| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 65020 | Journal of Molecular Catalysis A: Chemical | 2015 | 4 Pages |
•A novel metal- and initiator-free catalytic oxidation system was developed.•The synergistic effect of NHQI and Car-NHPI enhanced the catalytic activities.•The acid-base neutralization and radical exchange were main mechanistic profile.
A metal- and initiator-free catalytic system comprising N-hydroxyquinolinimide (NHQI) and 4-carboxyl-N-hydroxyphthalimide (Car-NHPI) was developed for the oxidation of ethylbenzene using molecular oxygen as the terminal oxidant. The catalytic activity of Car-NHPI/NHQI catalytic system was higher than that of Car-NHPI or NHQI alone. The high catalytic performance of Car-NHPI/NHQI catalytic system could be attributed to the dual interactions of radical exchange and acid-base neutralization, which resulted in the increment of the conversion of ethylbenzene up to 70% and the selectivity of acetophenone up to 66% at 120 °C under 1 atm O2 for 15 h.
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