查询词典 iodic anhydride

Methods Salicylic acid and acetic anhydride were used as the raw materials, with concentrated sulfuric acid as the catalyst.

目的 建立乙酰水杨酸的快速合成方法。

Moreover, the effects of moisture, solvent blank, added amount of acetic anhydride and temperature on determination were investigated.

同时，考察了水分含量、溶剂空白、乙酸酐加入量、温度对测定结果的影响。

The effects of the amount of catalyst, the amount of acetic anhydride, reaction time, and addition of solvents etc. on the acylation reaction were investigated.

考察了催化剂用量、乙酐用量、反应时间和溶剂的加入等因素对该酰化反应的影响。

It was found that H3PO4 is an effective catalyst for the acylation of 2,3-dimethyl-2-butene by acetic anhydride at room temperature.

结果表明，H3PO4是室温下催化2，3-二甲基-2-丁烯与乙酐酰化反应的有效催化剂。

This may be readily converted to the anhydrous salt by reaction with a readily hydrolysed material, such as acetic anhydride

这和易水解的物质如醋酸酐反应可以很容易转变为无水盐。

They are prepared starting from natural and renewable sources such as cotton flakes and wood pulp through an esterification process with acetic anhydride.

他们准备从自然和可再生能源如棉花片和木浆通过酯化反应过程的醋酸酐。

Translate methanol and carbon monoxide for acetic anhydride and acetic acid was important for chemical energy industrial of northern Shaanxi.

同时对加强醋酐的市场开拓、提高我国醋酐工业的整体水平有重大经济意义。

The catalytic esterification of acetic anhydride and nine phenols were investigated in the presence of complex resin catalyst at 20 ℃,and its mechanismes were discussed.

研究了 2 0℃时，醋酸酐与九种酚在复合树脂催化剂下的催化酯化反应，并探索了其反应的机理。

The synthesis of terpinyl acetate with terpineol and acetic anhydride as reactants and cerium sulfate as catalyst was studied.

研究了以Ce(SO4)2.4H2O为催化剂，松油醇和乙酸酐为原料合成乙酸松油酯。

The yields of peracetic acid is studied from two different preparation methods using hydrogen peroxide and acetic acid or acetic anhydride .

比较了用乙酸和乙酸酐分别与过氧化氢反应制备所得的过氧乙酸的浓度。

Through comparing with the results by simulation to study the effects of theprojectile"s final velocity, the angle of rotation and the ballistic trajectory"s migration withdifferent projectile"s rotating speeds, different target"s moving speeds and differentpenetration angles.

通过比较数值模拟的结果来研究不同弹头转速、目标速度、侵彻角对侵彻过程中弹头最终速度、翻转角度和弹道偏移的影响。

I love stationery and all the accoutrement of writing.

我爱文具以及所有的书写的工具装备。