Artículo
Comparative study of lithium-based CO2 sorbents at high temperature: Experimental and modeling kinetic analysis of the carbonation reaction
Peltzer, Diana Jacqueline
; Salazar Hoyos, Luis Alfonso
; Faroldi, Betina María Cecilia
; Múnera Agudelo, John Fernando
; Cornaglia, Laura Maria
Fecha de publicación:
10/2020
Editorial:
Elsevier
Revista:
Journal of Environmental Chemical Engineering
ISSN:
2213-3437
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
This work focuses on the study of the CO2 capture kinetic properties and reactivity of different alkali-based sorbents. Three samples, K-doped Li2ZrO3, mixed Li2ZrO3-Na2ZrO3, and Li4SiO4, were characterized and evaluated by thermogravimetric analysis under different reaction conditions. The presence of alkali zirconate and silicate phases was confirmed by XRD and Raman spectroscopy. The Li-Na zirconate showed the fastest initial reaction rates and the strongest dependence on the temperature, while the K-doped Li zirconate presented a higher dependence on the CO2 concentration. The activation energies derived from the modeling with the double exponential and the Avrami Erofeev model were consistent with the calculated apparent activation energy. Finally, the phase evolution followed by operando Raman Spectroscopy during the capture process was in agreement with the kinetic analysis, confirming the higher reactivity of the Li4SiO4 and Li-Na zirconate derived samples.
Palabras clave:
CO2CAPTURE
,
KINETICS
,
LI SILICATE
,
LI-NA ZIRCONATES
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(INCAPE)
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Citación
Peltzer, Diana Jacqueline; Salazar Hoyos, Luis Alfonso; Faroldi, Betina María Cecilia; Múnera Agudelo, John Fernando; Cornaglia, Laura Maria; Comparative study of lithium-based CO2 sorbents at high temperature: Experimental and modeling kinetic analysis of the carbonation reaction; Elsevier; Journal of Environmental Chemical Engineering; 8; 5; 10-2020; 1-13
Compartir
Altmétricas