The catalytic activity of halloysite-supported Ru nanoparticles in the methanolysis of sodium borohydride for hydrogen production

Gözeten İ., Karakaş K., Karataş ., Tunç M., Gülcan M.

International Journal of Hydrogen Energy, vol.48, no.92, pp.35838-35849, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 92
  • Publication Date: 2023
  • Doi Number: 10.1016/j.ijhydene.2023.05.297
  • Journal Name: International Journal of Hydrogen Energy
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Artic & Antarctic Regions, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Environment Index, INSPEC
  • Page Numbers: pp.35838-35849
  • Keywords: Hydrogen energy, Methanolysis, Nanocatalyst, Ruthenium, Sodium borohydride
  • Van Yüzüncü Yıl University Affiliated: Yes


Finding environmentally friendly new energy sources is very urgent for a sustainable and clean energy future. It is vital to reach clean energy sources such as hydrogen, which does not create a polluting by-product when burned with oxygen. In this study, for a livable clean universe, hydrogen production studies were carried out from sodium borohydride (NaBH4), which is a very good hydrogen storage material, in a methanolysis environment, over ruthenium nanoparticles (Ru (0) NPs) impregnated on halloysite (Hall) support material (Ru (0)@Hall) at room conditions. The catalytic performance of the newly synthesized Ru (0)@Hall nanocatalyst was tested in the NaBH4 methanolysis reaction for hydrogen production. It was determined that Ru (0)/Hall nanocatalyst showed excellent activity (initial turn-over frequency (TOFinitial) = 1882 h−1; 31.37 min−1) and reusability (at the end of the 5th cycle, it retained 90% of its initial activity) performance in the catalytic methanolysis of NaBH4. The analyzes of the Ru (0)@Hall nanocatalyst, both fresh and at the end of the 5th catalytic cycle, were made with advanced analytical methods (ICP-OES, XRD, XPS, SEM, HRTEM, TEM, TEM-EDX, BET) and the nature of the catalytic material was clarified. The results showed the homogeneous distribution of Ru (0) NPs on the Hall surface (mean size = 1.53 ± 0.17 nm). Kinetic studies of hydrogen production from catalytic methanolysis reaction of NaBH4 were performed based on nanocatalyst [Ru (0)@Hall], substrate [NaBH4] concentrations, and temperature (298–318 K). From the kinetic data, the kinetic parameters (Ea, ΔH≠, and ΔS≠) were calculated and the rate equation was determined.