查询词典 acetylacetone

A novel method for the determination of trace bromate in water is proposed which employ GC-ECD. The derivative process with acetylacetone is optimized.

研究了用GC-ECD测定水中痕量溴酸盐浓度的方法，优化了用工程丙酮作溴酸根衍生化试剂的反应条件。

The influence of a transition metal acetylacetone catalyst on the behavior, mechanism and product structure of the co-curing of epoxy and cyanate was studied by DSC and FT-IR.

应用DSC、FT-IR对乙酰丙酮过渡金属络合物催化促进的环氧树酯与氰酸酯共固化反应行为、历程以及固化物的结构特征进行了研究探讨。

At first by reaction of TiCl〓 with β-diketone (acac: acetylacetone, facac: 1, 1, 1-trifluoroacetylacetone) ligand to yield two kinds of Ti (β-diketone)〓Cl〓, then they are complexed proportionally with Co 〓 or Ni 〓 through different method to get two-metal catalyst precursors.

另外采用具有不同性能两种或多种金属催化剂复合制得催化剂，使其具有多活性中心的综合性能，发挥各金属活性中心的协同作用，已经在聚烯烃的研究工作中深入开展。

Solid bases, quantity of acetylacetone, quantity of sodium hydroxide, and grinding time were investigated.

考察了碱的种类，乙酰丙酮的量，NaOH的量，以及研磨时间对产率的影响。

The simulation results show that the free energy of hydrogenation of acetylacetone iron to prepare enol-acetylacetone is less than that of the reaction to produce keto-acetylacetone at the same temperature.

计算结果表明：相同温度下，乙酰丙酮铁加氢生成烯醇式乙酰丙酮的反应自由能小于生成酮式结构乙酰丙酮的反应自由能；乙酰丙酮铁加氢更倾向于生成烯醇式结构的产物。

Gibbs free energy of the hydrogenating reaction of acetylacetone iron to produce pure iron and acetylacetone was investigated according to the frequency analysis results.

根据频率分析结果，计算不同温度下乙酰丙酮铁加氢生成铁和乙酰丙酮两种互变异构体的吉布斯自由能。

At the same time,research contents and aim of the synthesis of acetylacetone by high activity MgO at low temperature were described in detail.The technology has some features such as moderate reaction condition,low energy consume and little by-product.The purity and yield of acetylacetone were 99.5% and 95% respectively,so both the economic and social profit are very remarkable.

同时，详述了采用高活性氧化镁为催化剂，低温催化合成乙酰丙酮工艺的研究内容和方向，该工艺反应条件温和，能耗低，副产物少，乙酰丙酮收率达到95%，产品纯度99.5%，经济效益和社会效益均十分显著。

Basing on above researches, we designed a series of ionic liquid supported acetylacetone metal catalysts and non ionic liquid supported acetylacetone metal catalysts. The catalytic abilities of these catalysts were evaluated by using them to catalyze the methane oxidation reaction.

在以上研究的基础上，本论文设计了系列离子液体支载的乙酰丙酮金属催化剂及非离子液体支载的乙酰丙酮金属催化剂，并通过这些催化剂对甲烷氧化反应的催化效果来预测它们的活性。

Supporting the acetylacetone on ionic liquid was established for the purpose of catalyst recycling. The following works focused on what kind of supporting methods can enhance the catalytic ability of acetylacetone.

从提高催化剂可回收性方面考虑，论文计划将乙酰丙酮支载在离子液体上，接下来研究采用怎样的离子液体如何支载能够提高催化剂的催化氧化活性。

Three kinds of ionic liquid were used to support the acetylacetone at the C3 position directly according to the method indicated above. These synthesized ionic liquid supported acetylacetone catalysts include imidazolium salts ionic liquid supported acetylacetone catalysts, pyridinium salts ionic liquid supported acetylacetone catalysts and ammonium salts ionic liquid supported acetylacetone catalysts. All these catalysts were characterized by ~1H-NMR,~(13)C-NMR, IR and elementary analysis.

采用设计过程中预期能够提高乙酰丙酮金属催化剂催化氧化活性的修饰方式，合成了三类离子液体支载的乙酰丙酮金属催化剂：咪唑型离子液体支载乙酰丙酮金属催化剂、吡啶型离子液体支载乙酰丙酮金属催化剂、胺型离子液体支载乙酰丙酮金属催化剂，并采用核磁共振氢谱、碳谱，红外光谱及元素分析来对这些新型的催化剂进行了表征。

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。