Highly active and stable CeO2 supported nickel-complex catalyst in hydrogen generation

Dilek Kilinc*, Omer Sahin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Cerium oxide supported 5-Amino-2,4-dichlorophenol-3,5-ditertbutylsalisylaldimine-Nickel complex for the first time was used to produce H2 from hydrolysis of sodium borohydride. Cerium oxide supported Nickel complex catalyzed hydrolysis system was studied depend on temperature, concentration of sodium hydroxide, amount of Cerium oxide supported Ni complex catalyst, concentration of Ni complex and concentration of sodium borohydride. Cerium oxide supported Ni(II) complex display highly effective catalytic activity in sodium borohydride hydrolysis reaction. The obtained Cerium oxide supported Ni(II) complex catalyst was characterized by using Fourier Transform Infrared Spectroscopy, Scanning Electron Microscope, Transmission Electron Microscope, Brunauer-Emmett-Teller Surface Area Analysis, X-Ray Diffraction Analysis techniques. The catalyst stability was tested, even the fifth recycle the catalytic activity was maintained at 100%. Additionally the proposed Cerium oxide supported-Ni (II) complex catalyzed sodium borohydride hydrolysis mechanism was determined carefully. The experimental results showed that Cerium oxide supported Ni (II) complex catalyst accelerate sodium borohydride hydrolysis with 43,392 and 19,630 mL H2 gcat−1 min−1 hydrogen production rates at 50 °C and 30 °C respectively and 20,587 kJ mol−1 activation energy.

Original languageEnglish
Pages (from-to)499-507
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume46
Issue number1
DOIs
Publication statusPublished - 1 Jan 2021
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2020 Hydrogen Energy Publications LLC

Keywords

  • CeO
  • Hydrogen generation
  • NaBH
  • Ni-complex

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