2 replies to this topic

[Gatsavida]

Hello everyone,

 

I'm a chemical engineering student and I am having trouble solving example questions on my chemical reaction engineering module about catalyst deactivation. Would really appreciate the help if anyone could explain how to solve the following question. Thank you

 

The reaction 2A → B is second-order liquid-phase, catalysed, of rate rm = kAm[A] . The products tends to degrade (B → C) and produces coke on the surface of the catalyst, leading to series deactivation of rate

 

r_f ≡1/A_m*[dA_m]/dt = k_f [B]

 

a) Find the steady state concentrations of [A] and [B] from the (note that it is quasi-steady; ignore the amount of B consumed by the second reaction).

 Find Am(t) if [B] changes with time.
c) Design a schedule for the flow rate v that keeps [A] and [B] steady.

 

[latexman]

Sorry, we do not do your homework.  What textbook are you using?

[breizh]

Hi,

Better to define the terms in the query.

Probably a good start would be to show us your work and tell us your difficulties.

We are happy to support you but don't expect us to do your homework.

https://www.google.c...1sOjtS7Evk,st:0

Check this link above /scroll down in the link (module 1 lectures 11,12  catalyst deactivation) NPTEL. Nice presentation of the problem on Youtube.

Good luck.

Breizh