Dear Ajaya according to the fact that pseudo second order kinetic model is based on π-π interactions, the adsorption energy can have any value.

You must calculate other parameters such as thermodynamic or equilibrium studies

Certainly there is no relationship between the so-called PSO, i.e. hyperbolic function and adsorption mechanism. As for the activation energy, it should be remembered that this quantity only makes sense for elementary processes. Equilibrium adsorption is not an elementary process. There are two opposite phenomena.

Actually referee asked according to activation energy (less than 20kj/mol),and reaction followed pseudo second order kinetics - we concluded it is chemisorption but referee raised the question and said both sentences are not compatible.

So how I can satisfy the refeee.

Regards

AKS

Ajaya Kumar Singh, In the review of my last work, the reviewer asked me to interpret the obtained activation energy values relating them to the speed of the chemical reactions tested. I wrote that there was no such relationship and fortunately he accepted my explanation. However, if the reviewer persists, you won't do much. In the case of adsorption, many believe that the compliance of the so-called PSO with kinetic data indicates chemisorption. This information first appeared in the publication of Ho and McKay (1999). It is now known that this is not true, but many still believe it.

THANK YOU VERY MUCH, PROFESSOR MIROSLAW.

REGARDS

AKS