Microwave irradiation promoting acid hydrolysis of straw pole into reducing sugar in ionic liquid ［Bmim］Cl

杨明妮

doi:10.3969/j.issn.0438-1157.2011.z2.015

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Microwave irradiation promoting acid hydrolysis of straw pole into reducing sugar in ionic liquid ［Bmim］Cl

更新时间：2025-12-10

- Microwave irradiation promoting acid hydrolysis of straw pole into reducing sugar in ionic liquid ［Bmim］Cl
- CIESC Journal Issue S2, Pages: 90-96(2011)
- 作者机构：
  
  云南师范大学化学化工学院
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2011.z2.015
  CLC：
- Online First：20 December 2011，
  
  Published：20 December 2011
- 稿件说明：
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杨明妮. Microwave irradiation promoting acid hydrolysis of straw pole into reducing sugar in ionic liquid ［Bmim］Cl[J]. CIESC Journal, 2011, (S2): 90-96.
DOI：

杨明妮. Microwave irradiation promoting acid hydrolysis of straw pole into reducing sugar in ionic liquid ［Bmim］Cl[J]. CIESC Journal, 2011, (S2): 90-96. DOI： 10.3969/j.issn.0438-1157.2011.z2.015.

摘要

以［Bmim］Cl离子液体为介质，研究了微波辐射加热对硫酸催化稻草秸秆水解的促进作用，并对水解产物中的还原糖进行了测定。着重考察了［Bmim］Cl离子液体用量、硫酸浓度、反应温度和反应时间等因素对还原糖收率的影响，并采用正交试验法对微波辐射下稻草酸水解条件进行了优化。结果表明，在［Bmim］Cl离子液体介质中，用微波辐射加热促进稻草酸水解制备还原糖的最佳条件是：［Bmim］Cl用量10.0ml，硫酸浓度10.0%，微波加热温度85℃，反应时间60 min。在此条件下还原糖的收率可达到23. 22%，而常规酸水解得到的还原糖收率仅为18.74%。通过显微镜和红外光谱对水解残余物与稻草原料进行分析后发现：水解后的稻草残渣变细、变薄，并且与稻草原料的结构基本一致，保留了较好的纤维素特征。

Abstract

With ［Bmim］Cl as reactive medium

the enhancement of sulfuric acid hydrolysis process of rice straw was studied under microwave irradiation

and the reducing sugar was determined. The influences of ionic liquid volume

sulfuric acid concentration

microwave irradiation time

reaction temperature on yield of reducing sugar with acid hydrolysis of straw pole were mainly tested. Besides

by means of orthogonal experiment

the conditions for sulfuric acid hydrolysis of rice straw under microwaves irradiation were optimized. The results indicate that the best condition of acid hydrolysis of straw pole into reducing sugar in microwave irradiating is ［Bmim］Cl 10.0 ml

H2SO4 10.0%

reactive temperature 85℃

reactive time 60 min

and the yield ratio of reducing sugar could reach 23.22% under the best condition

but the yield ratio of reducing sugar of the conventional acid hydrolysis is only 18.74%. Moreover

the hydrolysis residue and rice materials were characterized using the microscope and infrared spectra

the results show that the hydrolysis residue is thin and has the same structure as straw raw materials and both keep a good structure of cellulose.

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