Dudu, Tuba ErsenSeker, Esra Ozer2025-05-102025-05-1020231566-25431572-891910.1007/s10924-023-02826-w2-s2.0-85150212774https://doi.org/10.1007/s10924-023-02826-whttps://hdl.handle.net/20.500.14720/1060In this study, for the first time, metal-free polymeric catalysts for H-2 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 H-2 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 degrees 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 H-2 g(catalys)(-1) dak(-1), 27.78 mL H-2 g(catalys)(-1) dak(-1), 21.74 mL H-2 g(catalys)(-1) dak(-1), respectively. The results obtained suggest that metal-free oxalic-based polymeric particles are promising catalyst systems in the production of H-2 gas.eninfo:eu-repo/semantics/closedAccessH-2 Gas ProductionMetal-Free CatalystNabh4 HydrolysisOxalic AcidArticle318Q1Q134453453WOS:000952916900001