Irreversible reaction
C2H4O2givesC2H2O+H2O
- Direction
- Irreversible
- Processes
- 1
- Stated as
- Stoichiometry only
- Heat of reaction
- ΔH = 141,808 kJ/kmol (one process)
- Element balance
- Checked: balances
Species
| Species | Name | CAS | Role | Coefficient |
|---|---|---|---|---|
| C2H4O2 | Acetic acid | 64-19-7 | reactant | -1 |
| C2H2O | Ketene | 463-51-4 | product | 1 |
| H2O | Water | 7732-18-5 | product | 1 |
In the processes
CRACKCH3COOH → CH2CO + H2O- Element balance
- Balances in every element
- Heat of reaction
- ΔH = 141,808 kJ/kmol at 298.15 K, as written (calculated: ideal-gas formation enthalpies of process/materials.yaml at 298.15 K (-48570 - 241822 + 432200 kJ/kmol))
- Catalyst
- triethyl phosphate (homogeneous, about 0.1-0.5 wt% of the feed), neutralised by NH3 after the coil
Sources
What the processes cite for this reaction, each source once: for the reaction itself, its conversion, its heat of reaction or its catalyst. As the processes write them; DOIs, US patent numbers and web addresses are linked.
US 4,455,439 (Hoechst, 1984), Example: 700 C, 358 mbar furnace outlet, 84 % conversion, 92 % ketene on acid reacted
For the reaction · cited by Acetic anhydride by the ketene route (acetic acid cracking, 50 kt/a, concept)
US 8,653,303 B2 (Celanese, 2014), section on ketene: TEP 0.1-0.5 wt% of the feed
For the reaction · cited by Acetic anhydride by the ketene route (acetic acid cracking, 50 kt/a, concept)
Padmanabhan, Deshpande, Kuloor (1968) I&EC Process Des. Dev. 7(4) 511-516: TEP better than silica gel, best ketene yield at 750 C and 100 mmHg
For the reaction · cited by Acetic anhydride by the ketene route (acetic acid cracking, 50 kt/a, concept)
ideal-gas formation enthalpies of process/materials.yaml at 298.15 K (-48570 - 241822 + 432200 kJ/kmol)
For the heat of reaction · cited by Acetic anhydride by the ketene route (acetic acid cracking, 50 kt/a, concept)