Supercritical ethanol-assisted catalytic upgrading of bio-tar using mesoporous SBA-15 supported Ni-based catalysts

被引：3

作者：

Lee J.-H. ^{[1
]}

Amini G. ^{[2
]}

Park J.-Y. ^{[2
]}

Lee I.-G. ^{[2
]}

机构：

[1] Rocket Propulsion Directorate, Agency for Defense Development, Yuseong P.O.Box 35, Daejeon

[2] Energy Resources Upcycling Research Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Daejeon

来源：

Journal of the Energy Institute | 2024年 / 114卷

基金：

新加坡国家研究基金会;

关键词：

Biofuel; Hydrodeoxygenation; Ni-based catalyst; Supercritical ethanol; Upgrading; Value-added chemicals;

D O I：

10.1016/j.joei.2024.101591

中图分类号：

学科分类号：

摘要：

The bio-tar transformation was conducted utilizing Ni-based catalysts supported on mesoporous SBA-15 within a supercritical ethanol environment. This approach aimed to facilitate the synthesis of biofuels and/or value-added chemical compounds, including alkyl phenols and aromatics. The characterization of the catalysts was accomplished by X-ray diffraction (XRD), N2-sorption, temperature programmed reduction (TPR), Transmission electron microscope (TEM), and Fourier Transform Infrared (FT-IR) techniques. Among the examined catalysts, namely SBA-15, Ni/SBA-15, Ni–Mo/SBA-15, and Mg–Ni–Mo/SBA-15, Mg–Ni–Mo/SBA-15 emerged as the catalyst demonstrating the most pronounced activity for the hydrodeoxygenation (HDO) of bio-tar to produce high-quality liquid products (Total Acid Number (TAN): 3.4 mgKOHg−1, oxygen content: 11.0 wt%, Higher heating value (HHV): 36.7 MJkg−1). The effect of reaction temperature (275–350 °C) and time (0–120 min) on the upgrading of bio-tar over Mg–Ni–Mo/SBA-15 was investigated in a one-pot process. The acids, aldehydes, and oxygenated phenols underwent complete conversion into chemically more stable compounds such as aromatics and alkyl phenols at 325 °C for a 120 min holding time. In particular, the oxygenated phenols found in the bio-tar underwent a complete transformation into alkyl phenols within the liquid products. © 2024 Energy Institute

引用

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