| 付霓虹,袁玉国,王景芸.化学通报,2016,79(4):355-359. |
| 酸性离子液体降解纤维素制备5-羟甲基糠醛的研究 |
| Preparation of 5-hydroxymethyl furfural from cellulose degradation Catalyzed by acid ionic liquids |
| 投稿时间：2015-07-06 修订日期：2015-09-11 |
| DOI： |
| 中文关键词: 酸性离子液体 降解 纤维素 5-羟甲基糠醛 |
| 英文关键词:Acidic ionic liquids Degradation Cellulose 5-HMF |
| 基金项目:国家自然科学基金项目 |
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| 摘要点击次数: 2496 |
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| 中文摘要: |
| 以离子液体1-烯丙基-3-甲基咪唑氯盐为溶剂，以咪唑类酸功能离子液体[CnMIM]HSO4(n=2,4,6,8)和CrCl3?6H2O为复合催化剂，在微波辅助加热条件下降解纤维素制备5-羟甲基糠醛，考察了催化剂加入量、反应温度、催化剂种类、反应时间、加水量等反应条件对纤维素降解反应的影响。结果表明：以离子液体为溶剂，[C2mim]HSO4和氯化铬为催化剂，当[C2mim]HSO4的加入量为0.02 g，纤维素和CrCl3?6H2O催化剂的摩尔比为10:1，反应温度为160 ℃，反应时间为30 min，加水量为50 uL时，微晶纤维素转化率为100 %，总还原糖收率为87.22 %，5-羟甲基糠醛产率最高可达到50 %。 |
| 英文摘要: |
| In this study, imidazolium based acid ionic liquids and CrCl3?6H2O were used to catalyze the hydrolysis of cellulose in ionic liquid 1-allyl-3-methylimidazolium chloride via microwave-assisted irradiation to prepare 5-hydroxymethyl furfural. The effects of the type and amount of catalysts, reaction temperature, reaction time, amount of water and on the degradation of cellulose were studied in details. The results indicated that [C2mim]HSO4 and CrCl3?6H2O are efficient catalysts for the preparation of 5-HMF. The cellulose can be completely converted with the highest TRS yield of 87.22 % and 5-HMF yield of 50 % under the condition of nMCC:nCr=10:1, the mass of [C2mim]HSO4 =0.02 g, and reaction temperature 160 ℃ under microwave-assisted heating for 30 min. |
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