Abstract: The catalytic oxidation of benzene with nitrous oxide (N2O) over ZSM-5 zeolite has been carried out in a continuous-flow reactor under supercritical conditions and compared with the results of the gas-phase reaction. Aromatic substrates and nitrous oxide under the conditions of supercritical experiments (300–435 ◦C, 6.0–18.0 MPa) are both reagents and the supercritical medium. It has been established that the productivity of the supercritical oxidation of benzene into phenol significantly exceeds the productivity of the gas-phase process owing to the limited reversible deactivation of the catalyst under supercritical conditions and the in situ removal of the coke precursors by the dense reaction medium. In addition, it has been demonstrated that a successful in situ regeneration of the deactivated oxidation catalyst can be carried out during the transition from gas-phase reaction conditions to supercritical conditions in one experiment.

Cite: Bogdan V.I. , Zholobenko V.L. , Bogdan T.V. , Kustov A.L. , Koklin A.E. , Mishanin I.I. , Mashchenko N.V. , Bogorodskiy S.E.
Oxidation of benzene with N2O on ZSM-5 zeolite: A comparison of gas-phase and supercritical conditions
Journal of Supercritical Fluids. 2024. V.213. 106355 . DOI: 10.1016/j.supflu.2024.106355 WOS Scopus OpenAlex

Dates:

Submitted:	Apr 8, 2024
Accepted:	Jul 16, 2024
Published online:	Jul 22, 2024

Identifiers:

≡ Web of science:	WOS:001290415300001
≡ Scopus:	2-s2.0-85200609668
≡ OpenAlex:	W4400879831

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