Catalytic conversion of biomass-derived 5-(hydroxymethyl)furfural (5-HMF) into carbon-increased hydrocarbons as drop-in energy-rich biofuels has received a great deal of concern for the development of sustainable chemical industry. Here, we demonstrate a one-pot conversion of 5-HMF into C₉-alkanes on one single catalyst, acidic–basic layered double oxides (Mg(Al)(Zr)O) supported CuCo alloy. The well-defined multifunctional catalytic sites with harmonious combination carry out cascade catalysis, affording C₉-alkanes (including 30% of more value-added branched-cycloalkanes) in 83% yield. The basic–acidic sites on Mg(Al)(Zr)O show high activity for aldol condensation of 5-HMF and acetone, producing 4-[5-(hydroxymethyl)-2-furanyl]-3-buten-2-one (HAc) in a yield of >99%. The engineered Co–Cu–Co linkages on supported CuCo perform efficient hydrodeoxygenation, affording C₉-alkanes in a selectivity of 96% from HAc. C₉-cycloalkanes are generated from the cyclization of the corresponding monohydric alcohol intermediates by the synergy of acidic and CuCo sites in the hydrodeoxygenation reaction.

中文翻译：

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Mg(Al)(Zr)O负载CuCo级联催化5-(羟甲基)糠醛生产喷气燃料环烷烃

将生物质衍生的5-(羟甲基)糠醛(5-HMF)催化转化为增碳碳氢化合物作为即用型富含能量的生物燃料，已受到可持续化学工业发展的广泛关注。在这里，我们演示了在一种单一催化剂上，即酸性-碱性层状双氧化物（Mg(Al)(Zr)O)负载的CuCo合金上，将5-HMF一锅转化为C _{9 -}烷烃。结构明确的多功能催化位点和谐组合，进行级联催化，得到C ₉烷烃（其中30%更具附加值的支链环烷烃），收率83%。 Mg(Al)(Zr)O 上的碱性-酸性位点对 5-HMF 和丙酮的醇醛缩合表现出高活性，产生 4-[5-(羟甲基)-2-呋喃基]-3-丁烯-2-酮 ( HAc)，产率 >99%。负载型 CuCo 上的工程化 Co-Cu-Co 连接可进行有效的加氢脱氧，从 HAc 中以 96% 的选择性提供 C ₉烷烃。 C ₉ -环烷烃是通过加氢脱氧反应中酸性位点和CuCo位点的协同作用，由相应的一元醇中间体环化生成的。