English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/140056
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

Characterization of a sol-gel derived CuO/CuAl2O4 oxygen carrier for chemical looping combustion (CLC) of gaseous fuels: relevance of gas-solid and oxygen uncoupling reactions

AuthorsMei, Daofeng; Abad Secades, Alberto ; Zhao, Haibo; Adánez Elorza, Juan
KeywordsChemical looping combustion (CLC)
Chemical looping with oxygen uncoupling (CLOU)
Sol–gel method
Cu-based oxygen carrier
CO2 capture
Issue DateMay-2015
PublisherElsevier
CitationFuel Processing Technology 133: 210-219 (2015)
AbstractA new sol–gel CuO/CuAl2O4 material was characterized in a thermogravimetric analyzer (TGA) for chemical looping combustion (CLC) with gaseous fuels, including the relevance of the oxygen uncoupling mechanism in oxygen transference was considered. This material possesses high reactivity and oxygen transport capacity, which combines the best features of the previously reported impregnated and spray-dried materials. During the cycles with N2 and air, CuO was fully decomposed into Cu2O in N2 and then regenerated to CuO in air, similarly to chemical looping with oxygen uncoupling (CLOU) for solid fuels. Decomposition of CuAl2O4 to CuAlO2 was quite slow, and the followed regeneration cannot be accomplished. Subsequently, the adequate and stable reaction rates of this material were examined in high numbers of cycles (>50 cycles) with gaseous fuels. The material undergone such cycles with gaseous fuels was then subjected to cycles with N2 and air. Segregation of CuO from Al2O3 in the CuAl2O4 was observed during gaseous fuels combustion, which produced more available oxygen for CLOU than the initial material. Finally, the relative importance of gas–solid reactions in CLC against oxygen uncoupling in CLOU was examined with the appearance of gaseous fuel.
Publisher version (URL)http://dx.doi.org/10.1016/j.fuproc.2015.02.007
URIhttp://hdl.handle.net/10261/140056
DOI10.1016/j.fuproc.2015.02.007
ISSN0378-3820
Appears in Collections:(ICB) Artículos
Files in This Item:
File Description SizeFormat 
Postprint_2015_Mei et al_Fuel Process Technol-1.pdf1,24 MBAdobe 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.