Exploring the impact of NaOH pre-treatment for H2 and CO2 adsorption on clinoptilolite
Yazarlar (1)
Doç. Dr. Ezgi BAYRAKDAR ATEŞ Yalova Üniversitesi, Türkiye
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | International Journal of Hydrogen Energy (Q1) | ||
| Dergi ISSN | 0360-3199 Wos Dergi Scopus Dergi | ||
| Dergi Tarandığı Indeksler | SCI-Expanded | ||
| Makale Dili | İngilizce | Basım Tarihi | 01-2024 |
| Kabul Tarihi | – | Yayınlanma Tarihi | 01-01-2024 |
| Cilt / Sayı / Sayfa | 50 / 0 / 990–1003 | DOI | 10.1016/j.ijhydene.2023.08.276 |
| Makale Linki | http://dx.doi.org/10.1016/j.ijhydene.2023.08.276 | ||
| Özet |
| The present investigation involved the treatment of natural clinoptilolite with varying concentrations of NaOH solutions followed by calcination. The samples' composition and structure were characterized and their performance was investigated in the context of hydrogen (H-2) and carbon dioxide (CO2) adsorption. While a decreasing SiO2/Al2O3 ratio was observed in the NaOH-treated samples, the morphological structure obtained from SEM images and the increase in surface area according to BET results exhibited more pronounced alterations, particularly within the 0.5-1 M NaOH concentration range. The alkali treatment resulted in notable peak sharpening, with the most prominent changes observed in the (020), (100), and (101) lattice planes at the same concentration. However, there were no significant alterations in peak intensities. Although H-2 adsorption (4.0192-26.4726 cm(3)/g) could reach higher values, higher amounts of CO2 adsorption (5.2308-20.2700 cm(3)/g) occurred as the concentration of NaOH increased. This phenomenon was attributed to structural modifications in clinoptilolites. (c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
| Anahtar Kelimeler |
| Clinoptilolite | Alkali treatment | Carbon dioxide adsorption | Hydrogen adsorption | Hydrogen storage | Natural clinoptilolite |