Optimizing green diesel-like hydrocarbons from direct hydrodeoxygenation of oleic acid using Zr-MOF/SBA-3 catalyst

IF 2.8 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology Pub Date : 2025-03-17 DOI:10.1002/jctb.7847

Heba M Salem, Dalia R Abdelhafiz, Aya M Matloob

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引用次数: 0

Abstract

BACKGROUND

The increasing environmental concerns and depletion of fossil fuels necessitate the development of sustainable alternatives such as biofuels. Biofuels are renewable and emit fewer pollutants than traditional fossil fuels, making them a critical component of the global energy transition. Hydrodeoxygenation (HDO) is a key reaction in renewable fuel production, removing oxygen from biomass-derived feedstocks to produce hydrocarbon fuels. Oleic acid (OA), a monounsaturated fatty acid abundant in non-edible and waste cooking oils, serves as an ideal feedstock for HDO due to its high unsaturated fatty acid content and availability.

RESULTS

This study investigates direct HDO of OA, a potential route for sustainable biofuels. A novel Zr-MOF/SBA-3 catalyst is meticulously synthesized to leverage the combined strengths of Zr-MOF's active sites and SBA-3's porous structure for optimal HDO performance. Various characterization techniques unveil the catalyst's structural and morphological properties. The impact of reaction temperature, liquid hourly space velocity, and reaction time on diesel-like hydrocarbon conversion and selectivity is explored. Under optimized conditions (360 °C, atmospheric pressure, 10 h), hydrocarbon selectivity reaches 91.6%. Kinetic studies reveal Arrhenius behavior for OA conversion, with an activation energy of 120 kJ mol⁻¹.

CONCLUSION

The integration of SBA-3 with Zr-MOF in the hybrid material enhanced its thermal stability and acid site distribution, resulting in a promising Zr-MOF/SBA-3 catalyst for HDO reactions of OA. These findings suggest a promising approach for converting renewable OA into diesel-like hydrocarbons. © 2025 Society of Chemical Industry (SCI).

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Zr-MOF/SBA-3催化剂催化油酸直接加氢脱氧制备绿色类柴油化合物

背景：日益严重的环境问题和化石燃料的枯竭使发展生物燃料等可持续替代品成为必要。生物燃料是可再生的，比传统化石燃料排放的污染物更少，使其成为全球能源转型的关键组成部分。加氢脱氧（HDO）是可再生燃料生产中的关键反应，从生物质原料中去除氧气以生产碳氢化合物燃料。油酸（OA）是一种富含非食用和废弃食用油的单不饱和脂肪酸，由于其高不饱和脂肪酸含量和可用性而成为HDO的理想原料。本研究探讨了OA的直接HDO，这是可持续生物燃料的潜在途径。精心合成了一种新型Zr-MOF/SBA-3催化剂，利用Zr-MOF活性位点和SBA-3多孔结构的综合优势，获得最佳的HDO性能。各种表征技术揭示了催化剂的结构和形态性质。探讨了反应温度、液时空速和反应时间对类柴油烃转化率和选择性的影响。在优化条件下（360℃，常压，10 h），烃类选择性达到91.6%。动力学研究表明OA转化为Arrhenius行为，活化能为120 kJ mol−1。结论SBA-3与Zr-MOF的结合增强了杂化材料的热稳定性和酸位分布，是一种很有前景的用于OA HDO反应的Zr-MOF/SBA-3催化剂。这些发现提出了一种将可再生OA转化为类似柴油的碳氢化合物的有希望的方法。©2025化学工业学会（SCI）。

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来源期刊

Journal of chemical technology and biotechnology 工程技术-工程：化工

CiteScore

7.00

自引率

5.90%

发文量

268

审稿时长

1.7 months

期刊介绍： Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.