In order to understand the cause of the temperature dependence of the reaction order difference between Ru and Ru+K (Fig. ), fitting was performed on results measured at 380~460℃ using Model II because Model II was shown to more accurately describe the reaction. Table shows the R 2 for the experimental values of the reaction order measurement at 460~380°C. The R 2 for step 3 of Ru, R 2 are all ≥ 0.98 , and the correlation between the rmodel and the rexp is very strong. For Ru, the R 2 values of step 7, 6, 5, 4, and 3 gradually approached 1 for all temperatures. Therefore, it can be said that the RDS for Ru remained unchanged at step 3 even when the temperature was changed.