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

BÜTÜN ŞENGEL S., Deveci H., BÜTÜN V.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, cilt.48, sa.76, ss.29530-29541, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 48 Sayı: 76
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1016/j.ijhydene.2023.04.074
  • 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, Chimica, Communication Abstracts, Compendex, Environment Index, INSPEC
  • Sayfa Sayıları: ss.29530-29541
  • Anahtar Kelimeler: PDMA cryogel beads, Hydrogen production, SODIUM-BOROHYDRIDE NABH4, METAL-FREE CATALYST, H-2 GENERATION, ACETIC-ACID, HYDROLYSIS, METHANOLYSIS, REGENERATION, STORAGE, NANOPARTICLES, MICROGELS
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

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 & DEG;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 & DEG;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. & COPY; 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.