catcycle Paul Cochrane An example of a catalytic cycle of reactions. Adapted for xmds from "Mathematica computer programs for physical chemistry", William H. Cropper, Springer Verlag (1998) Reactions are: A + X -> R + Y B + Y -> S + X where the intermediates X and Y are catalysts, so the reaction catalysed is A + B -> R + S Equations are: d[A]_dt = -k1[A][X] d[B]_dt = k2[B][Y] d[X]_dt = -k1[A][X] + k2[B][Y] d[Y]_dt = k1[A][X] - k2[B][Y] t yes yes yes yes main 1 main double A B X Y RK4IP 1000 100000 1000 main Aout Bout Xout Yout