The hydrogenation of furfural, 5-hydroxymethylfurfural and 5-methylfurfural over platinum and palladium catalysts based on porous aromatic frameworks

IF 4.7 2区化学 Q2 CHEMISTRY, PHYSICAL

Applied Catalysis A: General Pub Date : 2024-11-13 DOI:10.1016/j.apcata.2024.120025

Andrei Dubiniak , Leonid Kulikov , Sergey Egazar`yants , Anton Maximov , Eduard Karakhanov

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Abstract

Platinum and palladium catalysts supported on two types of porous aromatic frameworks, PAF-30 and PAF-30-NH₂ (modified with amino groups), were examined in furfural hydrogenation. The influence of temperature, reaction time and solvent on selectivity and activity of the catalysts was investigated. Using isopropanol as solvent and conducting experiments at 40 ℃ led to sufficient decrease of side products yields. According to TEM Pt-PAF-30 and Pd-PAF-30-NH₂ catalysts are characterized with uniform particles distribution on support. Elemental analysis shows a difference in palladium content between Pd-PAF-30 and Pd-PAF-30-NH₂: 4.6 % and 6.8 % respectively. Whereas platinum catalysts have both 5.4 % of metal. Catalyst Pt-PAF-30 was highly selective to tetrahydrofurfuryl alcohol (83 % yield), whereas the catalyst Pd-PAF-30-NH₂ exhibited unusually high selectivity towards tetrahydrofurfural (77 % yield). All studied catalysts were also tested in the hydrogenation of 5-hydroxymethylfurfural and 5-methylfurfural, in these experiments up to 20 % yield of 1-hydroxy-4-hexen-2-one was observed.

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基于多孔芳香框架的铂和钯催化剂对糠醛、5-羟甲基糠醛和 5-甲基糠醛的氢化反应

研究了铂和钯催化剂在糠醛加氢过程中对两种多孔芳香框架 PAF-30 和 PAF-30-NH2（用氨基修饰）的支撑作用。研究了温度、反应时间和溶剂对催化剂选择性和活性的影响。使用异丙醇作为溶剂并在 40 ℃ 下进行实验可充分降低副产物的产量。根据 TEM 分析，Pt-PAF-30 和 Pd-PAF-30-NH2 催化剂的特点是颗粒在载体上分布均匀。元素分析表明，Pd-PAF-30 和 Pd-PAF-30-NH2 的钯含量不同，分别为 4.6 % 和 6.8 %。而铂催化剂的金属含量均为 5.4%。催化剂 Pt-PAF-30 对四氢呋喃乙醇具有高选择性（产率 83%），而催化剂 Pd-PAF-30-NH2 则对四氢呋喃糠醛具有异常高的选择性（产率 77%）。所有研究的催化剂还在 5-羟甲基糠醛和 5-甲基糠醛的氢化过程中进行了测试，在这些实验中观察到 1-羟基-4-己烯-2-酮的产率高达 20%。

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来源期刊

Applied Catalysis A: General 化学-环境科学

CiteScore

9.00

自引率

5.50%

发文量

415

审稿时长

24 days

期刊介绍： Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications. Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.