生物乙醇制高级醇催化剂研究进展

Research progress in catalysts for producing higher alcohols from bioethanol

与乙醇相比,高级醇具有高的十六烷值、高能量密度、对发动机部件无腐蚀性、与水不混溶、稳定性好等直接作为燃料或燃料添加剂的优势,将发酵产生的生物乙醇转化为更有价值的高级醇受到了广泛关注。本工作综述了近年来世界各国有关生物乙醇制高级醇的研究进展,包括金属氧化物、羟基磷灰石(HAP)和负载型金属催化剂的研究开发现状,并比较了不同类型催化剂参与下的乙醇转化率和高级醇选择性,结合乙醇经缩合反应制备高级醇的机理进行了讨论,最后对当前生物乙醇制高级醇的挑战以及未来研究趋势进行了总结与展望,指出多功能催化剂的开发是未来研究重点,羟醛缩合是进一步提高生物乙醇制高级醇转化率与选择性的有效策略。

Compared with ethanol,higher alcohols have the advantages of high cetane number,high energy density,non corrosiveness to engine parts,immiscibility with water,good stability,and other advantages as fuel or fuel additive directly.The conversion of fermentation bioethanol into more valuable higher alcohols has attracted widespread attention.This paper reviewed the research progress of bioethanol to higher alcohols at home and abroad in recent years,including the research and development of metal oxides,hydroxyapatite(HAP)and supported metal catalysts.Finally,the current challenges and future research trends of bioethanol to higher alcohols are summarized and prospected,pointing out that the development of multifunctional catalysts is the focus of future research,and Aldol condensation is an effective strategy to further improve the conversion and selectivity of bioethanol to higher alcohols.