Change search
ReferencesLink to record
Permanent link

Direct link
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
Show others and affiliations
2014 (English)In: Gorûcie slancy, ISSN 0208-189X, Vol. 31, no 1, 79-90 p.Article in journal (Refereed) Published
Abstract [en]

The present study focuses on the direct chemical adsorption of CO2 onto alkaline hydrothermally activated oil shale fly ash (OSFA). The CO2 chemisorption experiments were conducted in a high-pressure reactor at a temperature of 150 degrees C and CO2 partial pressure of 100 bar during a 24-hour period. Original, activated and chemisorbed OSFA samples were characterized by means of X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) coupled with energy-dispersive X-ray spectroscopy (EDS), specific surface area (BETN2) and high-resolution Si-29 magic angle spinning nuclear magnetic resonance (MAS-NMR). The results indicated moderate weight increase (max 5 wt%) and according to XRD and MAS-NMR analysis tobermorites had reacted with CO2, leading to calcite formation. The results also show that the alkaline hydrothermally activated OSFA has a potential to be used in industrial processes for direct chemical adsorption of CO2 from flue gases.

Place, publisher, year, edition, pages
2014. Vol. 31, no 1, 79-90 p.
Keyword [en]
tobermorites, direct CO2 sequestration, oil shale fly ash
National Category
Chemical Sciences
URN: urn:nbn:se:umu:diva-88297DOI: 10.3176/oil.2014.1.08ISI: 000333225900008OAI: diva2:716117
Available from: 2014-05-08 Created: 2014-04-29 Last updated: 2014-05-08Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Ritamäki, JohannesBoström, DanLarsson, WilliamKordas, KrisztianMikkola, Jyri-Pekka
By organisation
Department of Applied Physics and ElectronicsDepartment of Chemistry
In the same journal
Gorûcie slancy
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 144 hits
ReferencesLink to record
Permanent link

Direct link