A kinetic analysis of the partial oxidation of C3H8 over a 2% Rh/Al2O3 catalyst in annular microreactor
作者： Davide Pagani , Dario Livio , Alessandro Donazzi , Alessandra Beretta , Gianpiero Groppi
DOI: 10.1016/J.CATTOD.2012.09.004
关键词:
摘要: Abstract In this paper, we report a detailed kinetic investigation of C3H8 catalytic partial oxidation (CPO) over Rh/α-Al2O3 catalyst. We applied an isothermal microreactor to collect kinetically relevant data with the aim identifying prevalent dependences and extending our C1 molecular scheme description CPO process. The study consisted steam reforming tests diluted feeding mixtures in wide range temperature, composition space velocity. experimental results showed that H2 CO are formed through consecutive steps total fuel. syngas is also affected by water gas shift reaction, as well methanation COx. analogy CH4 CPO, rate were found be proportional concentration fuel, but independent from co-reactant. forward reaction was first order dependent on H2O CO, while assumed pressure. A preliminary micro-kinetic analysis adsorption likely involves formation CHx intermediates x ≤ 2.
core.ac.uk
sci-hub.se 参考文章(42)
Alessandro Donazzi, Dario Livio, Alessandra Beretta, Gianpiero Groppi, Pio Forzatti, Surface temperature profiles in CH4 CPO over honeycomb supported Rh catalyst probed with in situ optical pyrometer Applied Catalysis A-general. ,vol. 402, pp. 41- 49 ,(2011) , 10.1016/J.APCATA.2011.05.022
Alessandra Beretta, Tiziana Bruno, Gianpiero Groppi, Ivan Tavazzi, Pio Forzatti, Conditioning of Rh/α-Al2O3 catalysts for H2 production via CH4 partial oxidation at high space velocity Applied Catalysis B-environmental. ,vol. 70, pp. 515- 524 ,(2007) , 10.1016/J.APCATB.2006.01.014
R UNDERWOOD, The CO/H2 reaction over nickel-alumina studied by the transient method Journal of Catalysis. ,vol. 86, pp. 245- 253 ,(1984) , 10.1016/0021-9517(84)90370-1
A DONAZZI, A BERETTA, G GROPPI, P FORZATTI, Catalytic partial oxidation of methane over a 4% Rh/α-Al2O3 catalyst Part II: Role of CO2 reforming Journal of Catalysis. ,vol. 255, pp. 259- 268 ,(2008) , 10.1016/J.JCAT.2008.02.010
L. Maier, M. Hartmann, S. Tischer, O. Deutschmann, Interaction of heterogeneous and homogeneous kinetics with mass and heat transfer in catalytic reforming of logistic fuels Combustion and Flame. ,vol. 158, pp. 796- 808 ,(2011) , 10.1016/J.COMBUSTFLAME.2010.11.004
Matteo Maestri, Dionisios G. Vlachos, Alessandra Beretta, Gianpiero Groppi, Enrico Tronconi, A C1 microkinetic model for methane conversion to syngas on Rh/Al2O3 Aiche Journal. ,vol. 55, pp. 993- 1008 ,(2009) , 10.1002/AIC.11767
M. Hartmann, L. Maier, H.D. Minh, O. Deutschmann, Catalytic partial oxidation of iso-octane over rhodium catalysts: An experimental, modeling, and simulation study Combustion and Flame. ,vol. 157, pp. 1771- 1782 ,(2010) , 10.1016/J.COMBUSTFLAME.2010.03.005
R. Subramanian, G.J. Panuccio, J.J. Krummenacher, I.C. Lee, L.D. Schmidt, Catalytic partial oxidation of higher hydrocarbons: reactivities and selectivities of mixtures Chemical Engineering Science. ,vol. 59, pp. 5501- 5507 ,(2004) , 10.1016/J.CES.2004.09.012
Jakob J Krummenacher, Kevin N West, Lanny D Schmidt, Catalytic partial oxidation of higher hydrocarbons at millisecond contact times: decane, hexadecane, and diesel fuel Journal of Catalysis. ,vol. 215, pp. 332- 343 ,(2003) , 10.1016/S0021-9517(03)00011-3
Alessandra Beretta, Alessandro Donazzi, Dario Livio, Matteo Maestri, Gianpiero Groppi, Enrico Tronconi, Pio Forzatti, Optimal design of a CH4 CPO-reformer with honeycomb catalyst: Combined effect of catalyst load and channel size on the surface temperature profile Catalysis Today. ,vol. 171, pp. 79- 83 ,(2011) , 10.1016/J.CATTOD.2011.03.081