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Alternative TitleThe influence of ionic liquids pretreatment on production by fast pyrolysis from sugarcane bagasse
吴南南1,2; 蒋丽群1; 郑安庆1; 刘安琪1; 赵增立1; 何方1; 李海滨1
Source Publication可再生能源
Abstract采用1-烯丙基-3-甲基咪唑氯盐([AMIM]Cl)和1-丁基-3-甲基咪唑氯盐([BMIM]Cl)两种离子液体进行甘蔗渣预处理研究,以水洗预处理甘蔗渣作为对比试验。使用SEM,BET,XRD和TG-DTG对预处理前后样品进行表征,并利用Py-GC/MS装置对样品进行快速热解,重点考察了产物中左旋葡聚糖、呋喃类及乙酸的含量变化。结果表明,采用离子液体[AMIM]Cl在140℃下预处理甘蔗渣效果较好,此时甘蔗渣的结晶度由50.7%降低为36.5%,而比表面积则从2.0 m2/g增加至4.0 m2/g,同时甘蔗渣的热稳定性提高。在该条件下预处理能够脱除甘蔗渣中87.5%的碱金属和碱土金属,有效促进了甘蔗渣快速热解转化为左旋葡聚糖。热解产物中左旋葡聚糖含量从未处理的10.5%提高至38.0%,乙酸含量由5.7%降低为2.5%,而呋喃类产物的变化较小。
Other AbstractSugarcane bagasse was pretreated by ionic liquids(ILs) 1-allyl-3-methylimidazolium chloride([AMIM]Cl) and 1-butyl-3-methylimidazolium chloride([BMIM]Cl). Water washed sugarcane bagasse was used as a control. The samples were characterized by SEM, BET, XRD and TG-DTG, and then subjected to fast pyrolysis by using pyrolysis-gas chromatography/mass spectrometry(Py-GC/MS). The effects of ILs pretreatment on product distribution, especially levoglucosan, furans and acetic acid, by fast pyrolysis from sugarcane bagasse were studied. After pretreated by [AMIM]Cl at 140 ℃, the crystallinity of sugarcane bagasse was decreased from 50.7% to36.5%, the surface area was increased from 2.0 m2/g to 4.0 m2/g, and thermal stability was enhanced.Meanwhile, most of alkali and alkaline earth metals(87.5%) were removed from sugarcane bagass after IL pretreatment. The demineralization by ILs pretreatment effectively improved the yield of levoglucosan. Levoglucosan yield from IL pretreated sugarcane bagasse achieved 38.0% as compared with 10.5% for raw material after fast pyrolysis. The yield of acetic acid was decreased from 5.7% to2.5%, while the yield of furfural changed slightly.
Keyword甘蔗渣 离子液体 预处理 快速热解 sugarcane bagasse ionic liquids pretreatment fast pyrolysis
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Document Type期刊论文
Corresponding Author蒋丽群
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
吴南南,蒋丽群,郑安庆,等. 离子液体预处理对甘蔗渣快速热解产物的影响[J]. 可再生能源,2017,35(4):495-501.
APA 吴南南.,蒋丽群.,郑安庆.,刘安琪.,赵增立.,...&李海滨.(2017).离子液体预处理对甘蔗渣快速热解产物的影响.可再生能源,35(4),495-501.
MLA 吴南南,et al."离子液体预处理对甘蔗渣快速热解产物的影响".可再生能源 35.4(2017):495-501.
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