In this work, one‐pot synthesis of biofuel γ‐valerolactone (GVL) and valeric acid (VA) from biomass‐derived levulinic acid (LA) are highly selectively produced on a series of robust Pd‐nanoparticle catalysts. These fine Pd nanoparticles are controllably synthesized and confined in the mesoporous channel of MCM‐41‐derived supports via a green solvent CO₂‐assited method. A combination analysis tools are used to study physical properties and elucidate the relationship between the structure and performances. The catalytic results display 5 wt% Pd/AlMCM‐41 exhibits the best performances of 88.5% GVL yield at the perfect conversion of LA. Moreover, without the isolation of GVL intermediate, it can also efficiently catalyze the one‐pot conversion of LA to VA with 45.1% yield. Besides, Pd‐nanoparticle catalysts maintain stable structure and good catalytic performances over several runs.

中文翻译：

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一锅双功能金属催化剂中γ-戊内酯和戊酸的选择性生产

在这项工作中，在一系列坚固的钯纳米颗粒催化剂上高度选择性地从生物质衍生的乙酰丙酸（LA）一次合成生物燃料γ-戊内酯（GVL）和戊酸（VA）。这些精细的Pd纳米颗粒可控制地合成，并通过绿色溶剂CO ₂限制在MCM-41衍生的载体的介孔通道中辅助方法。组合分析工具用于研究物理性能并阐明结构与性能之间的关系。催化结果表明，在LA的完美转化率下，5 wt％的Pd / AlMCM-41表现出88.5％的GVL最佳性能。此外，无需分离GVL中间体，它还可以有效催化LA到VA的一锅转化，收率为45.1％。此外，钯纳米颗粒催化剂在数次运行中仍保持稳定的结构和良好的催化性能。