Optimizing Fe-loaded catalysts in dual-stage pyrolysis-volatile reforming of biomass: Enhancing aromatic and hydrogen yield from wheat straw
This study investigates the optimization of Fe-loaded catalysts made from Al₂O₃ and char derived from wheat straw (WS) biomass, aimed at enhancing the yield of aromatic compounds and hydrogen (H₂) during dual-stage pyrolysis-volatile reforming. The findings indicate that a Fe loading of 15 wt% notably improves aromatic production and H₂ yields; specifically, the Fe/Char composite achieves an aromatic yield of 86.8 % and an H₂ output of 81.39 mL/g, compared to yields of 79.8 % and 36.37 mL/g for the Fe/Al₂O₃ catalyst at an optimal reforming temperature of 750°C. Without catalysts at 450°C, the yields of aromatic compounds and H₂ are 65.9 % and 1.81 mL/g, respectively. These results underscore the synergistic effects of elevated temperatures and the catalytic efficiency of Fe/Char in significantly enhancing aromatic and H₂ yields. Furthermore, biochar produced at the optimal temperature exhibits a yield of 67.8 %, demonstrating its potential as an effective support material for the Fe/Char composite and emphasizing the process's efficiency and economic sustainability for full product utilization. Characterization techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS), confirm the superior catalytic properties and structural advantages of biochar over Al₂O₃. This research emphasizes the critical role of catalyst design in the sustainable production of high-value biofuels from agricultural wastes, proposing a viable pathway for the advancement of efficient thermochemical biorefineries. © 2025 Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Библиографическая ссылка
Shi, Yansong, Zhao, Wenjing, Tahir, Mudassir Hussain, Lora, Electo Eduardo Silva, Kozlov A.N., Penzik M.V., Zhang, Yuming, Zhang, Shu¶ Optimizing Fe-loaded catalysts in dual-stage pyrolysis-volatile reforming of biomass: Enhancing aromatic and hydrogen yield from wheat straw // Journal of Analytical and Applied Pyrolysis. Vol.194. ID:107539. 2026. DOI: 10.1016/j.jaap.2025.107539
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