查询词典 acetylacetone

It was shown that all of the four β-diketones tested, acetylacetone, trifluoroacetylacetone, benzoylacetone and 1-phenyl-3-methyl-4-benzoylpyrazolone-5, improved the sensitivity of Al to some extent.

结果表明，四种螯合物对Al的分析性能均有一定程度的改善。

The process was controlled by diffusion and irreversible. Pb(superscript 2+) transferred from water to acetylacetone to form Pb2 with dithizone.

实验证明，该过程是受扩散控制的不可逆过程，Pb(上标 2+)由水相转移到有机相中，与双硫腙形成络合物Pb2。

The result indicated that manganese chloride,acetylacetone,sodium hydroxide,were grinded for 15 mins at room temperature with the molar ratio of 1∶4∶1.8,the yield of manganese ac...

结果表明：氯化锰、乙酰丙酮、固体NaOH按1∶4∶1.8的摩尔比，在室温下研磨15 min所得产率最高，产率为68%，比传统液相法的产率(25%)高出43%。

Taking advantage of better solubility and thermal stability of ionic liquid, the ionic liquid supported acetylacetone catalyst can be simply recycled by water washing or vacuumdistillation.The background of this research is renovation on the traditional oxidation reactions by green chemistry principle.

根据离子液体支载催化剂的两个特性：在水中良好的溶解性和具有很好的热稳定性，在反应结束后通过水洗涤或精馏的方法，很方便的对催化剂进行了回收再利用。

METHODS Acetylacetone, 4－Dimethylaminobenzaldehyd and alcohol without aldehyde were used as color reagents. The determination method was colorimetry.

以乙酰丙酮、无醛乙醇和对二甲氨基苯甲醛溶液为显色剂，用比色法测定。

The optimal idle time of polyreaction and gel time can be determined by changing initiator content,temperature and acetylacetone content to make sure the casting process can be done successfully.

通过改变引发剂用量、环境温度以及缓凝剂用量可以控制聚合反应的诱导期，从而保证浇注过程的顺利进行，有利于制备均匀性好、致密度高的反应烧结B_4C/SiC陶瓷坯体。

The neodymium acetylacetone could accelerate the curing ofDDS/epoxy resin system significantly, and the toughness of the cured resin wasimproved in some conditions.

乙酰丙酮钕对DDS固化环氧树脂有显著的促进作用，在适当的固化条件下能明显提高树脂的断裂韧性。

The voltammetric behavior of Pb facilitated by dithizone (DzH2) across the water/acetylacetone interface was investigated by cyclic voltammetry.

用循环伏安法研究了双硫腙络合推动Pb2＋在水/乙酰丙酮界面迁移的伏安过程。

Instructed by this method, the structure-reactivity relation of the oxidation reaction catalysts was found and a way was proposed to enhance the catalytic ability of traditional acetylacetone catalysts by supporting them on ionic liquid.

在该方法的指导下，发现了氧化催化剂结构活性关系，提出了一套用离子液体支载来提高乙酰丙酮金属催化剂催化氧化活性的方案。

The role of the solvents played in the reaction process was explored, which showed that acetylacetone was the reductant while ethylene glycol was performed as a ligand of Cu〓 as well as a"soft template" for the anisotropic growth of CuCl.

对溶剂在反应过程中所起的作用进行了深入研究，发现乙酰丙酮为还原剂，乙二醇即作配体又是CuCl晶体各向异性生长的&软模板&。

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。