生物油中有机酸的去除及利用进展

Removal and utilization of organic acids in bio-oil

生物质快速热裂解制取的生物油是燃料和化学品的重要来源。本文介绍了生物油中有机酸的存在形式、形成机理以及生物油中有机酸的去除方法和利用研究进展,分析了各种方法的优缺点以及目前面临的主要问题。总体来说,开发高效稳定的催化剂应用于催化酯化是去除生物油中有机酸以期获得高品质燃油的重点,而将有机酸在生物油中直接转化为高附加值化工品是较为理想的有机酸利用方式。

Bio-oil,produced by fast pyrolysis of biomass,is an important source of fuel and chemicals.The organic acids in bio-oil are not only the main materials resulting in corrosion in the process of its fuel usage,but also a class of chemicals that can be utilized.The existence form,formation mechanism and the removal and usage of the organic acids in bio-oil are reviewed,and the advantages and disadvantages of different methods,as well as the present status of technologies are analyzed.Overall,it is proposed that development of efficient and stable catalysts for catalytic esterification should be the research focus of removal of organic acids in bio-oil,while direct conversion of organic acids in bio-oil to high value-added chemicals is a preferable way for their utilization.