Bodenstein's quasi-stationarity principle

The Bodenstein quasi-stationarity principle (according to Max Bodenstein ; also Bodenstein's quasi-stationarity hypothesis , quasi-stationarity condition or just quasi-stationarity ) is an approximation for a chemical reaction via a reactive intermediate .

If the intermediate product arises slowly with the rate constant and the end product develops quickly with the rate constant , it can be assumed that the concentration of the intermediate product does not change. This condition is useful for solving systems of kinetic differential equations because one variable can be eliminated. The approximation is only valid when the system is in kinetic equilibrium. ${\displaystyle k_{1}}$ ${\displaystyle k_{2}}$

literature

• Jürgen Warnatz, Ulrich Maas, Robert W. Dibble: Combustion: Physico-chemical principles, modeling and simulation. 3rd, act. and exp. Edition. Springer, Berlin et al. 2001, ISBN 3-540-42128-9 .

Web link

• Quasi-stationary. in Chemgapedia