丙酮的

The current technologies of cumene process were introduced and commented in this paper,including particular...

本文简要介绍了我国异丙苯法生产苯酚丙酮的现有技术，并对以沸石分子筛为催化剂的异丙苯法生产苯酚丙酮的生产工艺进行了详细探讨。

Because it needs many kinds of acid and organic reagents, cumene peroxidation process brings the problems of wasting materials and environment pollution.

但是丙酮的市场需求量的增长远小于苯酚，因此以此法合成苯酚受丙酮的市场制约。

Objective To determine the contents of residual acetone in acetoacetic ester,the raw material for the synthesis of Edaravone, by gas chromatography.Methods Sample solution was injected on a GDX column (0.18 mm～0.25 mm) with nitrogen as the carrier gas.The residue was calculated by the external standard method.

摘要］ 目的：用气相色谱法测定依达拉奉合成起始原料乙酰乙酸乙酯中丙酮的残留量方法：采用固定相二乙烯苯乙基乙烯苯型高分子孔小球（直径为0.18 mm～0.25 mm），氮气为载气，用外标法测定乙酰乙酸乙酯中残留丙酮的含量。

Based on the application and study situation,problems of synthesis process of acetylacetone and its development were studied.

针对乙酰丙酮的应用前景和研究现状，研究了目前乙酰丙酮合成工艺中存在的问题和发展趋势。

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 precursor solutions of titanium alkoxide with different amount of AcAc were characterized by DTA to study the chelating process of titanium alkoxide with AcAc.

对含有不同量乙酰丙酮的前驱体溶液做了热重分析，研究了钛酸丁酯与乙酰丙酮的螯合过程。

The synthesis of l-(4-acetylaminophenyl)-2-bromo-1-propanone was discussed, and the mechanism and possible factors were analyzed. Hence the routine was determined, in which l-(4-acetylaminophenyl)- 1-propanone was reacted with Bromine dissolved in ethanol, so that the a -bromination can be carried on, resulted in the yield of up to 70.4%.

探讨了1-(4-乙酰胺基苯基)-2-溴代-1-丙酮的合成方法，分析了反应机理和影响因素，确定将1-(4-乙酰氨基苯基)-1-丙酮溶解在乙醇中以溴的乙醇溶液进行α-溴化的合成路线，产率可达70.4％。

In this paper, the structures of methylglyoxal and 1,1-dimethoxy-2-propanone are identified by GC-MS, NMR and the standard samples. The reaction conditions of catalyst oxidation and acetalation according to reaction mechanisms are discussed.

本文运用质谱、核磁和标样确定了中间体丙酮醛及其产物1，1-二甲氧基丙酮的结构，并结合反应机理对催化氧化和醛保护的反应工艺条件进行了探索。

The effects of water content and chlorine mass flow rate on the selective monochlorination were investigated.

采用填料塔作为氯化反应器，在塔内全回流的丙酮与氯气进行反应，实现了丙酮的高选择性一氯化。

The factors which mostly affect the quality and output of the product including molar proportion of reagents, reaction temperature, alkaline concentration and reaction time are analyzed. After orthogonal experiment, it is concluded that the optimized reaction condition is that acetone and furfural are charged with equal molar quantities at 40 with sodium hydroxide (0.10 mol/L) and the operation time 5 h.

通过对影响亚糠基丙酮质量和收率的主要因素原料配比、反应温度、碱浓度、反应时间等单因素实验，探索出合成亚糠基丙酮的优化反应条件为：原料配比n：n=1.0：1.0、反应温度40℃、氢氧化钠溶液浓度为0.01 mol/L、反应时间5h。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。