Propagation and interaction of cellular fronts in a closed system

We experimentally study the development of cellular acidity fronts during t he chlorite oxidation of tetrationate performed in a thin layer of viscous solution containing different amounts of polyelectrolyte. These properties and the interaction between fronts are investigated as a function of initia l chemical concentrations. The observations are compared to numerical resul ts obtained with a skeleton kinetic model of the reaction using a two-dimen sional finite element integration scheme. The agreements with observations are striking.