有機錫化合物 的英文怎麼說
中文拼音 [yǒujīxíhuàgěwù]
有機錫化合物
英文
organic tin compound-
They were used as efficient lewis acid catalysts for esterification reactions of carboxylic acids with alcohols to afford corresponding saturated esters with 87 % ~ 98 % yields and unsaturated and tertiary ones with 90 % ~ 94 % and 54 % ~ 68 % yields, respectively
結果表明，該有機錫化合物是合成酯的優良催化劑，產品收率高，飽和一元羧酸酯的收率為87 % ~ 98 % ，對不飽和羧酸酯和空間位阻大的叔醇酯也能得到較滿意的收率，分別為90 % ~ 94 %和54 % ~ 68 % 。Application of microwave - assisted extraction technique in speciation analysis of organotin, organoarsenic and organomercury compounds
微波輔助萃取技術在有機錫砷汞化合物形態分析中的應用The catalysts could be easily filtrated from the reaction mixture and reused
有機錫化合物作為催化劑用量少，並能回收再利用。Water quality - determination of selected organotin compounds - gas chromatographic method
水質.選定的有機錫化合物的測定.氣相色譜法A more detailed review on application of gas chromatograph and its coupled techniques in the environment organo tin compounds analysis was presented in this paper
該文就氣相色譜及其聯用技術在環境中有機錫化合物的測定進行綜述。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