Hydrodeoxygenation (HDO) is a promising technology to upgrade fast pyrolysis bio‐oils but it requires active and selective catalysts. Here we explore the synergy between the metal and acid sites in the HDO of anisole, a model pyrolysis bio‐oil compound, over mono‐ and bi‐functional Pt/(Al)‐SBA‐15 catalysts. Ring hydrogenation of anisole to methoxycyclohexane occurs over metal sites and is structure sensitive; it is favored over small (4 nm) Pt nanoparticles, which confer a turnover frequency (TOF) of approximately 2000 h⁻¹ and a methoxycyclohexane selectivity of approximately 90 % at 200 °C and 20 bar H₂; in contrast, the formation of benzene and the desired cyclohexane product appears to be structure insensitive. The introduction of acidity to the SBA‐15 support promotes the demethyoxylation of the methoxycyclohexane intermediate, which increases the selectivity to cyclohexane from 15 to 92 % and the cyclohexane productivity by two orders of magnitude (from 15 to 6500 mmol g_Pt⁻¹ h⁻¹). Optimization of the metal–acid synergy confers an 865‐fold increase in the cyclohexane production per gram of Pt and a 28‐fold reduction in precious metal loading. These findings demonstrate that tuning the metal–acid synergy provides a strategy to direct complex catalytic reaction networks and minimize precious metal use in the production of bio‐fuels.

中文翻译：

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金属酸协同作用：苯甲醚在Pt / Al-SBA-15上的加氢脱氧。

加氢脱氧（HDO）是一种可升级快速热解生物油的有前途的技术，但它需要活性和选择性的催化剂。在这里，我们探讨了单功能和双功能Pt /（Al）-SBA-15催化剂在模型热解生物油化合物苯甲醚的HDO中的金属和酸性位点之间的协同作用。苯甲醚在金属位点发生环氢化成甲氧基环己烷，并且对结构敏感。它优于小（4 nm）的Pt纳米颗粒，在200°C和20 bar H _{2的条件下}，它具有约2000 h ^-1的周转频率（TOF）和约90％的甲氧基环己烷选择性; 相反，苯和所需环己烷产物的形成似乎对结构不敏感。引入酸度到SBA-15载体的促进methoxycyclohexane中间体，其由两个数量级（从15到6500毫摩尔克增加的选择性为15〜92％环己烷和环己烷生产率的demethyoxylation_铂^-1  ħ ^{- 1}）。金属-酸协同作用的优化使每克Pt的环己烷产量增加865倍，贵金属负载量减少28倍。这些发现表明，调节金属与酸的协同作用提供了一种策略，可指导复杂的催化反应网络并最大程度地减少生物燃料生产中贵金属的使用。