INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, cilt.48, sa.11, ss.4173-4181, 2023 (SCI-Expanded)
In this study, the functional group contents of coals of different geological ages to be used in hydrogen production by electrolysis were examined by Fourier Transform Infrared Spectroscopy (FT-IR) analysis, and parametric studies were carried out with the coal type with the highest functional group content. In the parametric studies, the effect of Fe2+ ions with known catalytic activity in coal electrolysis, the effects of electrode activation, different electrode materials, temperature, coal concentration and distance between electrodes on current density were investigated. Also, long-term performance test was carried out. It was found that, the highest current density values were observed in the presence of Fe2+ ions, at the activated Zn/Zn electrode material and at the nearest elec-trode distance. In addition to these results, it was determined that instead of high tem-peratures, high current density values can be obtained at relatively low temperatures such as 50 degrees C and lower coal concentrations.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.