Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13087/2696
Title: Influence of acid activation on the NH3-adsorption properties of a Turkish bentonite
Authors: Erdoğan, Burcu
Ergürhan, Orkun
Anter, Aslihan
Keywords: adsorption
ammonia
bentonite
TG/DTA
XRD
Ammonia Adsorption
Aqueous-Solutions
Clay
Montmorillonite
Co2
Composites
Adsorbents
Ethylene
Hydrogen
Sorption
Issue Date: 2021
Publisher: Cambridge Univ Press
Abstract: In this study, the adsorption of NH3 gas on a bentonite from Unye (Turkey) in its natural state and after acid treatments, was investigated experimentally at 298 K and up to 100 kPa. Bentonite was treated with HCl solutions of various concentrations (0.5-2.5 M) at 75 degrees C for 4 h. X-ray diffraction (XRD), X-ray fluorescence (XRF), N-2 adsorption and thermogravimetric/differential thermal analysis (TG/DTA) were used to characterize the bentonite before and after acid treatment. The quantitative XRD analysis demonstrated that the bentonite sample was composed predominantly of smectite (75%), with abundant feldspar (20%) and minor opal-CT, analcime and quartz (5%). Increasing gas adsorption values of acid-treated bentonites were analysed depending on the structural changes of the clay. The NH3 adsorption capacities of the bentonite samples (3.801-5.068 mmol g(-1)) were also compared with previously studied clay-based materials (0.828-4.000 mmol g(-1)) in terms of their textural and structural differences.
URI: https://doi.org/10.1180/clm.2021.31
https://hdl.handle.net/20.500.13087/2696
ISSN: 0009-8558
1471-8030
Appears in Collections:Fizik Bölümü Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu

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