English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/156260
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Effect of mild oxidation on the surface chemistry of bituminous coals under different humidity conditions

AuthorsVega González, María Fernanda ; Acevedo Muñoz, Beatriz ; Díaz-Faes González, Elvira ; Barriocanal Rueda, Carmen
KeywordsBituminous coal
Oxidation
Surface chemistry
XPS
Issue Date8-Jun-2017
PublisherElsevier
CitationInternational Journal of Coal Geology 179: 164-172 (2017)
AbstractThe influence of humidity conditions on the oxidation of four coals has been studied on the basis of their surface chemistry. A systematic study was carried out in which four coals of different rank were oxidised at 50 °C in two conditions of humidity (20 and 90% moisture levels) and in an air atmosphere. The changes in the surface functional groups were measured by means of diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and X-ray photoelectron spectroscopy (XPS). The lowest rank coals were the most affected by oxidation in all the humidity conditions applied. In the case of the higher rank coals, higher moisture levels promoted the oxidation process. The number of oxygen-containing structures increased after oxidation, the most abundant being the carbonyl and carboxyl groups.
Publisher version (URL)https://doi.org/10.1016/j.coal.2017.06.001
URIhttp://hdl.handle.net/10261/156260
DOI10.1016/j.coal.2017.06.001
ISSN0166-5162
E-ISSN1872-7840
Appears in Collections:(INCAR) Artículos
Files in This Item:
File Description SizeFormat 
Effect_mild_Vega_2017.pdf533,07 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.