INVESTIGADORES
AMADEO Norma Elvira
artículos
Título:
Thermodynamic analysis of ethanol/water system with the stoichiometric method
Autor/es:
V. MAS, R. KIPREOS, N. AMADEO,M. LABORDE
Revista:
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Editorial:
Elsevier
Referencias:
Lugar: Amsterdam; Año: 2006 vol. 31 p. 21 - 28
ISSN:
0360-3199
Resumen:
An analysis of the chemical equilibrium of ethanol/water system, using the stoichiometric method, has been performed.Intermediate compounds and coke formation are analyzed.Ethanol is completely converted to ethylene and/or acetaldehyde. Taking into account the equilibrium constant values offormation and transformation reactions of ethylene and acetaldehyde, both compounds are intermediates in this system.Due to the relevance of carbon monoxide if hydrogen is used as feed of a PEM-type fuel cell, CO concentration in theequilibrium mixture was studied assuming two different scenarios: (a) CO as primary product and (b) CO2 as primary product.These two scenarios lead to suggest different routes for reaching the equilibrium. Thus, the results obtained in this work mighthelp to interpret the experimental results far away from the equilibrium with the aim of elucidating the reaction mechanism.The knowledge of this mechanism is essential in order to minimize the CO formation.The thermodynamic feasibility of coke formation shown in a temperature vs. water/ethanol molar ratio has also beenanalyzed. The results indicate that if moderate temperatures are used, a molar ratio higher than 3 is required to avoid cokeformation.
