Active Site
Poisoned
Reactant
Product
Activity Over Time
Selectivity (A vs B)
Catalyst Properties
Reaction Conditions
Statistics
100%
Active
0%
Poisoned
0
Conv. Rate
50%
Select. A
0
TON
0
Time
Langmuir-Hinshelwood
Reactants adsorb on active sites, react, and products desorb. Poisoning blocks sites, reducing activity.
- Reversible: Poison desorbs at high T
- Irreversible: Permanent blocking
- Selectivity: Site-specific poisoning