Co/CuO-NiO-Al2O3 catalyst for hydrogen generation from hydrolysis of NaBH4

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Erat N., Bozkurt G., Özer A.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, cilt.47, sa.58, ss.24255-24267, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 47 Sayı: 58
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.ijhydene.2022.05.178
  • Dergi Adı: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Artic & Antarctic Regions, Chemical Abstracts Core, Communication Abstracts, Environment Index, INSPEC
  • Sayfa Sayıları: ss.24255-24267
  • Anahtar Kelimeler: Trimetallic oxide support, Co/CuO-NiO-Al2O3 catalyst, Sodium borohydride, Hydrolysis, Hydrogen generation, SODIUM-BOROHYDRIDE HYDROLYSIS, CO-B CATALYST, SUPPORTED CO, EFFICIENT HYDROLYSIS, COMPOSITE CATALYST, NICKEL FOAM, COBALT, NANOPARTICLES, NI, ELECTROCATALYST
  • Atatürk Üniversitesi Adresli: Evet

Özet

This paper presents hydrogen generation measurements from the hydrolysis of NaBH4 aqueous solutions catalyzed by Co doping on single, bimetallic and trimetallic oxide supports (Co/CuO, Co/NiO, Co/Al2O3, Co/NiO-Al2O3, Co/CuO-Al2O3, and Co/CuO-NiO-Al2O3). Support materials are synthesized by the co-precipitation method. Then, Co is doped into support materials by the impregnation method. It is found that Co/CuO-NiO-Al2O3 catalyst exhibited high reaction activity with a maximum hydrogen generation rate (HGR) of 2067.2 ml min(-1) g(cat)(-1) at 25 degrees C. The effect of temperature of the solution, Co amount, and recyclability of the catalyst on hydrogen generation with Co/CuO-NiO-Al2O3 catalyst is investigated in detail. In addition, the highest HGR for Co/CuO-NiO-Al2O3 catalyst is obtained at 55 degrees C as 6460.0 ml min(-1) g(cat)(-1). The activation energy is calculated to be 31.59 kJ mol(-1) using Co/CuO-NiO-Al2O3 catalyst. Co/CuO-NiO-Al2O3 catalyst exhibits zero-order reaction kinetics concerning NaBH4 concentration. In addition, the Co/CuO-NiO-Al2O3 catalyst provided high reusability after 5 cycles. (C) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.