Do ALL catalysts increase A?

[Sid Panda 3A]

All catalysts decrease the Activation energy. But, do ALL catalysts increase the pre-exponential factor (A) as well? In lecture, Dr. Lavelle gave the example of an enzyme binding to an active site as an example of a biological catalyst increasing A. I wasn't sure if it only applied to enzymes.

[IsaacLaw1E]

Only the enzymes do, because they have the sites that bind to the reactants to move them around. Normal catalysts like NO from the ozone example can't really do that.

[Zechuan Rao 1K]

Depends on the specific reaction. But what catalyst does is provide a more stable transition state. This means the slow step is likely to also have less activation energy than if without catalyst. So I guess, the catalyst doesn't alter A, because the reaction of concern would be different between with and without catalyst.

[Ella Henrickson 3I]

I think the only thing that ALL catalysts do is lower the activation energy by presenting a new pathway. That pathway could be a variety of things, such as increasing A.