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Formation of synthesis gas from propane oxidation over pt-on-ceria / Tapan K. Das in Industrial & engineering chemistry research, Vol. 48 N° 24 (Décembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10796–10802 Titre : Formation of synthesis gas from propane oxidation over pt-on-ceria : effect of ceria surface area, reaction temperature, and oxygen/fuel ratio Type de document : texte imprimé Auteurs : Tapan K. Das, Auteur ; Edwin L. Kugler, Auteur ; Dady B. Dadyburjor, Auteur Année de publication : 2010 Article en page(s) : pp. 10796–10802 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Formation--Synthesis--Gas--Propane--Oxidation--Pt-on-Ceria--Effect--Ceria--Surface  Area--Reaction--Temperature--Oxygen/Fuel  Ratio Résumé : The formation of synthesis gas from propane oxidation has been investigated on 1.0% Pt/CeO2 catalysts in a fixed-bed flow reactor over a temperature range of 200−800 °C at atmospheric pressure using ∼90% inert. Three kinds of ceria, with different surface areas, have been used as the catalytic support for this reaction. The catalysts were characterized using X-ray diffraction (XRD), temperature-programmed reduction (TPR), temperature-programmed oxidation (TPO), H2 chemisorption, and BET surface area. For the catalysts with the highest surface area, a large decrease in BET surface area has been observed after calcinations at high temperature. The oxidation of propane occurs with two sets of products. At low temperatures (T ≤ 500 °C), propane oxidizes exclusively into CO2 and H2O with little H2. Above 500 °C, O2 is completely consumed, and the selectivities of CO and H2 increase steadily with increase in temperature. In the region 500−700 °C, high-surface-area catalysts show higher activity and selectivity to H2 and CO than low-surface-area catalysts. Propane conversion at high temperatures (T ≥ 750 °C) is similar for all the catalysts. The effect of O2/C3H8 has also been investigated. Propane conversion and carbon dioxide selectivity increase, and H2 and CO selectivities decrease, with increase in the O2/C3H8 ratio. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900441d [article] Formation of synthesis gas from propane oxidation over pt-on-ceria : effect of ceria surface area, reaction temperature, and oxygen/fuel ratio [texte imprimé] / Tapan K. Das, Auteur ; Edwin L. Kugler, Auteur ; Dady B. Dadyburjor, Auteur . - 2010 . - pp. 10796–10802. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10796–10802 Mots-clés : Formation--Synthesis--Gas--Propane--Oxidation--Pt-on-Ceria--Effect--Ceria--Surface  Area--Reaction--Temperature--Oxygen/Fuel  Ratio Résumé : The formation of synthesis gas from propane oxidation has been investigated on 1.0% Pt/CeO2 catalysts in a fixed-bed flow reactor over a temperature range of 200−800 °C at atmospheric pressure using ∼90% inert. Three kinds of ceria, with different surface areas, have been used as the catalytic support for this reaction. The catalysts were characterized using X-ray diffraction (XRD), temperature-programmed reduction (TPR), temperature-programmed oxidation (TPO), H2 chemisorption, and BET surface area. For the catalysts with the highest surface area, a large decrease in BET surface area has been observed after calcinations at high temperature. The oxidation of propane occurs with two sets of products. At low temperatures (T ≤ 500 °C), propane oxidizes exclusively into CO2 and H2O with little H2. Above 500 °C, O2 is completely consumed, and the selectivities of CO and H2 increase steadily with increase in temperature. In the region 500−700 °C, high-surface-area catalysts show higher activity and selectivity to H2 and CO than low-surface-area catalysts. Propane conversion at high temperatures (T ≥ 750 °C) is similar for all the catalysts. The effect of O2/C3H8 has also been investigated. Propane conversion and carbon dioxide selectivity increase, and H2 and CO selectivities decrease, with increase in the O2/C3H8 ratio. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900441d

Formation of synthesis gas from propane oxidation over pt-on-ceria / Tapan K. Das in Industrial & engineering chemistry research, Vol. 48 N° 24 (Décembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10796–10802 Titre : Formation of synthesis gas from propane oxidation over pt-on-ceria : effect of ceria surface area, reaction temperature, and oxygen/fuel ratio Type de document : texte imprimé Auteurs : Tapan K. Das, Auteur ; Edwin L. Kugler, Auteur ; Dady B. Dadyburjor, Auteur Année de publication : 2010 Article en page(s) : pp. 10796–10802 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Synthesis  gas  Propane  oxidation  Ceria  surface  Temperature Résumé : The formation of synthesis gas from propane oxidation has been investigated on 1.0% Pt/CeO2 catalysts in a fixed-bed flow reactor over a temperature range of 200−800 °C at atmospheric pressure using ∼90% inert. Three kinds of ceria, with different surface areas, have been used as the catalytic support for this reaction. The catalysts were characterized using X-ray diffraction (XRD), temperature-programmed reduction (TPR), temperature-programmed oxidation (TPO), H2 chemisorption, and BET surface area. For the catalysts with the highest surface area, a large decrease in BET surface area has been observed after calcinations at high temperature. The oxidation of propane occurs with two sets of products. At low temperatures (T ≤ 500 °C), propane oxidizes exclusively into CO2 and H2O with little H2. Above 500 °C, O2 is completely consumed, and the selectivities of CO and H2 increase steadily with increase in temperature. In the region 500−700 °C, high-surface-area catalysts show higher activity and selectivity to H2 and CO than low-surface-area catalysts. Propane conversion at high temperatures (T ≥ 750 °C) is similar for all the catalysts. The effect of O2/C3H8 has also been investigated. Propane conversion and carbon dioxide selectivity increase, and H2 and CO selectivities decrease, with increase in the O2/C3H8 ratio. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900441d [article] Formation of synthesis gas from propane oxidation over pt-on-ceria : effect of ceria surface area, reaction temperature, and oxygen/fuel ratio [texte imprimé] / Tapan K. Das, Auteur ; Edwin L. Kugler, Auteur ; Dady B. Dadyburjor, Auteur . - 2010 . - pp. 10796–10802. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10796–10802 Mots-clés : Synthesis  gas  Propane  oxidation  Ceria  surface  Temperature Résumé : The formation of synthesis gas from propane oxidation has been investigated on 1.0% Pt/CeO2 catalysts in a fixed-bed flow reactor over a temperature range of 200−800 °C at atmospheric pressure using ∼90% inert. Three kinds of ceria, with different surface areas, have been used as the catalytic support for this reaction. The catalysts were characterized using X-ray diffraction (XRD), temperature-programmed reduction (TPR), temperature-programmed oxidation (TPO), H2 chemisorption, and BET surface area. For the catalysts with the highest surface area, a large decrease in BET surface area has been observed after calcinations at high temperature. The oxidation of propane occurs with two sets of products. At low temperatures (T ≤ 500 °C), propane oxidizes exclusively into CO2 and H2O with little H2. Above 500 °C, O2 is completely consumed, and the selectivities of CO and H2 increase steadily with increase in temperature. In the region 500−700 °C, high-surface-area catalysts show higher activity and selectivity to H2 and CO than low-surface-area catalysts. Propane conversion at high temperatures (T ≥ 750 °C) is similar for all the catalysts. The effect of O2/C3H8 has also been investigated. Propane conversion and carbon dioxide selectivity increase, and H2 and CO selectivities decrease, with increase in the O2/C3H8 ratio. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900441d