銠催化劑 的英文怎麼說
中文拼音 [lǎocuīhuàjì]
銠催化劑
英文
rhodium catalyst-
Ethanol synthesis ; rh - mn catalyst ; active site ; si - oh
乙醇合成銠錳催化劑活性位硅羥基Catalyst for ethanol synthesis. the results show that the reactive metals rh and mn are fixed on the catalyst surface by the interaction with si - oh, which can enhance the stability of highly dispersed metals. rh and mn interact with each other to form the acitve site with high ethanol synthesis activity. the surface si - oh was found to be of significance on the preparation of catalyst with high catalytic activity
的性質，結果表明，活性金屬銠及錳經浸漬法擔載于載體上后即與表面羥基作用使金屬固定在氧化硅的表面上，保證了高度分散活性金屬的穩定性高度分散中的銠錳相互結合，構成了乙醇合成中的高活性位研究發現表面硅羥基在催化劑制備過程中起著重要作用。Studies on the heterogeneous asymmetric hydrogenation of ethyl pyruvate and acetophenone catalyzed by supported rhodium
負載型銠催化劑催化潛手性羰基化合物的多相不對稱氫化反應的研究Abstract : polyphenylacetylenes were synthesized by rn ( nbd ) cl 2 and wcl6 / ph4sn catalyst systems in n2 at room temperature. polymers with high yield and high molecular weight were obtained. their structures were characterized by uv, ir, nmr and gpc, respectively. the fluorescence of the polymer solution with different concentration was investigated using variable excitation wavelength from uv to visible region. the relation between fluorescence and polymer structure was studied. the results showed that the molecular chain structure has great influence on fluorescence of the polymers. the emitting peak wavelength of fluorescence for the polymer of high stereoregularity is independent of solution concentration and excitation wavelength. the emitting peak wavelength of fluorescence for the polymer with disordered molecular chain arrangement varies with changing the solution concentration and excitation wavelength, and different emission sites in molecular chains and low emitting yield are shown. the measurement and analysis of fluorescence spectroscopy of polyphenylacetylenes may provide some useful information to judge the molecular chain arrangement in some conjugated polymers
文摘:使用有機金屬銠、金屬鎢/四苯基錫催化劑體系聚合苯乙炔，分別獲得了高產率和高分子量的聚苯乙炔.使用uv ， ir ， nmr ， gpc等分別對聚合物結構進行了表徵.採用不同波長的激發光對聚合物熒光性能進行研究，詳細分析了聚合物結構與熒光性能之間的關系.研究結果發現，不同聚合物結構對聚合物熒光性能產生很大影響，規整性高的聚合物，將有較高的發光量子效率；聚合物規整性差，將可能導致多個熒光發光結構點，其熒光強度降低.聚合物熒光光譜研究將對某些共軛聚合物結構的規整性分析提供一些有用的信息分享友人