水溶液氧化

The mechanism of dioxygen oxidation of 4-nitrotoluene-2-sulfonic acid to 4,4'-dinitrostilbene-2,2'-disulfonic acid in alkali solution under mild condition was investigated.

探讨了在温和条件下在碱的水溶液中氧气液相氧化 4-硝基甲苯- 2 -磺酸制取 4，4'-二硝基二苯乙烯- 2 ，2 '-二磺酸的反应机理，发现 4-硝基甲苯- 2 -磺酸在碱作用下发生离子化生成 4-硝基- 2 -磺酸基苄基阴离子，然后被活化的分子氧氧化成 4-硝基- 2 -磺酸基苄基自由基是反应的关键步骤。

The pores were hexagonally ordered and narrowly diameter-distributed (95±13 nm in comparison with those produced with normal electrolytes using water as the sole solvent

结果表明，有机溶剂贫水电解质体系使得电氧化电压的选取范围比水溶液电解质体系更宽，孔径连续可调，反应条件温和。

The effect of lanthana doping and polyethylene glycol as gelatinization aid on the thermostability and BET surface of active A12O3 prepared by means of sol in water solution.

研究水溶液成胶制备氧化铝过程中，掺杂氧化镧及利用聚乙二醇助成胶对氧化铝热稳定性和比表面的影响。

Experimental results indicate that a kind of lignosulphonate, which has a water reducing rate of 15.2%, with —OH and —SO3 groups, can be obtained by oxidation and sulphonating straw pulp lignin, and that MLP has better adsorption-dispersion ability to cement grains by electrostatic repulsion.

论文摘要：为开发利用草浆碱木素，通过引发氧化和磺化制备了改性草浆碱木素减水剂，测定了MLP的红外光谱、MLP在水泥颗粒表面的吸附量、水泥ζ-电位、MLP水溶液的表面张力及掺MLP的水泥净浆流动性，并测定了掺MLP的混凝土性能。

The precursor of sodium titanate nanotubes is prepared by: reacting titanium dioxide, metatitanic acid or titanate ester in 20-80 wt.% NaOH aqueous solution at 100-140 deg.C for 12-72 h, washing with water, filtering and drying.

用于反应的前驱体纳米管钛酸钠由二氧化钛、偏钛酸或钛酸酯与20-80wt％NaOH水溶液在100-140℃反应12-72h后用水洗去NaOH，过滤、干燥制成。

Then obtain heavy magnesium water solution, add interfacial active agent and ammonia to solution, via hydrothermal treatment and filtration washing, dry to gain nemaline magnesium hydroxide.

得到重镁水溶液，向溶液中加入表面活性剂和氨水，经过水热处理，过滤洗涤后、干燥得到纤维状氢氧化镁。

In this paper, the carbon nanotubes made by CVD were purified by acid solution. Results indicate that the ports of CNTs were oxidated and opened up, the surface of CNTs bring a lot of oxygenous functions, which was useful for dispersion of CNTs in the water solutions.

采用液相氧化法对CVD法制备的碳纳米管进行了提纯，结果表明，经过提纯后碳管的端口被打开且表面产生了大量的含氧官能团，使其在水溶液中的分散性得到了改善。

The photooxidative degradation of Direct Fast Scarlet dyes in aqueous solution under solar irradiation by H 2O 2/ferrioxalate complexes has been studied.

以 H2 O2 /草酸铁络合物作光氧化剂，利用太阳光对水溶液中的直接耐酸大红进行了光氧化降解试验研究。

Reparation of PBO was begun with the polymerization process in which composite salts that contained 4,6-diaminoresorcinol and terephthalic acid were dissolved in polyphosphoric acid and phosphorus pentoxide.

BO纤维制备：以4，6-二氨基间苯二酚的盐酸盐为单体原料，与对苯二甲酸混合，经过中和反应、脱色处理、干燥后制成复合盐；再以多聚磷酸为溶剂，添加五氧化二磷和抗氧化剂，经过预聚合反应制备出PBO聚合物；聚合物通过双螺杆挤出机进一步进行聚合，然后通过喷丝板挤出，在磷酸水溶液中凝固成型，经过洗涤、干燥等过程，最终卷绕成型。

The self-oxidation of pyrogallic is studied in the vesicle solution, DSB aqueous solution, and AOT aqueous solution, respectively.

在DSB/AOT自发形成的囊泡体系中，首先分别测定了相同盐度下单纯的DSB和AOT水溶液分别对邻苯三酚自氧化的影响。

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。