查询词典 sulfuric acid

A biomass hydrolyzing process for producing glucose was investigated,through concentrated sulfuric acid hydrolysis of wood chips.

以木屑为研究对象，进行浓硫酸水解，得到产物单糖。

The optimum hydrolytic condition for crude drug was: zymolysis at 39℃for 72 hours, hydrolysis at 90℃with 5% sulfuric acid for 6 hours under natural pressure; The reserved time of diosgenin was about 10 minutes under its chromatograms conditions, and the R-value between the main peak and the nearby peak was bigger than 2, which means reaching the standard of chromatograms separation.

生药材的最佳水解条件是：在39℃恒温箱中发酵72 h，加硫酸至5%，90℃水浴中常压水解6 h。

The use ofβ-cyclodextrin can make oximation of acetylacetone happened without sulfuric acid and at high temperature.

9使用环糊精催化乙酰丙酮肟化反应，可在不使用硫酸，较高温度下实现乙酰丙酮的肟化反应。

The use ofβ-cyclodextrin can make oximation of acetylacetone happened without sulfuric acid and at high temperature.

使用环糊精催化乙酰丙酮肟化反应，可在不使用硫酸、高温下实现乙酰丙酮的肟化。

The chemical method include treating with sulfuric acid,saponification,acylation, esterification, etc.

化学方法包括酸洗法、皂化法、酰化法和酯化法等。

Uses the strong sulfuric acid anthrone determination kelp polysaccharide the content, mainly uses the single factor experiment definite orthogonal experiment, makes the microwave radiation time, the liquid-solid separately compared to, the ph value as well as the extraction temperature to the kelp polysaccharide extraction quantity influence, determines the best experimental condition again by the orthogonal experiment.

采用浓硫酸蒽酮测定海带多糖的含量，主要利用单因素试验确定正交实验，分别做出微波辐射时间、固液比、ph值以及提取温度对海带多糖提取量的影响，再以正交实验来测定最佳实验条件。

And take six aquation hydrogen nitrate zinc as raw material , add the ammonium sulphate being unlike thickness respectively, the method adopt a microwave to heat comes to the preparation zinc oxide , discuss with sulfuric acid ion concentration changing to zinc oxide structure and shape appearance effect.

以六水合硝酸锌为原料，分别加入不同浓度的硫酸铵，并采用微波加热的方法来制备氧化锌，探讨随着硫酸根离子浓度的改变对氧化锌结构及形貌的影响。

Learn three important sulphonation processes, the emphases are the method of excessive sulfuric acid sulphonation and the azeotropy dewater sulphonation.

了解三种重要的磺化生产工艺，重点介绍硫酸作磺化试剂的过量硫酸磺化法和共沸去水磺化法的工艺。

The proton exchange of the polarized benzoquinone radical in solution c ontained sulfuric acid was studied.

研究了含硫酸溶液中极化的苯醌自由基与溶液中的质子发生的交换现象。

Their specific optical rotation is higher than 1, 1'-binaphthyl monomer in concentrated sulfuric acid, and increased with the excess enantiomer percentage of monomers increased, but the direction of rotation is not same with their monomer.

它们的结晶度较低，在浓硫酸中的旋光活性远大于联萘单体，其旋光值与聚合物手性单元的过量比例成线性关系，但旋光方向却与单体不同。

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。