Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: scientizscht on 18/11/2019 21:30:55

Title: How can the minimum diffusion coefficient be calculated regarding a reaction?
Post by: scientizscht on 18/11/2019 21:30:55
Hello

Let's say we immerse a particle of catalyst in a solution of a reactant.

As the catalyst converts the reactant, it creates a concentration gradient around the particle that is replenished.

How can I calculate the minimum diffusion coefficient so that the reaction is not inhibited from inadequate replenishment of the reactant around the catalyst?

Thanks!
Title: Re: How can the minimum diffusion coefficient be calculated regarding a reaction?
Post by: Bored chemist on 18/11/2019 21:35:43
It is going to vary with the catalyst, the particle size, teh temperature, the concentration and probably other things too.

The actual answer to your question, as asked
"How can I calculate the minimum diffusion coefficient"
is learn physical chemistry.
Title: Re: How can the minimum diffusion coefficient be calculated regarding a reaction?
Post by: evan_au on 19/11/2019 04:42:31
...or you could just stir the mixture, and not rely on passive diffusion.