Bio-oil, produced by the destructive distillation of cheap and renewable lignocellulosic biomass, contains high energy density oligomers in the water-insoluble fraction that can be utilized for diesel and valuable fine chemicals productions. Here, we show an efficient hydrodeoxygenation catalyst that combines highly dispersed palladium and ultrafine molybdenum phosphate nanoparticles on silica. Using phenol as a model substrate this catalyst is 100% effective and 97.5% selective for hydrodeoxygenation to cyclohexane under mild conditions in a batch reaction; this catalyst also demonstrates regeneration ability in long-term continuous flow tests. Detailed investigations into the nature of the catalyst show that it combines hydrogenation activity of Pd and high density of both Brønsted and Lewis acid sites; we believe these are key features for efficient catalytic hydrodeoxygenation behavior. Using a wood and bark-derived feedstock, this catalyst performs hydrodeoxygenation of lignin, cellulose, and hemicellulose-derived oligomers into liquid alkanes with high efficiency and yield.Bio-oil is a potential major source of renewable fuels and chemicals. Here, the authors report a palladium-molybdenum mixed catalyst for the selective hydrodeoxygenation of water-insoluble bio-oil to mixtures of alkanes with high carbon yield.

中文翻译：

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使用高度分散的Pd-Mo催化剂将水不溶性生物油加氢脱氧为烷烃。

通过廉价和可再生的木质纤维素生物质的破坏性蒸馏生产的生物油，在水不溶性馏分中包含高能量密度的低聚物，可用于柴油和有价值的精细化学品的生产。在这里，我们展示了一种高效的加氢脱氧催化剂，该催化剂在二氧化硅上结合了高度分散的钯和超细磷酸钼纳米颗粒。以苯酚为模型底物，该催化剂在温和条件下在间歇反应中对于加氢脱氧成环己烷具有100％的效率和97.5％的选择性。该催化剂在长期连续流动试验中也显示出再生能力。对催化剂性质的详细研究表明，它结合了Pd的氢化活性以及Brønsted和Lewis酸位的高密度。我们相信这些是有效催化加氢脱氧行为的关键特征。该催化剂使用木材和树皮衍生的原料，将木质素，纤维素和半纤维素衍生的低聚物加氢脱氧成液态烷烃，具有高效率和高收率。生物油是可再生燃料和化学品的潜在主要来源。在这里，作者报道了一种钯钼混合催化剂，用于将不溶于水的生物油选择性加氢脱氧成具有高碳收率的烷烃混合物。