Abstract
In the present study, Co/CNT and Ce/CNT catalysts are prepared via sodium borohydride (NaBH4) reduction method. Co/CNT and Ce/CNT catalysts are examined to the dehydrogenation and electrooxidation of NaBH4. NaBH4 dehydrogenation activities of these Co/CNT and Ce/CNT catalysts are performed in alkaline environment. 5% Co/CNT catalyst exhibits superior hydrogen evolution compared with other catalysts. Activation energy is calculated using Arrhenius equation. Initial rate for this catalyst is found as 1700 ml H2 g-1cat min-1. As a result of the kinetic calculations, the activation energy of the catalyst is calculated as 44,68775 kj/mol. The degree of reaction (n) is found to be 0.5 by trial and error. In conclusion, 5% Co/CNT catalyst is a promising catalyst for hydrogen production from NaBH4. Cyclic voltammetry (CV) analysis is utilized to examine the electrochemical activity of the catalysts for NaBH4 electrooxidation. 0.1% Co/CNT catalyst has 0.38 mA cm-2 (3181 mA mg-1 Co) specific activity.
| Original language | English |
|---|---|
| Pages (from-to) | 389-400 |
| Number of pages | 12 |
| Journal | International Journal of Ecosystems and Ecology Science |
| Volume | 10 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2020 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2020, Hysen MANKOLLI. All rights reserved.
Keywords
- Ce
- Co
- Dehydrogenation
- Electrooxidation
- Sodium borohydride
