New cuprous adsorbent prepared by a bioreduction method for SO2 removal at low temperature / Lishan Jia ; Hao Song ; Qingbiao Li ; Weiping Fang in Industrial & engineering chemistry research, Vol. 47 n°22 (Novembre 2008)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p. 8888–8893 Titre : New cuprous adsorbent prepared by a bioreduction method for SO2 removal at low temperature Type de document : texte imprimé Auteurs : Lishan Jia, Auteur ; Hao Song, Auteur ; Qingbiao Li, Auteur ; Weiping Fang, Auteur Année de publication : 2008 Article en page(s) : p. 8888–8893 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Bioreduction Method SO2 Résumé : A new cuprous adsorbent was prepared by bioreduction method with biomass R08 and its desulfurization ability and regenerative property at low temperature were studied. The results indicated that the amount of SO2 adsorbed on the adsorbent was lower than that on Cu/γ-Al2O3 prepared by chemical method at low temperature; however, it can be easily regenerated and the regenerative adsorbent still has a good SO2 adsorption ability, higher than 87% of that in fresh adsorbent after six regenerations. XPS and FTIR analysis showed that biomass can reduce Cu2+ to Cu+ by aldose and keep the valence of copper exposed to O2 and H2O atmosphere. Furthermore, SO2 is adsorbed on the sorbent with chemical complexation bonds so that it can be desorbed by increasing temperature which is different from γ-Al2O3, Cu(II)/γ-Al2O3 and Cu(I)/γ-Al2O3 that sulfate species are formed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800059z [article] New cuprous adsorbent prepared by a bioreduction method for SO2 removal at low temperature [texte imprimé] / Lishan Jia, Auteur ; Hao Song, Auteur ; Qingbiao Li, Auteur ; Weiping Fang, Auteur . - 2008 . - p. 8888–8893. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p. 8888–8893 Mots-clés : Bioreduction Method SO2 Résumé : A new cuprous adsorbent was prepared by bioreduction method with biomass R08 and its desulfurization ability and regenerative property at low temperature were studied. The results indicated that the amount of SO2 adsorbed on the adsorbent was lower than that on Cu/γ-Al2O3 prepared by chemical method at low temperature; however, it can be easily regenerated and the regenerative adsorbent still has a good SO2 adsorption ability, higher than 87% of that in fresh adsorbent after six regenerations. XPS and FTIR analysis showed that biomass can reduce Cu2+ to Cu+ by aldose and keep the valence of copper exposed to O2 and H2O atmosphere. Furthermore, SO2 is adsorbed on the sorbent with chemical complexation bonds so that it can be desorbed by increasing temperature which is different from γ-Al2O3, Cu(II)/γ-Al2O3 and Cu(I)/γ-Al2O3 that sulfate species are formed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800059z

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