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| 以无水三氯化铝为催化剂，用傅-克酰基化反应合成了××××××，收率达到70%。利用傅立叶变换红外光谱、核磁共振光谱、凝胶渗透色谱和热分析等手段，对其结构和性质进行了表征。根据热重分析，其失重5 % 时对应的温度为520℃，热稳定性较高，应用前景广阔。 |
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liyouran85
金虫 (小有名气)
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mengerhui(金币+4,VIP+0):不错
mengerhui(金币+4,VIP+0):不错
| Friedel-Crafts acylation reaction was adopted to sythesize XXXXXX, using Anhydrous Aluminium Chloride as catalyst and the yield was 70%. Fourier Transform Infrared Spectroscopy, nuclear magntic resonance, gel permeation chromatography and thermal analysis, etc were used to characterize its structure and characteristic. According to thermogravimetric analysis, it had a weight loss of 5% at 520℃, which showed its high thermal stability and wide application prospect. |
2楼2008-03-19 19:10:50
knightstar
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mengerhui(金币+3,VIP+0):可以
mengerhui(金币+3,VIP+0):可以
| With anhydrous aluminum chloride as a catalyst and Friedel-Crafts acylation ×××××× was synthesized ,including a yield of 70%.By using Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, gel permeation chromatography and thermal analysis, and so on ,we characterized its structure andproperties. According to TGA, we knew that 5% weight loss corresponding to the temperature of 520 ℃,and it has higher thermal stability and broad prospects for application. |
3楼2008-03-19 19:15:43