The catalytic oxidation of benzene with nitrous oxide (NO) 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 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.

中文翻译：

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ZSM-5 沸石上 N2O 氧化苯：气相和超临界条件的比较


在超临界条件下，在连续流反应器中进行了 ZSM-5 沸石与一氧化二氮 (NO) 催化氧化苯的实验，并与气相反应的结果进行了比较。超临界实验条件（300~435℃，6.0~18.0MPa）下的芳香底物和一氧化二氮既是试剂，也是超临界介质。已经确定，由于超临界条件下催化剂的可逆失活有限以及通过致密反应介质去除焦炭前体，苯超临界氧化成苯酚的生产率显着超过气相法的生产率。此外，一项实验还证明，在从气相反应条件过渡到超临界条件的过程中，可以成功地对失活的氧化催化剂进行原位再生。