Consider the following sequence of steps to describe the high-temperature kinetics of NO reduction by CH4 on La2O3 and Sr = La2O3 in the absence of O2:
(a) Provide any necessary stoichiometric coefficient for each step to balance the overall reaction, i.e., no active centers are contained in the overall stoichiometry;
(b) Derive a kinetic rate expression from this sequence assuming NO* and CH2* are the only two significant surface species;
(c) Does the final rate expression have the capability of fitting the rate data reported in the paper by Vannice et al. [4], which gave reaction orders of 0.19–0.26 for CH4 and 0.73–0.98 for NO? Why?