Effective TiO2 supported Cu-Complex catalyst in NaBH4 hydrolysis reaction to hydrogen generation


Kilinc D., Sahin Ö.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol.44, no.34, pp.18858-18865, 2019 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 44 Issue: 34
  • Publication Date: 2019
  • Doi Number: 10.1016/j.ijhydene.2018.12.225
  • Title of Journal : INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Page Numbers: pp.18858-18865
  • Keywords: Cu-complex, Catalyst, Schiff base, Hydrolysis, NaBH4, SODIUM-BOROHYDRIDE, HETEROGENEOUS CATALYST, REUSABLE CATALYST, STORAGE MATERIALS, H-2 PRODUCTION, IONIC LIQUID, LOW-COST, REGENERATION, HYDRIDES, NANOPARTICLES

Abstract

This paper reports the experimental results on using TiO2 based Cu(II)-Schiff Base complex catalyst for hydrolysis of NaBH4. In the presence of Cu-Schiff Base complex which we reported in advance [1] and with titanium dioxide supports a novel catalyst named TiO2 supported 4-4'-Methylenbis (2,6-diethyl)aniline-3,5-di-tert-buthylsalisylaldimine-Cu complex is prepared, successfully. The synthesized catalyst was characterized by means of X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), Brunauer-Emmett-Teller Surface Area Analysis (BET) and Fourier Transform Infrared Spectroscopy (FT-IR). The as prepared catalyst was employed to generate hydrogen through hydrolysis reaction of NaBH4. Effects of different parameters (e.g. amount of Cu-Schiff Base complex in all catalyst, percentage of NaBH4, percentage of NaOH, amount of TiO2 supported Cu-Schiff Base complex catalyst and different temperatures) are also investigated. A high apparent activation energy (Ea), 25,196 kJ.mol(-)1 is calculated for hydrolysis of NaBH4 at 20-50 degrees C. Hydrogen generation rate was 14,020 mL H-2/g(cat).min and 22,071 mL H-2/g(cat).min in order of 30 degrees C and 50 degrees C. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.