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化工学报  2015 

瞬间弹射蒸汽爆破增强离子液体对水稻秸秆的预处理效果

DOI: 10.11949/j.issn.0438-1157.20150151, PP. 302-307

Keywords: 离子液体,生物燃料,生物质,瞬间弹射蒸汽爆破,预处理

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Abstract:

选取具有不同组分分离效果的离子液体1-乙基-3-甲基咪唑醋酸盐([Emim]Ac)和1-乙基-3-甲基咪唑氯盐([Emim]Cl),并联用瞬间弹射蒸汽爆破(instantcatapultsteamexplosion,ICSE)对水稻秸秆进行预处理。离子液体导致了组分的重排,使纤维素更多地暴露于物料表面,同时减弱了木质素对纤维素紧密交联的程度。ICSE的使用提升了离子液体的预处理效果,酶解糖收率比单纯使用离子液体升高了14.83%([Emim]Ac)和13.14%([Emim]Cl),其中ICSE联用[Emim]Ac的糖收率最高达97.00%。采用扫描电镜(SEM)和热重分析仪(TGA)进行物料结构分析,证实了ICSE联用离子液体有助于破坏物料的致密结构,增加无定形区,从而提高酶解糖收率。

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