SURFACE MECHANISM OF HYDROGEN OXIDATION OVER RHODIUM *********************************************************************** **** * **** H2/O2 OVER RH - SURFASE MECHANISM * **** thermodynamically constant (273 - 1273K) * **** * **** C. Karakaya, O. Deutschmann * **** KIT (Karlsruhe Institute of Technology) * **** * **** * **** References: * **** C. Karakaya, O. Deutschmann, Chemical Engineering Science, * **** 89 (2012) 171-184 * **** 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 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 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 END