Ionic liquids for biofuel production: Opportunities and challenges
Ionic liquids for biofuel production: Opportunities and challenges
复制标题
用于生物燃料生产的离子液体：机遇与挑战
DOI：
10.1016/j.apenergy.2011.11.031
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发表时间：
2012-04-01
期刊：
影响因子：
11.2
通讯作者：
Guo, Chen
中科院分区：
文献类型：
--
作者：
Liu, Chun-Zhao;Wang, Feng;Guo, Chen
对环境污染、能源安全和未来石油供应的日益关注鼓励了大规模非石油基替代燃料的开发，如生物乙醇和生物柴油。由廉价且丰富的木质纤维素生物质来源制备的生物乙醇和通过植物油或动物脂肪的酯交换制备的生物柴油是非常理想的。然而，为了从木质纤维素生物质和植物油有效地生产生物乙醇和生物柴油，通常需要预处理和酯交换。这些方法通常需要使用对环境有害的化学品，例如碱、酸或有机溶剂。离子液体由于其显著的环境效益、工艺改进以及作为溶剂和催化剂的用途，在生物燃料生产中的应用引起了极大的关注。本文综述了离子液体在木质纤维素生物质预处理、溶解、水解等方面的应用及影响因素，以及离子液体的合成和节能回收利用。本文还讨论了利用离子液体作为油脂酯交换反应的助溶剂、催化剂或酶载体制备生物柴油的新工艺。(C)2011爱思唯尔有限公司保留所有权利。
Growing concerns related to environmental pollution, energy security, and future oil supplies have encouraged the development of large-scale non-petroleum-based alternative fuels, such as bioethanol and biodiesel. Bioethanol made from inexpensive and abundant sources of lignocellulosic biomass, and biodiesel produced through the transesterification of vegetable oils or animal fats are highly desirable. To efficiently produce bioethanol and biodiesel from lignocellulosic biomass and vegetable oil, however, pretreatment and transesterification are generally required. These processes usually necessitate the use of environmentally harmful chemicals such as alkali, acidic, or organic solvents. Ionic liquids (ILs), due to their significant environmental benefits, process improvements, and uses as both solvents and catalysts, have attracted significant attention for their use in biofuel production. This paper reviews the applications and main factors affecting the use of ILs in the pretreatment, dissolution, and hydrolysis of lignocellulosic biomass, as well as the synthesis and energy-efficient recycling of ILs. A new process for biodiesel production, in which ILs act as the co-solvents, catalysts, or enzyme supports in the oil transesterification process, is also discussed. (C) 2011 Elsevier Ltd. All rights reserved.