Akademik Veri Yönetim Sistemi
Journal of Polymers and the Environment, cilt.31, sa.8, ss.3445-3453, 2023 (SCI-Expanded)
In this study, for the first time, metal-free polymeric catalysts for H2 production from NaBH4 hydrolysis were synthesized from Oxalic acid (OxA) by redox polymerization technique in a surfactant-free emulsion medium. The structural and physicochemical properties of these polymeric catalysts [p(OxA)] were investigated by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM) analyses. In addition, the effects of parameters such as reaction temperature, amount of polymeric particle, and NaBH4 concentration on H2 gas production were investigated. It was found that the NaBH4 hydrolysis reaction by oxalic acid-based catalysts follows first-order kinetics. At the same, the maximum hydrogen production rate was reached at 50 °C in hydrolysis reactions performed at different temperatures in the presence of different amounts of p(OxA) particles. These values for 0.1 g, 0.3 g, and 0.5 g p(OxA) were calculated as 29.41 mL H2 gcatalys−1 dak−1, 27.78 mL H2 gcatalys−1 dak−1, 21.74 mL H2 gcatalys−1 dak−1, respectively. The results obtained suggest that metal-free oxalic-based polymeric particles are promising catalyst systems in the production of H2 gas.