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学科主题: 物理化学
题名: Conversion of cellulose and lignocellulose in inoic liquids
作者: Li CZ(李昌志) ;  Zhang ZH(张泽会) ;  Zhao ZB(赵宗保)
会议名称: The 4th international conference on Green and sustainable chemistry & The 2nd Asian-Oceanian conference on green and sustainable chemistry
会议日期: 2009-8-20
出版日期: 2009-08-20
会议地点: 中国
通讯作者: 赵宗保
部门归属: 十八室
主办者: 中科院过程工程研究所, 等
摘要: Conversion of cellulose and lignocellulose in ionic liquids Changzhi Li, Zehui Zhang, Zongbao (Kent) Zhao Dalian Institute of Chemical Physics, CAS, Dalian 116023, PR China Monomeric carbohydrates are the most important materials that can be directly used as feedstock for production of biofuel and bio-based chemicals. However, carbohydrates are more widely presented as polymers such as starch, cellulose, hemicellulose and chitin. So far, hydrolysis of starch has been well-established. Because cellulose and hemicellulose exist routinely and concurrently with lignin as found in lignocellulosic biomass, and cellulose forms a highly crystalline structure due to the presence of extensive intra- and inter-molecular hydrogen bonds and van der Waals interactions, it remains a major challenging for cost-effective hydrolysis of cellulosic materials. Many efforts have been devoted to depolymerization of cellulose and subsequent transformations. These included acidic hydrolysis, enzymatic hydrolysis, hydrolysis in supercritical water and oxidative or reductive depolymerization. However, most previous works performed reactions under heterogeneous conditions, i.e., solid cellulosic materials in aqueous media, which made the reaction inefficient. We recently demonstrated that hydrolysis of cellulose and cellulosic materials could be realized much more efficiently in ionic liquids under mild conditions, yet no pretreatment process was necessary. In addition, chemical transformation of lignocellulosic materials, such as corn stover and wood chips, in ionic liquids produced furan derivatives 5-hydroxyfurfural and furfural in high yields. As separation of ionic liquids from monomeric carbohydrates or furan derivatives is readily achievable, conversion of biomass in ionic liquids should be a powerful technology to extract biofuels and chemicals form renewable resources.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113954
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Li CZ,Zhang ZH,Zhao ZB. Conversion of cellulose and lignocellulose in inoic liquids[C]. 见:The 4th international conference on Green and sustainable chemistry & The 2nd Asian-Oceanian conference on green and sustainable chemistry. 中国. 2009-8-20.
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