Chemical sorption of carbon dioxide (CO2) on lithium oxide (Li2O)
Por:
Mosqueda H.A., Vazquez C., Bosch P., Pfeiffer H.
Publicada:
1 ene 2006
Resumen:
The behavior of lithium oxide (Li2O) under an atmosphere of CO2 was studied using thermogravimetric analysis, scanning electron microscopy, and X-ray diffraction techniques. Results show that Li2O can be used for CO2 retention. It is a better absorbent than other lithium ceramics. A chemisorption topochemical reaction is proposed to explain the sorption of CO2. The kinetic parameters were obtained. First, the CO2 sorption is controlled by a first-order reaction. Later, CO 2 sorption depends on the diffusion of lithium through the formed shell of Li2CO3, with an extraordinary increase of the diffusion at 600°C, due to an unusual increase of lithium mobility. © 2006 American Chemical Society.
Filiaciones:
Mosqueda H.A.:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, CU, Circuito exterior s/n, Del. Coyoacan, 04510, Mexico D.F., Mexico
Vazquez C.:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, CU, Circuito exterior s/n, Del. Coyoacan, 04510, Mexico D.F., Mexico
Bosch P.:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, CU, Circuito exterior s/n, Del. Coyoacan, 04510, Mexico D.F., Mexico
Pfeiffer H.:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, CU, Circuito exterior s/n, Del. Coyoacan, 04510, Mexico D.F., Mexico
|