碳支撑铂铋双金属催化剂在 5-羟甲基糠醛有氧氧化为 2,5-呋喃二甲酸过程中的特性和性能测试

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy Pub Date : 2024-11-27 DOI:10.1016/j.biombioe.2024.107505

P. Díaz-Maizkurrena , J. Requies , A. Iriondo , M. Macías-Villasevil

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引用次数: 0

摘要

对石油基化学品可持续替代品的需求日益增长，推动了利用木质纤维素生物质（LCB）等可再生原料生产高价值产品的研究。在 LCB 衍生的平台分子中，5-羟甲基糠醛（HMF）已成为 2,5-呋喃二甲酸（FDCA）等生物基单体的关键构建基块。本研究报告了在活性碳 (C) 上成功合成各种铂铋催化剂的情况，并研究了它们在 HMF 转化为 FDCA 过程中的作用。在批次反应器中，使用水性反应介质中的 HMF、1 M Na2CO3 提供碱度以及 10 bar 的氧气，对铂铋/C 催化剂的催化性能进行了评估。这些结果表明，催化剂特性与其催化活性之间存在密切联系。在制备的催化剂中，9Pt-3Bi/C 催化剂的效率最高，其 FDCA 收率达到 99.7%。进一步研究发现，9Pt-3Bi/C 催化剂即使在缩短反应时间、降低温度和减少催化剂载量的情况下也能保持优异的性能，这表明它具有实际应用的潜力。在所有反应中观察到，在测试的反应条件下，HMF 降解为其他化合物的副反应显著存在。这凸显了将 HMF 定量转化为 FDCA 所面临的挑战，同时提高了催化剂性能和反应条件优化的重要性，以尽量减少副产品的生成。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Characterization and performance of carbon supported platinum-bismuth bimetallic catalysts tested in 5-hydroxymethylfurfural aerobic oxidation to 2,5-furandicarboxylic acid

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Characterization and performance of carbon supported platinum-bismuth bimetallic catalysts tested in 5-hydroxymethylfurfural aerobic oxidation to 2,5-furandicarboxylic acid

The increasing demand for sustainable alternatives to petroleum-based chemicals has driven research towards the utilization of renewable feedstock, such as lignocellulosic biomass (LCB), to produce high-value products. Among LCB-derived platform molecules, 5-hydroxymethylfurfural (HMF) has become a key building block for bio-based monomers such as 2,5-furandicarboxylic acid (FDCA), among many others. This study reports the successful synthesis of various Pt-Bi catalysts supported on activated carbon (C) and investigates their role in the HMF conversion to FDCA.

The catalytic performance of the Pt-Bi/C catalysts was evaluated in batch reactors, using HMF in an aqueous reaction medium, with 1 M of Na₂CO₃ to provide alkalinity, and under 10 bar of O₂. These results demonstrated a strong correlation between catalyst properties and their catalytic activity. Among the prepared catalysts, the 9Pt-3Bi/C catalyst was the most efficient one, achieving a yield to FDCA of 99.7 %. Further investigations revealed that the 9Pt-3Bi/C catalyst maintained its excellent performance even under reduced reaction times, lower temperatures, and reduced catalyst loadings, demonstrating its potential for practical applications.

Across all reactions, it was observed that, under the tested reactions conditions, the existence of side reactions involving HMF degradation to other compounds was significant. This underscores the challenge of achieving quantitative HMF conversion to FDCA, enhancing the importance of catalyst properties and reaction conditions optimization to minimize by-product formation.

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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.