查询词典 sulfuric acid

Indirect electrosynthesis of ochlorobenzaldehyde from ochlorotoluene was carried out using ceric/cerous in sulfuric acid as a mediator.

用硫酸做介质、Ce4 + Ce3+做氧化媒质间接电合成邻氯苯甲醛。

Key words: collophanite; mineral beneficiation; flotation; adoption of low grade thermal energy in sulfuric acid plant; reducing steam consumption

胶磷矿；选矿；浮选；硫酸低位热能利用；降低蒸汽消耗

In addition, analysis was carried out in the differences of the water extract, effective component polysaccharide and the icariin distilled rate from the commonly cribble and the ultra-fine powder by weighing, anthrone-sulfuric acid method and RP-HPLC.

此外，还应用称重法、蒽酮-硫酸法以及反相高效液相色谱法分别比较分析了微粉与粗粉的总浸出物、有效成分多糖以及淫羊藿苷溶出率的差异。

R-1,c-2, t-3, t-4-1,3-bis(4-biphenyl)-2,4-di(4-pyridyl)cyclobutane was obtained in diluted sulfuric acid by photodimerization reaction.

通过反-1-(4-联苯基)-2-(4-吡啶基)乙烯在稀硫酸中的光二聚反应合成了r-1，c-2，t-3，t-4-1，3-双(4-联苯基)-2，4-二(4-吡啶基)环丁烷。

Ketoheptamethylenimine was prepared by one-pot reaction of cycloheptanone with concentrated sulfuric acid. In this step, oximation and rearrangement occurred .

制备庚内酰胺时，我们采用了&一锅反应&的方法，环庚酮、浓硫酸和硫酸羟胺混合在一起，经过肟化、重排一次得到庚内酰胺。

With the phenol sulfuric acid method determines Cynomorium songaricum Rupr polysaccharide, OH was produced by Fenton reaction, and O2(superscript -) was produced by the oxidation of pyrogallic.

实验中采用苯酚－硫酸法测定锁阳多糖，在自由基由Fenton体系产生，超氧自由基O2(上标-由邻苯三酚自氧化体系产生。

Condensation of resorcinol or phloroglucinol with sodium hydrogen malate in the presence of catalytic sulfuric acid leads to the synthesis of natural bioactive umbelliferone and daphnetin under microwave irradiation.

在适量硫酸的存在下，用微波辐射合成了天然活性香豆素伞形花内酯和瑞香内酯。

The combination of dilute sulfuric acid and organic solvent has been developed to demulsify the highly stable polystyrene microemulsion. 2. The degree of sulfonation was quantified based on the infrared spectra. 3. The superfine sulfonated polystyrene particles and the crosslinked polyvinyl alcohol films imbedded SSPS particles were employed to conduct out the adsorption for cationic red dye (5GN), and showed a satisfied results.

本课题的特色与创新之处： 1、独创了采用稀H2SO4和有机溶剂对聚苯乙烯微乳液混合破乳的方法； 2、基于红外光谱测量，定量计算出聚苯乙烯磺化度； 3、在国内外较早地开展了超细聚苯乙烯型离子交换树脂及其离子交换膜对阳离子染料的吸附作用的研究。

The study of microwave-aided leaching deepens our understanding of desiliconization mechanism in leaching and presents a valuable reference for research of microwave hydrometallurgy and sulfuric acid leaching of high silica zinc oxide ores.

微波辅助浸出工艺的研究，加深了矿石浸出过程除硅机理的认识，为氧化锌矿的硫酸浸出工艺和微波湿法冶金研究提供了很有价值的参考。

This dissertation studied the electrode process of direct electroreduction nitrobenzene to /j-aminophenol on different electrodes in sulfuric acid systems. The synthetic technology has also been discussed in this dissertation.

本文以硝基苯为原料，在硫酸体系中，研究了不同电极材料上直接电还原合成对氨基苯酚的电极过程，并对其合成工艺进行了探讨。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。