Partial oxidation of n-hexadecane at short contact times: Catalyst and washcoat loading and catalyst morphology

Degenstein, Nick J.; Subramanian, Ramanathan; Schmidt, L.D.

doi:10.1016/j.apcata.2006.02.060

Cited by 56 publications

(38 citation statements)

References 31 publications

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“…The catalysts were prepared by the dropwise addition of the aqueous metal salt solution (Rh(NO 3 ) 3 or H 2 PtCl 6 ) onto the alumina support, drying in air, and calcining in a closed oven at 6008C for 5 h. The 80 ppi supports were also coated with a 5 wt % g-Al 2 O 3 washcoat to roughen the surface and enhance metal dispersion. 12 Four different catalysts were studied in this work: 80 ppi 5% Rh (or Pt) with 5% washcoat and 45 ppi 5% Rh (or Pt) with no washcoat.…”

Section: Methodsmentioning

confidence: 99%

“…The first step in successfully designing a process for a fuel that is a complicated mixture is to understand how the components of that mixture behave separately. To this end, a wide variety of fuels have been reacted in CPO reactors including normal alkanes ranging from methane to n-hexadecane, [3][4][5][6][7][8][9][10][11][12] branched alkanes such as i-butane and i-octane, 10,13,14 and cyclic fuels such as cyclohexane. 9,14 Results show that each of these different classes of compounds behaves differently in the CPO system.…”

Section: Introductionmentioning

confidence: 99%

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A comparison of the catalytic partial oxidation of C₁ to C₁₆ normal paraffins

2006

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in Wiley InterScience (www.interscience.wiley.com).The catalytic partial oxidation (CPO) of C 1 through C 16 normal alkanes is examined on Pt and Rh-coated a-Al 2 O 3 ceramic foam supports. New data for heavy liquid fuels ( C 6 ) are combined with previously reported data for lighter hydrocarbons to explore the effects of reactant fuel molecular weight, catalyst metal, and support structure on the CPO of normal paraffins. These results show that, independent of catalyst metal and support geometry, fuel conversion and the total selectivity to olefin products increase with increasing chain length of the reacting fuel. Conversely, the selectivities of H 2 and CO decrease with increasing molecular weight of the reacting fuel. Pt catalysts generate higher selectivities to ethylene and other olefins than Rh catalysts, but Rh is the better catalyst for synthesis gas (H 2 þ CO) production. Catalyst supports with lower internal surface area to volume ratio produce lower selectivities of H 2 and CO and higher selectivities of H 2 O, ethylene, and other olefins than high surface area to volume catalysts.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A comparison of the catalytic partial oxidation of C₁ to C₁₆ normal paraffins

2006

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“…Since biodiesel is a mixture of various long-chain ester compounds, an average number of carbon atoms per molecule, over the mixture was used to calculate a CIO feed ratio. [20].…”

Section: Comparison To Biodiesel Resultsmentioning

confidence: 99%

“…The reactant used can be an alkane (methane, ethane, propane, n-butane, n-hexane, n-octane, decane, nhexadecane) [7,17,18,[20][21][22][23][24][25][26][27][28][29] , an alcohol (methanol, ethanol, 1-propanol, 2-propanol. .. ) [9,[30][31][32][33], or more complex organic compounds such as biodiesel [34].…”

Section: Catalytic Partial Oxidationmentioning

confidence: 99%

Catalytic partial oxidation of methyl acetate as a model to investigate the conversion of methyl esters to hydrogen

Nguyen¹,

Leclerc²

2008

International Journal of Hydrogen Energy

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“…Die Bereitstellung von Wasserstoff und Synthesegas (H 2 , CO) aus verfügbaren Energieträ-gern wie Benzin oder Diesel durch katalytische Partialoxidation (CPOX) und Wasserdampfreformierung (SR) steht gegenwärtig sowohl im Fokus akademischer als auch industrieller Forschung [1][2][3][4]. Die genannten Reaktionen ermöglichen den Einsatz effizienter Stromerzeuger wie Brennstoffzellen (H 2 für PEM-FC bzw.…”

Section: Introductionunclassified

Experimentelle Untersuchung der katalytischen Partialoxidation von Modellkraftstoffen unter definierten Randbedingungen

Hartmann

Deutschmann

Lichtenberg

et al. 2009

Chemie Ingenieur Technik

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Mit Rhodium beschichtete Katalysatoren ermöglichen durch katalytische Partialoxidation (CPOX) die Darstellung großer Mengen Wasserstoff aus höheren Kohlenwasserstoffen wie Benzin oder Diesel innerhalb weniger Millisekunden Kontaktzeit. Die Reaktionsenthalpie erzeugt Temperaturen von bis zu 1300 °C und erlaubt den autothermen Betrieb von kompakten CPOX Reaktoren in Fahrzeugen, die einen neuen Weg zur Versorgung von APUs (auxiliary power unit) mit Wasserstoff bzw. Synthesegas aus bereits bestehenden Versorgungsnetzen aufzeigen. Zur Evaluierung von Modellen und der Aufklärung wichtiger Einzelprozesse der Reaktion wurde eine Versuchsanlage entwickelt, an der die katalytische Partialoxidation von Modellkraftstoffen unter definierten Randbedingungen erforscht werden kann. Dabei realisiert die Verwendung kombinierter Messverfahren (Prozess‐Infrarot‐Spektrometerie, Sektorfeld‐Massenspektrometerie, paramagnetische Sauerstoffdetektion) die zeitaufgelöste Untersuchung der Reaktionsprodukte mit geschlossenen Bilanzen bei allen technisch relevanten Betriebspunkten. Eine detaillierte Analyse der Kohlenwasserstoffe erfolgt mit Hilfe eines Gaschromatographen. Beispielhaft werden Selektivität und Umsatz für die CPOX von i‐Oktan im stationären wie instationären Betrieb diskutiert.

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Partial oxidation of n-hexadecane at short contact times: Catalyst and washcoat loading and catalyst morphology

Cited by 56 publications

References 31 publications

A comparison of the catalytic partial oxidation of C₁ to C₁₆ normal paraffins

A comparison of the catalytic partial oxidation of C₁ to C₁₆ normal paraffins

Catalytic partial oxidation of methyl acetate as a model to investigate the conversion of methyl esters to hydrogen

Experimentelle Untersuchung der katalytischen Partialoxidation von Modellkraftstoffen unter definierten Randbedingungen

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Partial oxidation of n-hexadecane at short contact times: Catalyst and washcoat loading and catalyst morphology

Cited by 56 publications

References 31 publications

A comparison of the catalytic partial oxidation of C1 to C16 normal paraffins

A comparison of the catalytic partial oxidation of C1 to C16 normal paraffins

Catalytic partial oxidation of methyl acetate as a model to investigate the conversion of methyl esters to hydrogen

Experimentelle Untersuchung der katalytischen Partialoxidation von Modellkraftstoffen unter definierten Randbedingungen

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A comparison of the catalytic partial oxidation of C₁ to C₁₆ normal paraffins

A comparison of the catalytic partial oxidation of C₁ to C₁₆ normal paraffins