Catalytic valorization of glycerol to sustainable aviation fuels: Hydrodeoxygenation, hydroisomerization, and synergistic intensification

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-06-06 DOI:10.1016/j.ijhydene.2025.06.027

Jamna Prasad Gujar, Bharat Modhera

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引用次数: 0

Abstract

The aviation industry's decarbonization hinges on scalable, renewable fuel solutions that meet stringent performance and sustainability criteria. This review critically examines the catalytic valorization of glycerol a low-cost, abundant byproduct of biodiesel production into specification-compliant sustainable aviation fuel (SAF). After establishing the essential chemical and operational requirements for jet fuel, we assess the unique potential of glycerol as a feedstock, highlighting its molecular adaptability for conversion into jet-range hydrocarbons. The review systematically explores mainstream SAF production routes, with a focus on advanced catalytic processes such as hydrodeoxygenation, hydrocracking, and hydroisomerization. Detailed mechanistic insights are provided into the regulation of carbon chain length and deoxygenation pathway selectivity, supported by key data from recent experimental and techno-economic studies. Challenges related to catalyst stability, hydrogen efficiency, and process integration are critically analyzed, alongside sustainability metrics and policy frameworks essential for commercial deployment. By distilling landmark research and synthesizing advances in catalysis, reaction engineering, and regulatory strategy, this work offers a comprehensive roadmap for accelerating the adoption of glycerol-derived SAFs. The findings underscore the pivotal role of catalytic innovation and cross-sector collaboration in achieving aviation's net-zero ambitions.

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甘油在可持续航空燃料中的催化增值：加氢脱氧、加氢异构化和增效强化

航空业的脱碳取决于可扩展的可再生燃料解决方案，这些解决方案必须满足严格的性能和可持续性标准。本文综述了低成本、丰富的生物柴油副产品甘油的催化增值转化为符合规范的可持续航空燃料（SAF）。在确定了航空燃料的基本化学和操作要求之后，我们评估了甘油作为原料的独特潜力，强调了其转化为喷气烃类的分子适应性。综述系统地探讨了主流的SAF生产路线，重点介绍了先进的催化工艺，如加氢脱氧、加氢裂化和加氢异构化。在最近的实验和技术经济研究的关键数据的支持下，对碳链长度和脱氧途径选择性的调节提供了详细的机制见解。此外，还对催化剂稳定性、氢效率和工艺集成方面的挑战进行了批判性分析，并对商业部署所必需的可持续性指标和政策框架进行了分析。通过提炼催化、反应工程和调控策略方面的里程碑式研究和合成进展，本工作为加速采用甘油衍生SAFs提供了全面的路线图。研究结果强调了催化创新和跨部门合作在实现航空业净零排放目标方面的关键作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.