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筆墨輕點(diǎn)新蟲 (初入文壇)
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[求助]
求翻譯中文，有機(jī) 化學(xué)類
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2.3. Characterization The modified clay support and supported Ni0-nanoparticles were characterized by using PXRD, surface area analyzer and transmission electron microscopy (TEM) studies [32]. The powder XRD was recorded in Rigaku Ultima IV machine with Cu Kα radiation (λ=1.5409 Å  .The textural properties measured by using Autosorb-1 (Quantachome,USA) and transmission electron microscopy (TEM) image were recorded on a JEOL JEM-2011 electron microscope.2.4. Synthesis of Hantzsch polyhydroquinoline derivatives To a mixture of aromatic aldehyde (1 mmol), dimedone (1 mmol), ethylacetoacetate (1 mmol), and ammonium acetate (1.5 mmol) in a10 ml round bottom flask, modified Mont. supported Ni0-nanoparticle catalyst (25 mg) was added [Scheme 1]. The mixture was homogenized and stirred at room temperature for 20–25 min, the progress of the re-action was monitored by thin layered chromatography. After comple-tion, 10 ml dichloromethane was added to the reaction mixture; thecatalyst was removed by filtration and washed with dichloromethane and acetone. Then, the liquid portion was extracted with ethyl acetate and water to remove any unreacted ammonium acetate; the organic layer was dried over sodium sulfate and concentrated in vacuum to afford the crude products. The pure product was obtained by recrystal-lization from ethanol. |
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至尊木蟲 (知名作家)
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- 翻譯EPI: 1690
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【答案】應(yīng)助回帖
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筆墨輕點(diǎn): 金幣+20, ★★★★★最佳答案 2014-09-25 08:23:18
筆墨輕點(diǎn): 金幣+20, ★★★★★最佳答案 2014-09-25 08:23:18
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2.3.表征 用功率X射線衍射(PXRD)、表面積測定儀和透射電子顯微鏡（TEM）對改性粘土支撐和支持的NiO納米顆粒進(jìn)行表征【32】。用帶有銅嘉輻射(λ=1.5409 Å）的Rigaku Ultima IV記錄功率X射線衍射(PXRD)結(jié)果。使用AUTOSORB-1（Quantachome，美國）測定紋理（結(jié)構(gòu)）特征。用JEOL JEM-2011電子顯微鏡記錄透射電子顯微鏡（TEM）的影像. 2.4.Hantzsch 多聚羥基喹啉衍生物的合成 向含有混合物芳香醛（1毫摩爾），雙甲酮（1毫摩爾），乙酰乙酸乙酯（1毫摩爾）和乙酸銨（1.5毫摩爾）的10毫升混合圓底瓶中加入改性Montmorillonite支持的Nio納米顆粒催化劑（25毫克）[流程圖1]。將混合物均化并在室溫下攪拌20-25分鐘后，用薄層層析監(jiān)測反應(yīng)進(jìn)程。完成后，向反應(yīng)混合液加入10毫升二氯甲烷; 用過濾、二氯甲烷和丙酮洗滌方法除去催化劑。然后，用乙酸乙酯和水萃取液體部分，以除去任何未反應(yīng)的乙酸銨。將有機(jī)層用硫酸鈉干燥并真空濃縮，得到粗產(chǎn)品。用乙醇重結(jié)晶得到純品。 |
3樓2014-09-25 02:44:32
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2樓2014-09-24 21:44:02
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