INCAPE   05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
Operando Raman spectroscopic studies of lithium zirconates during CO2 capture at high temperature
Autor/es:
DIANA PELTZER, JOHN MÚNERA, LAURA CORNAGLIA
Revista:
RSC Advances
Editorial:
Royal Society of Chemistry
Referencias:
Año: 2016 vol. 6 p. 8222 - 8231
Resumen:
Li2ZrO3 based sorbents weresynthesized for CO2 capture at high temperature between 500 and 700ºC. Monoclinic ZrO2, tetragonal Li2ZrO3, Li2CO3,K2CO3 and LiKCO3 phases were detected by XRDand Raman Spectroscopy. The sorbents showed high stability and moderate captureefficiency. The addition of K resulted in the improvement of capture efficiencyfrom 0.052 g CO2 g mat-1 in materials without K to 0.083g CO2 g mat-1 in the doped solid. Here, we report anexperimental setup of Raman spectroscopy coupled with online mass spectrometryand a demonstration of its capabilities using lithium zirconates as sorbentsfor high temperature CO2 capture. Operando Raman Spectroscopy allowed us to followup the phase evolution during the capture process for the first time. Theresults obtained confirmed the presence of molten K and Li carbonates when theK-doped zirconates were exposed to CO2 at 500 ºC.