水溶液氧化

The electropolymerization of Cobalt tetraaminophthalocyanine on gold electrode has been studied by cyclic voltammetry and electrochemical quartz crystal microbalance.

采用循环伏安法和石英晶体微天平技术对四氨基钴酞菁在金电极上的聚合成膜过程进行了研究，考察了扫描速度、溶剂、支持电解质及单体浓度对其成膜过程的影响，同时初步探讨了聚合膜分别在非水溶液和水溶液中的氧化还原行为及稳定性，其中借助EQCM重点讨论了在这些过程中溶液中离子在膜中传输的机理。

The effect of aqueous ethanol (50% v/v) on the activity of purified mushroom polyphenol oxidase has been found to be as follows:(1)The oxidation of catechol or pyrogallol is greatly stimulated,an increase in the rate of oxygen uptake of over 100% having been invariably observed with catechol as the substrate,whereas the oxidation of other substituted o-dihydric phenols is inhibited in 50% ethanol.

三无论有无抗坏血酸的存在，50%乙醇对多酚氧化酶活力的提高程度是一样的，在有一定量的抗坏血酸的存在下，多酚氧化酶对儿茶酚的 Michaelis 常数(25℃)在水溶液及50%乙醇溶液中各为0.072×10~(-3)M 及0.49×10~(-3)M。

The dispersion mechanism of the dispersants was analyzed by testing the Zeta potential of the dispersion phase in the dispersion medium. It was shown that Ⅰ and Ⅱ raised obviously the absolute values of surface Zeta potential of titania particles, and NK-1 formed good solvate layers of the particles so that the nano-titania particles were stably dispersed in the water solns.

通过测定分散相在分散递质中的Zeta电位，分析了分散剂的分散机理，说明六偏磷酸钠和硅酸钠可显著提高整理液中二氧化钛颗粒表面Zeta电位的绝对值，NK-1在纳米二氧化钛颗粒表面形成良好的溶剂化层，使纳米二氧化钛颗粒在水溶液中获得优良的分散稳定性。

At present,the rate laws and reaction mechanisms of pyrite oxidation,pyrite and chalcopyrite formation,uraninite and magnetite dissolution in aqueous solutions are mainly studied,and it is discovered that (1)oxidation rate of pyrite controlled by surface reaction assume fractional dependence on Fe3+ and O2 molalities in acid solutions;(2)Pyrite cannot nucleate directly from solutions below 300 ℃,it can only form initially through sulfidation of a FeS precursor. The rate equation of reaction between FeS and H2S to form pyrite is of the second order;(3)Chalcopyrite is formed by reactions of pyrrhotite or pyrite with Cu2+,the former proceeds via a series of mediate metastable phases of Cu-Fe sulfide,whereas the rate equation of the latter is apparently of the first order which is controlled by surface reaction;(4)The nonlinear behavior of magnetite dissolution at acid pH can be represented by a shrinking core model coupling with surface reaction and diffusion transport.

目前主要研究了水溶液中黄铁矿氧化、黄铁矿和黄铜矿形成、晶质铀矿和磁铁矿溶解的速率定律和反应机理，发现：(1)酸性溶液中黄铁矿的氧化速率对Fe3+和O2浓度呈分数依赖并受表面反应的控制；(2)低于300 ℃时黄铁矿不能从溶液中直接成核，而需初始地通过FeS先驱物的硫化生成，FeS与H2S反应形成黄铁矿的速率方程为二级；(3)磁黄铁矿或黄铁矿与Cu2+反应均可形成黄铜矿，前者经历了一系列准稳的Cu-Fe硫化物的中间物，后者的速率方程为表观一级并受表面反应的控制；(4)酸性pH时磁铁矿的非线性溶解行为可采用表面反应扩散输运耦合的收缩核模型来描述。

The results show that the TiO2 porous films can be obtained by anode oxidation using 10% H2SO4, voltage of 120V on the surface of Ti-6Al-4V alloy, and the aperture size is about 100-200nm. The acerate CaHPO4 with size of 200-400nm can be gained by the electrochemical deposition. Ultimately, the acerate CaHPO4 changed to the sheet Ca10(PO4)62 after being treated with 0.1mol/L NaOH in autoclave at 200℃ for 10 hours .

结果表明：钛合金（Ti-6Al-4V）板经以10％的硫酸为电解液和电压为120V时阳极氧化，产生孔径大约为100-200nm的多孔氧化膜，再经电化学沉积，得到尺寸大小约200-400nm针状的CaHP04，最后经盛有浓度为0.1mol/LNaOH 水溶液、温度为200℃的高压釜中水热合成10h，针状的CaHP04 转变为片状的Ca10(PO4)62。

On the condition of using fatty acids of rapeseed oil as raw material,85% acetic acid as solvent, pelargonic acid as recrystalization solvent, this paper prepared azelaic acid and brassylic acid by ozonolysis ,oxidation decomposition ,recrystallization etc.

以蓖麻油酸为原料、85%醋酸水溶液为溶剂，经臭氧化、氧化分解、沸水萃取等过程制备壬二酸的最佳反应条件为：m：m(85%醋酸)=1：4，臭氧化温度20-25℃；氧化分解温度90-95℃，催化剂醋酸锰/醋酸铜用量为原料蓖麻油酸质量的0.09%，氧化分解4h，壬二酸的收率为62.5%。

Factors were reviewed, and optimum conditions was obtained,these experiments provide effective data for industrial manufacture.On the condition of using fatty acids of cottonseed oil as raw material,85% acetic acid as solvent,this paper prepared azelaic acid and pelargonic acid by ozonolysis, oxidation decomposition , extracted by boiling water,active carbon absorpting etc.

以棉油酸为原料、85%醋酸水溶液为溶剂，经臭氧化、氧化分解、沸水萃取、活性炭吸附脱色等过程制备壬二酸的最佳反应条件为：m：m(85%醋酸)=1：4，臭氧化温度20-25℃；氧化分解温度90-95℃，催化剂醋酸锰/醋酸铜用量为原料棉油酸质量的0.15%，氧化分解4h，壬二酸收率为57.4%，壬酸收率为51.6%。

Three methods for trimellitic anhydride production including MGC,nitric aid oxidation,and liquid phase oxidation by air were compared.

比较了生产偏苯三酸酐的3种方法：芳香醛水溶液空气氧化法、硝酸氧化法和液相空气氧化法。

In the last part three new types of ion-supported TEMPO catalysts were synthesized and could be used to catalyse selective oxidation of alcohols in water.

三、合成了三个离子支持的TEMPO 催化剂，将其与离子支持的二乙酸碘苯结合催化水溶液中醇的选择性氧化，提供了一个在水溶液中催化剂和氧化剂均可回收使用的绿色体系。

The said cellulose solvent may be used in dissolving natural cellulose and regenerated cellulose via mixing with cellulose, freezing and defreezing; or, it is first cooled to -10 deg.c to 0 deg.c and then maintained in -8 deg.c to 0 deg.c to dissolve natural cellulose and regenerated cellulose directly.

这种氢氧化锂和硫脲的混合水溶液可以通过与纤维素混合后冷冻然后解冻的方法溶解天然纤维素和再生纤维素；也可以预先将该混合水溶液冷却至-10℃～0℃，然后维持在-8℃～0℃左右直接溶解天然纤维素和再生纤维素。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。