CO oxidation on pt

porsche · March 8, 2018, 01:36

!!!Need help!!!
I am working on catalytic converter in fluent. I am modeling CO oxidation over platinum washcoat. So while modeling surface reaction I need to know whether I can just use single global reaction of CO oxidation: CO + 0.5O2 --> CO2
and specifying Pt as site species
( or)
should I use detailed global reaction with surface species :
CO + Pt -->CO(s)
O2 + Pt --> O(s)
O(s) + CO(s) --> CO2

Kummi · March 12, 2018, 03:33

Hello Porsche,
You need to implement detailed elementary surface reactions for CO oxidation on Pt surface site. Impose thermodynamic datas, Arrhenius parameters with surface site density to move on for your solution..

Good luck

porsche · March 12, 2018, 05:37

Hi #Kummi.
Thanks for your reply. I also would like to know whether can we input sticking coefficient in fluent for adsorption reactions.

Kummi · March 12, 2018, 06:40

Hello Porsche,
In Fluent, we cant input sticking coefficient value, however you can furnish initial surface coverage, coverage dependent reaction value and surface site density.

*Sticking coefficient can be inserted in surface elementary reactions alone

Thank you^^

March 8, 2018, 01:36	CO oxidation on pt	#1
porsche New Member harsh Join Date: Mar 2018 Posts: 2 Rep Power: 0	!!!Need help!!! I am working on catalytic converter in fluent. I am modeling CO oxidation over platinum washcoat. So while modeling surface reaction I need to know whether I can just use single global reaction of CO oxidation: CO + 0.5O2 --> CO2 and specifying Pt as site species ( or) should I use detailed global reaction with surface species : CO + Pt -->CO(s) O2 + Pt --> O(s) O(s) + CO(s) --> CO2

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March 12, 2018, 03:33		#2
Kummi Senior Member Kumaresh Join Date: Oct 2016 Posts: 355 Rep Power: 13	Hello Porsche, You need to implement detailed elementary surface reactions for CO oxidation on Pt surface site. Impose thermodynamic datas, Arrhenius parameters with surface site density to move on for your solution.. Good luck

March 12, 2018, 05:37		#3
porsche New Member harsh Join Date: Mar 2018 Posts: 2 Rep Power: 0	Hi #Kummi. Thanks for your reply. I also would like to know whether can we input sticking coefficient in fluent for adsorption reactions.

March 12, 2018, 06:40		#4
Kummi Senior Member Kumaresh Join Date: Oct 2016 Posts: 355 Rep Power: 13	Hello Porsche, In Fluent, we cant input sticking coefficient value, however you can furnish initial surface coverage, coverage dependent reaction value and surface site density. *Sticking coefficient can be inserted in surface elementary reactions alone Thank you^^