Documents disponibles écrits par cet auteur

Catalytic gasification of glucose over Ni/activated charcoal in supercritical water / In-Gu Lee in Industrial & engineering chemistry research, Vol. 48 N°3 (Février 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1435–1442 Titre : Catalytic gasification of glucose over Ni/activated charcoal in supercritical water Type de document : texte imprimé Auteurs : In-Gu Lee, Auteur ; Son-Ki Ihm, Auteur Année de publication : 2009 Article en page(s) : p. 1435–1442 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Glucose  --  Catalytic  gasification  Ni/Activated  Charcoal Résumé : Gasification of glucose was carried out over the 16 wt % Ni/activated charcoal in supercritical water at 28 MPa. Effects of temperature (575−725 °C), feed concentration (0.3−0.9 M), and LHSV (6−24 h−1) were investigated on the product distribution. For comparison, the gasification experiments were performed with activated charcoal and also without catalyst. While the Ni/activated charcoal catalyst showed a good yield of hydrogen, it was deactivated due to coke deposition especially at low temperatures below 650 °C and also due to sintering of nickel particles. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8012456 [article] Catalytic gasification of glucose over Ni/activated charcoal in supercritical water [texte imprimé] / In-Gu Lee, Auteur ; Son-Ki Ihm, Auteur . - 2009 . - p. 1435–1442. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1435–1442 Mots-clés : Glucose  --  Catalytic  gasification  Ni/Activated  Charcoal Résumé : Gasification of glucose was carried out over the 16 wt % Ni/activated charcoal in supercritical water at 28 MPa. Effects of temperature (575−725 °C), feed concentration (0.3−0.9 M), and LHSV (6−24 h−1) were investigated on the product distribution. For comparison, the gasification experiments were performed with activated charcoal and also without catalyst. While the Ni/activated charcoal catalyst showed a good yield of hydrogen, it was deactivated due to coke deposition especially at low temperatures below 650 °C and also due to sintering of nickel particles. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8012456

Hydrogen production by SCWG treatment of wastewater from amino acid production process / In-Gu Lee in Industrial & engineering chemistry research, Vol. 49 N° 21 (Novembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 21 (Novembre 2010) . - pp. 10974-10980 Titre : Hydrogen production by SCWG treatment of wastewater from amino acid production process Type de document : texte imprimé Auteurs : In-Gu Lee, Auteur ; Son-Ki Ihm, Auteur Année de publication : 2011 Article en page(s) : pp. 10974-10980 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Manufacturing  process  Waste  water  Hydrogen  production Résumé : The organic wastewater obtained from an amino acid production process was treated by supercritical water gasification (SCWG) method for achieving water purification and hydrogen production. A set of SCWG experiments was also carried out with glucose and valine solutions as model compounds for reducing sugars and amino acids present in the wastewater, respectively. The effect of temperature (600—700 °C) and different catalysts (activated charcoal (AC), Ni/AC, and Ni―Y/AC) on the extent of gasification and gas composition was investigated in a continuous-flow reactor at 28 MPa and 12 h―1 LHSV. Complete gasification of organic compounds in the wastewater was achieved in the presence of the supported nickel catalysts, resulting in the formation of gaseous products with high hydrogen contents. Alkaline salts present in the wastewater feed contributed to hydrogen formation reactions. Solid product formed during the SCWGs of the wastewater feed was identified as one of main obstacles for a possible commercial design and a schematic concept was suggested for its removal. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23447991 [article] Hydrogen production by SCWG treatment of wastewater from amino acid production process [texte imprimé] / In-Gu Lee, Auteur ; Son-Ki Ihm, Auteur . - 2011 . - pp. 10974-10980. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 21 (Novembre 2010) . - pp. 10974-10980 Mots-clés : Manufacturing  process  Waste  water  Hydrogen  production Résumé : The organic wastewater obtained from an amino acid production process was treated by supercritical water gasification (SCWG) method for achieving water purification and hydrogen production. A set of SCWG experiments was also carried out with glucose and valine solutions as model compounds for reducing sugars and amino acids present in the wastewater, respectively. The effect of temperature (600—700 °C) and different catalysts (activated charcoal (AC), Ni/AC, and Ni―Y/AC) on the extent of gasification and gas composition was investigated in a continuous-flow reactor at 28 MPa and 12 h―1 LHSV. Complete gasification of organic compounds in the wastewater was achieved in the presence of the supported nickel catalysts, resulting in the formation of gaseous products with high hydrogen contents. Alkaline salts present in the wastewater feed contributed to hydrogen formation reactions. Solid product formed during the SCWGs of the wastewater feed was identified as one of main obstacles for a possible commercial design and a schematic concept was suggested for its removal. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23447991

Synthesis, characterization, and hydrodesulfurization activity of new mesoporous carbon supported transition metal sulfide catalysts / Murid Hussain in Industrial & engineering chemistry research, Vol. 48 N°2 (Janvier 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°2 (Janvier 2009) . - p. 698–707 Titre : Synthesis, characterization, and hydrodesulfurization activity of new mesoporous carbon supported transition metal sulfide catalysts Type de document : texte imprimé Auteurs : Murid Hussain, Auteur ; Son-Ki Ihm, Auteur Année de publication : 2009 Article en page(s) : p. 698–707 Note générale : chemical engenireeng Langues : Anglais (eng) Mots-clés : hydrodesulphurization Résumé : The potential of sulfided Mo, Co, and CoMo catalysts supported on two different carbon mesostructures by KAIST-1 and 3 (CMK-1 and 3) for hydrodesulphurization (HDS) of thiophene at specific conditions was explored to investigate the effect of different pore sizes, surface functional groups, metal dispersion, and presulfidation temperature. Co/CMK catalysts were superior to Mo/CMK catalysts on the basis of same metal loading. The synergistic effect was found at Co/Mo ratio of 5/5. Sulfidation on carbon supported catalysts was favored at lower temperature of 300 °C, whereas higher temperature of 400 and 500 °C showed a more favorable effect on alumina supported catalysts. CMK-3 supported CoMo catalysts were superior to all other catalysts due to larger pore size and higher acidic surface functional groups. CMK-3 oxidized with nitric acid showed even better performance for CoMo (5:5) supported catalysts since the increased surface functional groups might induce better dispersion leading to higher HDS activity. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801229y [article] Synthesis, characterization, and hydrodesulfurization activity of new mesoporous carbon supported transition metal sulfide catalysts [texte imprimé] / Murid Hussain, Auteur ; Son-Ki Ihm, Auteur . - 2009 . - p. 698–707. chemical engenireeng Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°2 (Janvier 2009) . - p. 698–707 Mots-clés : hydrodesulphurization Résumé : The potential of sulfided Mo, Co, and CoMo catalysts supported on two different carbon mesostructures by KAIST-1 and 3 (CMK-1 and 3) for hydrodesulphurization (HDS) of thiophene at specific conditions was explored to investigate the effect of different pore sizes, surface functional groups, metal dispersion, and presulfidation temperature. Co/CMK catalysts were superior to Mo/CMK catalysts on the basis of same metal loading. The synergistic effect was found at Co/Mo ratio of 5/5. Sulfidation on carbon supported catalysts was favored at lower temperature of 300 °C, whereas higher temperature of 400 and 500 °C showed a more favorable effect on alumina supported catalysts. CMK-3 supported CoMo catalysts were superior to all other catalysts due to larger pore size and higher acidic surface functional groups. CMK-3 oxidized with nitric acid showed even better performance for CoMo (5:5) supported catalysts since the increased surface functional groups might induce better dispersion leading to higher HDS activity. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801229y