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Production of synthesis gas from methane using lattice oxygen of NiO−Cr2O3−MgO complex oxide / Nakayama, O. in Industrial & engineering chemistry research, Vol. 49 N° 2 (Janvier 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 526–534 Titre : Production of synthesis gas from methane using lattice oxygen of NiO−Cr2O3−MgO complex oxide Type de document : texte imprimé Auteurs : Nakayama, O., Auteur ; Ikenaga, N., Auteur ; Miyake, T., Auteur Année de publication : 2010 Article en page(s) : pp 526–534 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Gas  Methane  Lattice  oxygen  NiO−Cr2O3−MgO  Complex  Oxide. Résumé : To produce nitrogen-free synthesis gas or hydrogen by the partial oxidation of methane using air as an oxidant, NiO−Cr2O3−MgO complex oxide was proposed as an effective one. Lattice oxygen of NiO in the complex oxide was effectively transferred to CH4 to give H2 and CO in the ratio of 2−3:1 at 700 °C. NiO was reduced to metallic Ni during the course of the reaction with CH4, and the reduced Ni was successfully oxidized to NiO with air at 700 °C. Repeated cycles of the reaction and oxidation were carried out without any loss of activity. The role of Cr2O3 seemed to weaken the Ni−O bond in NiO−MgO complex oxide, in which NiO is less reducible with CH4 at 700 °C. In addition, the surface oxidation state of Ni was increased to Ni3+ with Cr2O3. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9013474 [article] Production of synthesis gas from methane using lattice oxygen of NiO−Cr2O3−MgO complex oxide [texte imprimé] / Nakayama, O., Auteur ; Ikenaga, N., Auteur ; Miyake, T., Auteur . - 2010 . - pp 526–534. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 526–534 Mots-clés : Gas  Methane  Lattice  oxygen  NiO−Cr2O3−MgO  Complex  Oxide. Résumé : To produce nitrogen-free synthesis gas or hydrogen by the partial oxidation of methane using air as an oxidant, NiO−Cr2O3−MgO complex oxide was proposed as an effective one. Lattice oxygen of NiO in the complex oxide was effectively transferred to CH4 to give H2 and CO in the ratio of 2−3:1 at 700 °C. NiO was reduced to metallic Ni during the course of the reaction with CH4, and the reduced Ni was successfully oxidized to NiO with air at 700 °C. Repeated cycles of the reaction and oxidation were carried out without any loss of activity. The role of Cr2O3 seemed to weaken the Ni−O bond in NiO−MgO complex oxide, in which NiO is less reducible with CH4 at 700 °C. In addition, the surface oxidation state of Ni was increased to Ni3+ with Cr2O3. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9013474