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https://hdl.handle.net/20.500.13091/5876
Title: | Preparation of an efficient and reusable cobalt doped vermiculite ore catalyst for hydrogen production from sodium borohydride | Authors: | Karakaya, Şeyma Pehlivan, Erol Ceyhan, Ayhan Abdullah |
Keywords: | Sodium borohydride Vermiculite Hydrogen Catalyst Cobalt Acid-Activated Montmorillonite Hydrolysis Generation Adsorption Kinetics Clay Ni Optimization Composite Support |
Publisher: | Pergamon-Elsevier Science Ltd | Abstract: | In this study, the applicability of a Co2+-doped catalyst [(Co-Ver)cat] fabricated from clay vermiculite ore for the synthesis of hydrogen from sodium borohydride was investigated. FT-IR, XRD, SEM, Brunauer-Emmett-Teller (BET) analysis, and X-ray fluorescence (XRF) studies were used to characterize the synthesized (Co-Ver)cat. After activation with 1 M HCl, 0.15 g the 30% Co2+-doped catalyst (7% NaOH, 2.5% NaBH4, 30 degrees C process temperature) produced the maximum catalytic activity. Under these conditions, the hydrogen generation rate of 1991,39 ml gCo(-1) min(-1) was achieved with the (Co-Ver)cat. The NaBH4 hydrolysis reaction had an activation energy of 43.58 kJ mol(-1) and a reaction rate order (n) of 0.18. It was also determined that the prepared (Co-Ver)cat exhibited good reusability. The reusability of the (Co-Ver)cat prepared from vermiculite ore was high, and 91.78% of the expected hydrogen amount was obtained as a result of its 10th use. | URI: | https://doi.org/10.1016/j.ijhydene.2024.06.035 https://hdl.handle.net/20.500.13091/5876 |
ISSN: | 0360-3199 1879-3487 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections |
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