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NiCo bimetallic catalysts supported on activated carbon/CaAl layered double hydroxide nanosheets for boosting hydrogen production via supercritical water gasification of spruce hydrochar pellets

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  • Seraj, Somaye
  • Azargohar, Ramin
  • Dalai, Ajay K.

Abstract

Aiming to convert hydrothermal carbonization (HTC)-derived hydrochar pellets along with HTC-aqueous phase (HTC-AP) into renewable hydrogen via supercritical water gasification, a series of NiCo supported catalysts were prepared. A novel composite was devised as the support material for NiCo-catalysts. To this, activated carbon (AC) obtained by chemical activation of the hydrochar was modified using CaAl-layered double hydroxide (CaAl-LDH). The synthesized NiCo-catalysts (C0.5, C1, and C1.5) with different Co/Ni mass ratios (0.5, 1, and 1.5 wt/wt) were examined under various operating conditions. 10Ni5Co/AC@CaAl-LDH nanosheet catalyst (C0.5) presented highest hydrogen yield of 2.42 ± 0.05 mol/kg at 550 °C, with maximized hydrogen selectivity. Moreover, the impacts of Co/Ni mass ratio on the physicochemical properties of NiCo bimetallic supported catalysts were analyzed. The better performance of the C0.5 catalyst could originate from smaller particle size, higher specific surface area, and more reduced Ni and Co species compared with other catalyst formulations. Compared with 10Ni5Co/AC catalyst, C0.5 catalyst improved hydrogen yield by 30 % due to CaAl-LDH nanosheets, which provides a highly uniform NiCo distribution. Additionally, HTC-AP as the supercritical water gasification medium exhibited a 50 % increase in hydrogen yield compared to the ultrapure water in a noncatalytic reference test.

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  • Seraj, Somaye & Azargohar, Ramin & Dalai, Ajay K., 2025. "NiCo bimetallic catalysts supported on activated carbon/CaAl layered double hydroxide nanosheets for boosting hydrogen production via supercritical water gasification of spruce hydrochar pellets," Energy, Elsevier, vol. 321(C).
    • Handle: RePEc:eee:energy:v:321:y:2025:i:c:s0360544225010321
    DOI: 10.1016/j.energy.2025.135390
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    References listed on IDEAS

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    1. Gupta, Ankita & Siddiqui, Haseen & Rathi, Shivam & Mahajani, Sanjay, 2021. "Intra-pellet transport limitations in the pyrolysis of raintree leaves litter," Energy, Elsevier, vol. 216(C).
    2. Seraj, Somaye & Azargohar, Ramin & Dalai, Ajay K., 2025. "Dry torrefaction and hydrothermal carbonization of biomass to fuel pellets," Renewable and Sustainable Energy Reviews, Elsevier, vol. 210(C).
    3. Guo, Feiqiang & Peng, Kuangye & Liang, Shuang & Jia, Xiaopeng & Jiang, Xiaochen & Qian, Lin, 2019. "One-step synthesis of biomass activated char supported copper nanoparticles for catalytic cracking of biomass primary tar," Energy, Elsevier, vol. 180(C), pages 584-593.
    4. Vamvuka, Despina & Afthentopoulos, Evaggelos & Sfakiotakis, Stelios, 2022. "H2-rich gas production from steam gasification of a winery waste and its blends with industrial wastes. Effect of operating parameters on gas quality and efficiency," Renewable Energy, Elsevier, vol. 197(C), pages 1224-1232.
    5. Mahmood Ebadian & Shahab Sokhansanj & David Lee & Alyssa Klein & Lawrence Townley-Smith, 2021. "Evaluating the Economic Viability of Agricultural Pellets to Supplement the Current Global Wood Pellets Supply for Bioenergy Production," Energies, MDPI, vol. 14(8), pages 1-19, April.
    6. Bai, Ping & Lang, Junyu & Wang, Yinshu & Tong, Haojie & Wang, Zelin & Zhang, Bingbing & Su, Yiguo & Chai, Zhanli, 2024. "Z-scheme ZnCdS/NiCo-LDH photocatalyst followed dual-channel charge transfer via Au-intercalation for renewable hydrogen production," Renewable Energy, Elsevier, vol. 226(C).
    7. Medick, Jakob & Teichmann, Isabel & Kemfert, Claudia, 2018. "Hydrothermal carbonization (HTC) of green waste: Mitigation potentials, costs, and policy implications of HTC coal in the metropolitan region of Berlin, Germany," Energy Policy, Elsevier, vol. 123(C), pages 503-513.
    8. Santos J, J.M. & Zelioli, Í.A.M. & Guimarães F, E.É.X. & Freitas, A.C.D. & Mariano, A.P., 2024. "Supercritical water gasification thermodynamic study and hybrid modeling of machine learning with the ideal gas model: Application to gasification of microalgae biomass," Energy, Elsevier, vol. 291(C).
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