200 and cetyltrimethyl ammonium bromide were added in the experiments.

钨酸钠和醋酸铅为原料,分别加以表面活性剂聚乙二醇200和十六烷基三甲苯溴化铵,用沉淀法合成出钨酸铅纳米晶和菱形微晶。

The present invention prepares aldehyde or ketone by catalytic oxidation of alcohol under microwave irradiation, which takes sodium tungstate and tungstic heteropolyacid salts as catalyst, takes bidentate ligand containing nitrogen and oxygen as additive and takes hydrogen peroxide as preparing oxidant.

本发明以钨酸钠和钨的杂多酸盐为催化剂,以含氧氮的双齿配体作为助剂,以双氧水为氧化剂,在微波辐照下催化氧化醇制备得醛或酮。

The mechanisms of stability of the sols and film formations were discussed.

本文以钨酸钠阳离子树脂酸化法制备三氧化钨溶胶,采用提拉法成膜。

The effect of several ions on photocatalytic degradation of methyl orange solution was investigated in detail.

以磷钨酸为光催化剂,在紫外灯照射下,对甲基橙溶液进行光催化降解,考察了几种阴阳离子对磷钨酸光催化降解甲基橙溶液的影响。

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。