| 固体超强酸SO42-/Fe2O3催化绿色合成醋酸纤维素 |
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| 引用本文： | 阎立峰,李婉,刘绍阳,齐中会,庞浩.固体超强酸SO42-/Fe2O3催化绿色合成醋酸纤维素[J].中国科学技术大学学报,2006,36(4):422-425. |
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| 作者姓名： | 阎立峰 李婉 刘绍阳 齐中会 庞浩 |
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| 作者单位： | 1. 中国科学技术大学化学物理系与生物质洁净能源实验室,合肥微尺度物质科学国家实验室(筹),安徽,合肥,230026
2. 中国科学院纤维素化学重点实验室,广州,510650 |
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| 基金项目： | 中国科学院纤维素化学重点实验室基金;安徽省自然科学基金 |
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| 摘 要： | 合成了固体超强酸SO4^2-/Fe2O3,并将其用作浓硫酸的绿色替代催化剂进行纤维素的醋酸酯化反应.该催化剂在DMAc/LiCl体系中可对纤维素进行酰化反应.为避免有机溶剂的污染,反应在无溶剂的球磨反应器中进行.通过FT-IR、AFM和H^1-NMR研究发现,在无溶剂和固体超强酸催化下纤维素可以转化为醋酸纤维素,并且酯化程度随球磨时间增加而增加.
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| 关 键 词： | 醋酸纤维素 固体超强酸 无溶剂 酯化 |
| 文章编号： | 0253-2778(2006)04-0422-04 |
| 收稿时间： | 10 10 2005 12:00AM |
| 修稿时间： | 12 25 2005 12:00AM |
Green synthesis of cellulose acetate by solid superacid SO42-/Fe2O3 catalysis |
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| YAN Li-feng,LI Wan,LIU Shao-yang,QI Zhong-hui,PANG Hao.Green synthesis of cellulose acetate by solid superacid SO42-/Fe2O3 catalysis[J].Journal of University of Science and Technology of China,2006,36(4):422-425. |
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| Authors: | YAN Li-feng LI Wan LIU Shao-yang QI Zhong-hui PANG Hao |
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| Institution: | 1. Department of Chemical Physics and Biomass Clean Energy Laboratory, He f ei National Laboratory for Physical sciences at the Microscale, USTC, Hefei 230026,China ; 2. CAS Key Laboratory of Cellulose and Lignocellulosics Chemistry, Guangzhou 510650, China |
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| Abstract: | Solid superacid SO~(2-)_4/Fe_(2)O_(3) was prepared and used as a green catalyst to replace traditional vitriol in synthesis of cellulose acetate(CA).The acylation reactions of cellulose were carried out both in DMAc/LiCl solution and in solvent-free conditions.FT-IR,AFM and (H~(1)-NMR) measurements reveal that in the presence of the solid superacid catalyst there formed cellulose acetate,and that the acylation degree of cellulose in solvent-free conditions depends on the reaction time.This method provides a new environmental benign route to synthesize cellulose acetate. |
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| Keywords: | cellulose acetate(CA) solid superacid solvent-free esterification |
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