SURFACE MECHANISM OF WATER-GAS SHIFT REACTION OVER RHODIUM *********************************************************************** **** * **** H2/CO/O2/CO2/H2O OVER RH - SURFASE MECHANISM * **** thermodynamically constant (273 - 1273K) * **** * **** C. Karakaya, L. Maier, O. Deutschmann * **** KIT (Karlsruhe Institute of Technology) * **** * **** * **** References: * **** C. Karakaya, R. Otterstätter, L. Maier, O. Deutschmann, * **** Applied Catalysis A: General, submitted (2013) * **** www.detchem.com/mechanisms * **** KIT (Karlsruhe Institute of Technology) * **** Contact: mail@detchem.com (O. Deutschmann) * **** www.detchem.com/mechanisms * **** * **** * **** Kinetic data: * **** k = A * T**b * exp (-Ea/RT) A b Ea * **** (cm,mol,s) - kJ/mol * **** * **** STICK: A in next reaction is initial sticking coefficient * **** * **** * **** (DETCHEM format) * **** * *********************************************************************** **** 1. ADSORPTION STICK H2 +Rh(s) +Rh(s) >H(s) +H(s) 0.03 0 0 STICK O2 +Rh(s) +Rh(s) >O(s) +O(s) 0.01 0 0 STICK H2O +Rh(s) >H2O(s) 0.1 0 0 STICK CO2 +Rh(s) >CO2(s) 0.048 0 0 STICK CO +Rh(s) >CO(s) 0.4971 0 0 H(s) +H(s) >Rh(s) +Rh(s) +H2 5.574E+19 0.239 59.691 O(s) +O(s) >Rh(s) +Rh(s) +O2 5.329E+22 -0.137 386.995 H2O(s) >H2O +Rh(s) 6.858E+14 -0.280 44.993 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 H(s) +O(s) >OH(s) +Rh(s) 8.826E+21 -0.048 73.365 OH(s) +Rh(s) >H(s) +O(s) 1.000E+21 0.045 48.041 OH(s) +H(s) >H2O(s) +Rh(s) 1.743E+22 -0.127 41.731 H2O(s) +Rh(s) >H(s) +OH(s) 5.408E+22 0.129 98.220 OH(s) +OH(s) >H2O(s) +O(s) 5.736E+20 -0.081 121.594 H2O(s) +O(s) >OH(s) +OH(s) 1.570E+22 0.081 203.407 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 CO(s) +OH(s) >COOH(s) +Rh(s) 2.922E+20 0 55.334 $CO(s) 0 47 COOH(s) +Rh(s) >CO(s) +OH(s) 2.738E+21 0 48.375 COOH(s) +Rh(s) >CO2(s) +H(s) 1.165E+19 0.160 5.610 CO2(s) +H(s) >COOH(s) +Rh(s) 1.160E+20 -0.160 14.480 COOH(s) +H(s) >CO(s) +H2O(s) 5.999E+19 -0.188 33.552 CO(s) +H2O(s) >COOH(s) +H(s) 2.258E+19 0.051 97.078 $CO(s) 0 47 CO(s) +OH(s) >CO2(s) +H(s) 3.070E+19 0 82.938 $CO(s) 0 47 CO2(s) +H(s) >CO(s) +OH(s) 2.504E+21 -0.301 84.767 C(s) +OH(s) >H(s) +CO(s) 4.221E+20 0.078 30.038 $C(s) 0 120 H(s) +CO(s) >C(s) +OH(s) 3.244E+21 -0.078 138.262 $CO(s) 0 47 END