Abstract
In this study, a coal-based catalyst produced by protonating phosphoric acid was used as a metal-free catalyst for hydrogen production from sodium borohydride (NaBH4) methanolysis. Experiments were conducted with various acid concentrations, impregnation times, and carbonization temperatures and times in order to produce a metal-free coal catalyst with enhanced catalytic activity. The catalyst impregnated with 3M H3PO4 for 12 h and subsequently carbonized at 600°C for 90 min exhibited the highest catalytic activity. The hydrogen production at 60 °C methanolysis with 0.25 g of NaBH4 catalyzed by a metal-free coal catalyst was found to be 11,854 mL min−1g.cat−1. Additionally, the activation energy of the catalyst was determined to be 22.5 kJ mol-1.
Publisher
The Turkish Chemical Society
Reference39 articles.
1. Akdemir, M., Avci Hansu, T., Caglar, A., Kaya, M., & Demir Kivrak, H. (2021). Ruthenium modified defatted spent coffee catalysts for supercapacitor and methanolysis application. Energy Storage, 3(4), e243.
2. Akdemir, M., Karakaş, D. E., & Kaya, M. (2022). Synthesis of a dual‐functionalized carbon‐based material as catalyst and supercapacitor for efficient hydrogen production and energy storage: Pd‐supported pomegranate peel. Energy Storage, 4(1), e284.
3. Akpan, U. F., & Akpan, G. E. (2012). The contribution of energy consumption to climate change: a feasible policy direction. International Journal of Energy Economics and Policy, 2(1), 21-33.
4. Ali, F., Khan, S. B., & Asiri, A. M. (2019). Chitosan coated cellulose cotton fibers as catalyst for the H2 production from NaBH4 methanolysis. international journal of hydrogen energy, 44(8), 4143-4155.
5. Amrouche, S. O., Rekioua, D., Rekioua, T., & Bacha, S. (2016). Overview of energy storage in renewable energy systems. international journal of hydrogen energy, 41(45), 20914-20927.