Abstract
To study the behavior of complex chemical reactions, we need special arrangements to reduce their complexity. The complexity of the reaction mechanism is reduced by splitting down it into different reaction completion routes. Mathematically, we analyze the reaction routes, key/non-key components, Horiuti numbers and dependent/independent reaction steps in each reaction route. Moreover, we apply the modern model reduction techniques (MRT) to get the slow invariant manifold (SIM) for both reaction routes. Further, the Method of Invariant Grid (MIG) is applied to refine the approximated solution curves. For a case study the behavior of the 'carbon monoxide oxidation over platinum' is summarized in the form of the two (different) available routes to get rid of stiffness as well as complexity in the system. (C) 2019 Published by Elsevier B.V.