Catalytic Kinetics: ethylene_oxidation
Catalytic reaction kinetics data — activation energy, pre-exponential factors, rate expressions, selectivity, conversion, and deactivation rates for industrial catalytic processes
| reaction id | catalyst id | activation energy kJ mol (kJ/mol) | catalyst name | conversion pct typical (%) | deactivation rate hr (1/hr) | notes | pre exponential factor | pre exponential units | pressure range bar | rate expression | rate law type | reaction order forward | reaction stoichiometry | selectivity pct (%) | space velocity hr | temperature range C |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ethylene_oxidation | ag_al2o3_ethylene | 63 | Ag/Al2O3 ethylene epoxidation | 8 | 0.0002 | Industrial Ag catalyst; selectivity 75-85% ethylene oxide; promoted with Cs Cl Re; competing total combustion Ea~100 kJ/mol; LHHW | 13,200,000 | mol/kg_cat/s | 10-25 | r_EO = k_EO*K_C2H4*P_C2H4*K_O2*P_O2^0.5 / (1+K_C2H4*P_C2H4+K_CO2*P_CO2)^2 | langmuir_hinshelwood | 1 | C2H4 + 0.5O2 → C2H4O | 80 | 2000-8000 | 220-290 |
| ethylene_oxidation | ag_cs_re_promoted | 62 | Ag/Cs/Re/Al2O3 modern EO catalyst | 10 | 0.00015 | Promoted Ag gives selectivity up to 90%; Cs/Re/Cl promoters electronically modify Ag; modern industrial standard | 11,000,000 | mol/kg_cat/s | 10-25 | r_EO = k_EO*P_C2H4*P_O2^0.5 / (1+K_C2H4*P_C2H4)^2 | langmuir_hinshelwood | 1 | C2H4 + 0.5O2 → C2H4O | 88 | 2000-8000 | 230-270 |
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