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BiVO_4 nano-film was fabricated by modified metalorganic decomposition technique and the photocatalytic activity of these photocatalysts was evaluated.

本研究采用改进的金属有机物分解法制备了BiVO_4纳米膜,将其应用于可见光光电催化降解环境污染物的研究中,并通过对其改性提高了其光电催化降解污染物的能力。

The optimal reaction parameters of methanolysis of soybean oil by lipase-catalysis weredetermined as follows: 15wt% of lipase, 55℃of temperature, petroleum ether as solution,methanol was added by 6 times.

对酶法催化豆油和地沟油的对比没有显著差异,说明脂肪酶是催化游离脂肪酸含量高的油脂生产生物柴油的有效催化剂。

Was applied to the AD reaction of eight olefins in PEG/NMO system according to the protocol of ligand 8. The yields and ees of the diols were 70~90% and 77~96%(except for trans-5-decene and ally naphthyl ether) respectively.

在与8相同的催化反应条件下,手性配体9催化八种烯烃的AD反应得到的化学产率和ee值分别为70~90%和77-96%(反式-5-癸烯和萘基烯丙基醚除外)。

We discuss the mechanism of trimerization of nitriles catalyzed by organolithium compounds and study the catalystic characteristics. Using this new method, the yield of triazines is greatly improved.

另外,实验探讨了有机锂化物对芳香腈三聚反应的催化作用,得到了较高的产率,同时,研究了它的作用机理和催化性能。

In order to improve the electrocatalytic activity of the anode in the Direct Methanol Feul Cell, three kinds of transition metal substituted phosphomolybdic acid modified platinum electrodes were prepared, and the electrochemical behavior in the sulphuric acid solution of transition metal substituted phosphomolybdic acid modified platinum electrodes and their electrocatalytic effects of methanol oxidation were studyed. The anti-poison effect to carbon monoxide of the prepared electrodes were studied by the carbon monoxide adsorbing.

为了提高直接甲醇燃料电池阳极催化活性,本文研究了三种过渡金属取代磷钼酸修饰铂电极在硫酸溶液中的电化学行为及对甲醇的电催化氧化作用,并利用一氧化碳吸附实验评价了三种过渡金属取代磷钼酸修饰铂电极的抗一氧化碳毒化性能。

Because the tungsten from the phosphotungstic acid could pull out and deposit on the surface of catalyst, and the electronegativity of Mo-O is smaller than that of W-O.

最后,根据杂多酸的结构和相应的物理化学性质,对杂多酸与铂基催化电极电催化氧化甲醇的机理进行了初步探讨。

The study of deactivation and regeneration of TiO2/ITO film and TiO2/glassfilm showed photoactivity decreased 25%, 12% after 10 runs, but the former was still higher than the latter at first.

使用10次后,TiO2/ITO膜和TiO2/glass膜的光催化活性分别降低了25%和12%,但此时前者的光催化活性仍高于后者初次使用时的活性。

The product had a nanometer size (average particle size 13 nm) and strong absorption in the range of 200 to 580 nm, and the visible-light photoactivity of CdIn2S4 was tested via degradation of an aqueous methyl orange and compared with CdS.

通过染料甲基橙的光催化降解反应,详细研究纳米尺寸 CdIn_2S_4的可见光光催化活性,并与用相同方法合成的 CdS 进行对比。

The photoreductive reactions prove that the natural sphalerite sample exhibits a high photoactivity on reducing methyl orange under visible light irradiation, which is consistent with its specific characterization.

与其特殊的物理化学性质相符,天然闪锌矿光催化还原降解甲基橙的实验证明了其较高的可见光催化还原活性。

The mixture phase of anatase and rutile showed the highest photoactivity, and the photoactivity for rutile was most low, due to that more hydroxyl radicals were detected in the suspension of mixture phase of anatase and rutile.

混晶样品具有最高的光催化活性,金红石光催化活性最差,这主要是因为混晶样品在可见激发下所产生的羟基自由基最多,而金红石样品能够生成的羟基自由基最少。

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