Catalyst pathwaysRunning
Reaction vessel. Catalyst reduction at 52.8 kJ/mol. Barrier accounted 104.8 kJ/mol, Uncatalysed barrier 75 kJ/mol. Currently barrier accounted is over by 29.8 kJ/mol.TUNINGREACTANTSPRODUCTSACTIVATION PATH52.8 KJ/MOL
t = 0.0s

Barrier accounted

104.8kJ/mol

Uncatalysed barrier

75kJ/mol

52.8 kJ/mol

Reaction vessel. Catalyst reduction at 52.8 kJ/mol. Barrier accounted 104.8 kJ/mol, Uncatalysed barrier 75 kJ/mol. Currently barrier accounted is over by 29.8 kJ/mol.

What has to balanceEa,cat=EaΔEE_{a,cat} = E_a - \Delta E

What is happening

You are called to an exhaust converter that stopped working in cold weather.

The converter cannot get the reaction over its barrier. Uncatalysed it needs 75 kJ/mol, the converter supplies only 52 kJ/mol, and the catalyst’s contribution is set wrong.