| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 60693 | Journal of Catalysis | 2015 | 12 Pages |
•Linear hexenes and octenes react with heptanoic acid on Amberlyst® 15 via an Eley–Rideal mechanism.•Olefin is the adsorbed species; heptanoic acid reacts from the bulk phase.•An LH mechanism was incorrect but could still reproduce much of the kinetic data.•Hexenes reacted faster than octenes.•Double bond isomerization was much faster than esterification.
The reversible, direct esterification of 1-hexene and 1-octene with heptanoic acid on Amberlyst® 15 (dry) was studied at 75 °C to determine kinetics and mechanism. The forward surface reaction occurred by an Eley–Rideal mechanism, in which adsorbed olefin reacted with bulk phase heptanoic acid; the reverse reaction, ester decomposition, required just one surface site. While detailed studies pointed to an Eley–Rideal mechanism, a Langmuir–Hinshelwood mechanism was nearly as good as the Eley–Rideal mechanism for reproducing kinetic data observed across several hours of reaction. Authors conclude that a cursory investigation can support a Langmuir–Hinshelwood mechanism, while a detailed investigation supports an Eley–Rideal mechanism in this system.
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