Upgrading of sisal-derived bio-oil employing platinum-supported hierarchical HZSM-5 derived from coal fly ash silica

IF 5.6 2区工程技术 Q2 ENERGY & FUELS

Journal of The Energy Institute Pub Date : 2025-06-06 DOI:10.1016/j.joei.2025.102171

Erlan A. Pacheco , Sirlene B. Lima , Guilherme S. Barbosa , George M. de Lima , Edinilson R. Camelo , Cesário F. das Virgens , Carlos Augusto de M. Pires , Maria do Carmo Rangel

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引用次数: 0

Abstract

This study evaluates sisal residue-derived bio-oil hydrodeoxygenation (HDO) using platinum-impregnated, hierarchically structured HZSM-5 zeolites synthesized from coal fly ash silica. The silica extraction achieved a 35 wt% yield with 97 % purity. Zeolites were hierarchized via desilication (0.05–0.20 M NaOH) and loaded with 1 wt% Pt. The HZ05Pt catalyst (moderate desilication) exhibited superior performance, increasing hydrocarbon yield to 68.8 %, with enhanced selectivity for C₉–C₁₂ (15.89 %) and C₁₃–C₂₀ (30.86 %) fractions, and reducing oxygen content to 14.26 wt% (O/C = 0.15). In contrast, excessive desilication (HZ20Pt) led to reduced activity and higher oxygen retention (25.03 wt%), indicating structural degradation. Nitrogen-containing compounds remained largely unconverted, suggesting limited hydrodenitrogenation. The results highlight the synergistic effect of moderate hierarchization and platinum incorporation in producing stable, energy-dense biofuels. Additionally, using coal fly ash as a silica source reinforces the process's sustainability and circular economy potential.

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利用煤粉煤灰硅基衍生的铂负载分级HZSM-5对剑麻生物油进行升级改造

本研究使用铂浸渍、分层结构的HZSM-5沸石对剑麻渣衍生生物油加氢脱氧（HDO）进行了评价。二氧化硅萃取得到35 wt%的收率和97%的纯度。通过脱硅（0.05-0.20 M NaOH）将沸石分层，并负载1 wt% Pt。HZ05Pt催化剂（适度脱硅）表现出优异的性能，将烃收率提高到68.8%，对C9-C12（15.89%）和C13-C20（30.86%）馏分的选择性增强，氧含量降低到14.26 wt% （O/C = 0.15）。相比之下，过度脱硅（HZ20Pt）导致活性降低和高氧保留（25.03 wt%），表明结构降解。含氮化合物大部分未转化，表明氢脱氮作用有限。研究结果强调了适度分级和铂掺入在生产稳定、高能量密度生物燃料中的协同效应。此外，使用粉煤灰作为二氧化硅源增强了该工艺的可持续性和循环经济潜力。

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来源期刊

Journal of The Energy Institute 工程技术-能源与燃料

CiteScore

10.60

自引率

5.30%

发文量

166

审稿时长

16 days

期刊介绍： The Journal of the Energy Institute provides peer reviewed coverage of original high quality research on energy, engineering and technology.The coverage is broad and the main areas of interest include: Combustion engineering and associated technologies; process heating; power generation; engines and propulsion; emissions and environmental pollution control; clean coal technologies; carbon abatement technologies Emissions and environmental pollution control; safety and hazards; Clean coal technologies; carbon abatement technologies, including carbon capture and storage, CCS; Petroleum engineering and fuel quality, including storage and transport Alternative energy sources; biomass utilisation and biomass conversion technologies; energy from waste, incineration and recycling Energy conversion, energy recovery and energy efficiency; space heating, fuel cells, heat pumps and cooling systems Energy storage The journal''s coverage reflects changes in energy technology that result from the transition to more efficient energy production and end use together with reduced carbon emission.