Being the only sustainable source of organic carbon, biomass is playing an ever-increasingly important role in our energy landscape. The conversion of renewable lignocellulosic biomass into liquid fuels is particularly attractive but extremely challenging due to the inertness and complexity of lignocellulose. Here we describe the direct hydrodeoxygenation of raw woods into liquid alkanes with mass yields up to 28.1 wt% over a multifunctional Pt/NbOPO4 catalyst in cyclohexane. The superior performance of this catalyst allows simultaneous conversion of cellulose, hemicellulose and, more significantly, lignin fractions in the wood sawdust into hexane, pentane and alkylcyclohexanes, respectively. Investigation on the molecular mechanism reveals that a synergistic effect between Pt, NbOx species and acidic sites promotes this highly efficient hydrodeoxygenation of bulk lignocellulose. No chemical pretreatment of the raw woody biomass or separation is required for this one-pot process, which opens a general and energy-efficient route for converting raw lignocellulose into valuable alkanes.

中文翻译：

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将原始木质生物质直接加氢脱氧成液态烷烃。

作为有机碳的唯一可持续来源，生物质在我们的能源格局中发挥着越来越重要的作用。可再生的木质纤维素生物质向液体燃料的转化特别有吸引力，但是由于木质纤维素的惰性和复杂性而极具挑战性。在这里，我们描述了在多功能的Pt / NbOPO4催化剂在环己烷中，原木直接加氢脱氧成液态烷烃的质量产率高达28.1 wt％。该催化剂的优异性能可将木屑中的纤维素，半纤维素以及更重要的木质素部分同时转化为己烷，戊烷和烷基环己烷。对分子机理的研究表明，Pt，NbOx种类和酸性部位促进了木质纤维素的高效加氢脱氧。此一锅法无需对原始木质生物质进行化学预处理或分离，这为将原始木质纤维素转化为有价值的烷烃开辟了一条通用且节能的途径。