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Thermally driven copper oxide redox cycle for the separation of oxygen from gases / M. Hanchen in Industrial & engineering chemistry research, Vol. 51 N° 20 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 20 (Mai 2012) . - pp. 7013–7021 Titre : Thermally driven copper oxide redox cycle for the separation of oxygen from gases Type de document : texte imprimé Auteurs : M. Hanchen, Auteur ; A. Stiel, Auteur ; Z. R. Jovanovic, Auteur Année de publication : 2012 Article en page(s) : pp. 7013–7021 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Copper  Oxide  Separation  oxygen  gases Résumé : The copper(I) oxide (Cu2O)/copper(II) oxide (CuO) redox thermochemical cycle is thermodynamically and experimentally examined as means for removal of oxygen from dilute gas streams. The thermal energy required for removal of oxygen from a 1% O2–Ar gas mixture is estimated to range from 545 to 2121 kJ/mol O2. Temperatures as high as 1350 K imposed by this thermochemical cycle offer potential for using concentrated solar energy as the source of process heat. The kinetics of the redox reactions and their cycle-to-cycle repeatability were investigated by thermogravimetry. Laboratory scale packed bed reactor tests have pointed out the bulk shrinking of the packing during the initial high temperature cycles as a cause of gas bypassing that may have adverse effects on the reactor contacting efficiency. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202474s [article] Thermally driven copper oxide redox cycle for the separation of oxygen from gases [texte imprimé] / M. Hanchen, Auteur ; A. Stiel, Auteur ; Z. R. Jovanovic, Auteur . - 2012 . - pp. 7013–7021. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 20 (Mai 2012) . - pp. 7013–7021 Mots-clés : Copper  Oxide  Separation  oxygen  gases Résumé : The copper(I) oxide (Cu2O)/copper(II) oxide (CuO) redox thermochemical cycle is thermodynamically and experimentally examined as means for removal of oxygen from dilute gas streams. The thermal energy required for removal of oxygen from a 1% O2–Ar gas mixture is estimated to range from 545 to 2121 kJ/mol O2. Temperatures as high as 1350 K imposed by this thermochemical cycle offer potential for using concentrated solar energy as the source of process heat. The kinetics of the redox reactions and their cycle-to-cycle repeatability were investigated by thermogravimetry. Laboratory scale packed bed reactor tests have pointed out the bulk shrinking of the packing during the initial high temperature cycles as a cause of gas bypassing that may have adverse effects on the reactor contacting efficiency. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202474s