ITHES   25084
INSTITUTO DE TECNOLOGIAS DEL HIDROGENO Y ENERGIAS SOSTENIBLES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Kinetic study for carbonation reaction of CaO derived sorbents
Autor/es:
ML DIEUZEIDE; NORMA AMADEO; ROGER AVENDAÑO; PABLO BONELI; ROBERTO TEJEDA
Lugar:
SAN DIEGO
Reunión:
Congreso; 17th International Congress On Catalysis i; 2020
Resumen:
In last years, sorption-enhanced steam reforming of ethanol (SESRE) has become an interesting alternative for the industry, since it offers high H2 purity with a simpler and smaller system. The ethanol steam reforming (ESR) involves a complex system of reactions that affects the H2 selectivity. In fact, the H2 produced by this process contains significant amounts of CO, which poisons the anode at the PEM fuel cell. To increase H2 purity in the gaseous product containing additionally CH4, CO2, and CO, removing of CO2 by sorption reaction with a sorbent might be an alternative to decrease specially CO concentration [1]. In this study a dispersant and inert phase (Ca12All4O33) was incorporated into CaO structure to synthetize a stable sorbent.The gas?solid reaction between CO2 and CaO takes place in three consecutive steps that involves reaction, external and intraparticle diffusion. This research is part of a global study of ethanol steam reforming reaction with simultaneous CO2 absorption (SESRE). The aim of this work is to carry out the kinetic study for the carbonation reaction between CO2 and CaO/Ca12All4O33 (85/15) sorbent. A series of experiments using a thermogravimetric analyser (TGA) were conducted in order to stablish the parameters kinetics data for carbonation process