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Título

Evaluation of (MnxFe1-x)2TiyOz particles as oxygen carrier for chemical looping combustion

AutorAbián, María; Abad Secades, Alberto ; Izquierdo Pantoja, María Teresa ; Gayán Sanz, Pilar ; Diego Poza, Luis F. de ; García-Labiano, Francisco; Adánez Elorza, Juan
Palabras claveCO2 capture
CLC
Manganese ferrites
Coal
Fecha de publicaciónjul-2017
EditorElsevier
CitaciónEnergy Procedia 114: 302-308 (2017)
ResumenThe present work accomplishes a screening of the performance of Mn-Fe-Ti based oxygen carriers, prepared with different Mn/(Mn+Fe) molar ratios in the general formula (MnyFe1-y)Ti0.15Ox. The oxygen carriers were prepared by physical mixing followed by pelletizing under pressure, calcining, crushing and sieving in the 100-300 μm particle size interval. The characterization of the carriers is based on the evaluation of their crushing strength, magnetic properties and reduction and oxidation behavior through TGA experiments at temperatures suitable for the CLC process (i.e. 850-950 °C). In addition, the main chemical structures of the Mn-Fe-Ti system were identified as a function of the Mn/(Mn+Fe) molar ratio. Oxygen uncoupling property was analyzed by reduction under a N2 atmosphere and the capability to interact with fuel gases was analyzed by using CH4, H2 and CO. Results indicate that the (MnyFe1-y)Ti0.15Ox oxygen carriers with Mn/(Mn+Fe) molar ratios of 0.55-0.87 have very promising properties for the CLC process with solid fuels.
Versión del editorhttps://doi.org/10.1016/j.egypro.2017.03.1171
URIhttp://hdl.handle.net/10261/159912
DOI10.1016/j.egypro.2017.03.1171
ISSN1876-6102
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