Modelling Cubic Autocatalysis by Successive Bimolecular Steps

Abstract— The simplest, chemically and thermodynamically satisfactory model of oscillatory behaviour involves only two variables but requires a third-order step: (1) A + B → 3B (2) B → C If the third-order step is replaced by consecutive second-order reactions (3, −3) A+B ⇒ X (4) X+B → 3B then a 3-variable scheme is produced .