Catalytic oxidation of carbon monoxide over rhodium
CO
Evaluated by comparison between simulations and steady-state experiments in stagnation-point reactor over Rh/Al2O3 catalyst at 521 - 873K; light-off measurements of CO/O2mixtures in continuous-flow reactor (300 - 525K). Surface kinetics is thermodynamically consistent for a temperature range 273 - 1273K
H. Karadeniz, C. Karakaya, S. Tischer, O. Deutschmann, Numerical Modeling of Stagnation-flows on Porous Catalytic Surfaces: CO Oxidation on Rh/Al2O3, Chemical Engineering Science, 117(2014)136
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SURFACE MECHANISM OF CO OXIDATION OVER RHODIUM
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**** CO/O2 OVER RH - SURFASE MECHANISM *
**** thermodynamically constant (273 - 1273K) *
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**** C. Karakaya, O. Deutschmann 2013 *
**** KIT (Karlsruhe Institute of Technology) *
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**** References: *
**** H. Karadeniz, C. Karakaya, S. Tischer, O. Deutschmann, *
**** Chemical Engineering Science, Submitted (2013). *
**** www.detchem.com/mechanisms *
**** KIT (Karlsruhe Institute of Technology) *
**** Contact: [email protected] (O. Deutschmann) *
**** www.detchem.com/mechanisms *
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**** Kinetic data: *
**** k = A * T**b * exp (-Ea/RT) A b Ea *
**** (cm,mol,s) - kJ/mol *
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**** STICK: A in next reaction is initial sticking coefficient *
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**** (DETCHEM format) *
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**** 1. ADSORPTION
STICK
O2 +Rh(s) +Rh(s) >O(s) +O(s) 0.01 0 0
STICK
CO2 +Rh(s) >CO2(s) 0.048 0 0
STICK
CO +Rh(s) >CO(s) 0.4971 0 0
O(s) +O(s) >Rh(s) +Rh(s) +O2 5.329E+22 -0.137 386.995
CO(s) >CO +Rh(s) 1.300E+13 0.295 134.070
$CO(s) 0 47
CO2(s) >CO2 +Rh(s) 3.920E+11 0.315 20.505
C(s) +O(s) >CO(s) +Rh(s) 1.173E+22 0.000 92.142
CO(s) +Rh(s) >C(s) +O(s) 6.390E+21 -0.000 174.758
$CO(s) 0 47
CO(s) +O(s) >CO2(s) +Rh(s) 6.183E+21 0.034 129.982
$CO(s) 0 47
CO2(s) +Rh(s) >CO(s) +O(s) 5.752E+22 -0.175 106.492
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