Abstracts Book - IMRC 2018

• SC2-P003
Y-DOPED CERIA AND Y-DOPED ZIRCONIA DENSE DUAL-PHASE
MEMBRANES FOR HIGH-TEMPERATURE CO2 SEPARATION
Daniela Gonzalez Varela 1 , Heriberto Pfeiffer Perea 2
1 Instituto de Investigaciones en Materiales, Materiales ceramicos y metalicos, Mexico. 2 Instituto
de Investigaciones en Materiales, Materiales metalicos y ceramicos, Mexico.
At the present time, the prospect of a worsening climatic situation, due to global
warming, is a subject of widespread public concern. In fact, during the last two
decades the greenhouse gas emissions have increased excessively, where the main
greenhouse gas is carbon dioxide (CO 2 ) produced by human activities as
combustion fossil fuels and several industrial activities.
The urgent need for strategies to reduce global carbon dioxide atmospheric
concentration has prompted different actions scientific community, which are
focused on the development of new materials and technologies for the separation,
capture or storage of the CO 2 . From this perspective, high-temperature membranebased
CO 2 separation technology would open the door for innovative process
designs ranging advanced power generation systems, such as IGCC (integrated
gasified combined cycle) or novel carbon fed fuel cells.
The dense dual-phase membranes are conformed of a porous solid support
infiltrated with molten carbonates, wherein the solid support is an oxygen ionic
conductor ceramic phase. Nowadays, several ceramic-carbonate dual-phase
systems have been studied to separate CO 2 at high temperatures as gadoliniumdoped
ceria (CGO) and samarium-doped ceria (SDC), presenting favorable results
the point of view of membrane stability and relatively high CO 2 permeation fluxes.
Therefore, in this work dense different Y-doped CeO 2 and ZrO 2 dual-phase
membranes were studied for CO 2 separation at high temperatures. Initially, ceramic
supports, disc shape, were fabricated and sintered at different temperatures,
analyzing their density and porosity. Then, all ceramic were infiltrated using an
eutectic mix carbonates melted at 600 °C. Membranes preparation conditions were
optimized to obtain stable, dual-phase membranes at high temperatures. Finally,
CO 2 permeation tests were performed at high temperatures using different feed
gas mixtures.
Keywords: Dual-phase membrane, CO2 permeation, ceramic-carbonate
Presenting authors email: dagova13@gmail.com