PDMA cryogel beads as a catalyst for hydrogen generation from NaBH4 alcoholysis


International Journal of Hydrogen Energy, vol.48, no.76, pp.29530-29541, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 76
  • Publication Date: 2023
  • Doi Number: 10.1016/j.ijhydene.2023.04.074
  • 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, Communication Abstracts, Environment Index, INSPEC
  • Page Numbers: pp.29530-29541
  • Keywords: Hydrogen production, NaBH4-ethylene glycolysis, NaBH4-methanolysis, PDMA cryogel beads
  • Eskisehir Osmangazi University Affiliated: Yes


Poly[2-(dimethylamino)ethyl methacrylate] cryogel beads were prepared under cryogenic conditions via free radical polymerization and used as a catalyst in the production hydrogen (H2) from NaBH4 by alcoholysis. The efficiency of the catalyst was investigated in the range of 0–40 °C by both methanolysis and ethylene glycolysis reactions, and its reuse was tested. Accordingly, it was observed that the methanolysis reaction was faster than the ethylene glycolysis reaction. When the hydrogen generation rate (HGR) values between 0 and 40 °C were compared, it was concluded that the methanolysis reaction rate increased from 1550 to 4800 mL.min−1g−1 and the ethylene glycolysis reaction rate increased from 923 to 3551 mL.min−1g−1. In the alcoholysis reaction catalyzed by PDMA cryogel beads, the activation energy was calculated as 19.34 and 22.77 kJ.mol−1 for the methanolysis and ethylene glycolysis reactions, respectively. After six repetitions, the catalyst activity was calculated over 50% for NaBH4 methanolysis and ethylene glycolysis.