INFIQC 05475
INSTITUTO DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Unidad Ejecutora - UE
artículos
Título:
A new model for the prediction of oxygen interference in hydrogen storage systems
Autor/es:
SIGAL, A; VILLARREAL, MA; ROJAS, MI; LEIVA, EPM
Revista:
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2014 vol. 39 p. 5899 - 5905
ISSN:
0360-3199
Resumen:
A new model is developed to analyze oxygen interference in hydrogen storage materials. It is based on the competitive adsorption isotherm between the two gases, with the parameters fitted from molecular dynamic simulations. The model is applied to a system consisting of graphene sheets separated by different distances. For a gas-phase mixture of hydrogen (99.9%) and oxygen (0.1%) in interaction with porous graphite of 6.5 Å (optimum size) it can be observed that after 50 cycles of charging/discharging the blocking of active sites of the material by oxygen is ~10%, due to progressive pollution of the system by oxygen. The model presented here may easily be extended to other systems of interest, involving other blocking species or adsorbent materials.
