METHOD OF OBTAINING PHENOL BY HYDRODEOXYGENATION OF DIOXYBENZOLES Russian patent published in 2008 - IPC C07C39/04 C07C39/08 B01J23/16 

FIELD: chemistry.

SUBSTANCE: flow of water solution of dioxybenzole with concentration from 5 to 60 wt % with volume rate, expressed in kg of dioxybenzole/hour/kg of catalyst 0.1 - 10 hours^-1, and hydrogen flow are supplied to adiabatic reactor with immobile layer of catalyst. Reaction of hydrodeoxygenation in vapour phase working in continuous regime in presence of catalyst is performed. Flow of dioxybenzole water solution and hydrogen flow are supplied in such amount that ratio between total quantity of hydrogen and dioxubenzole moles was within range from 2:1 to 50:1. Reaction is carried out at temperature within range from 250 to 500°C and pressure 0.1-10 MPa. Used catalyst represents catalyst on carrier, containing element of group VIB, or their mixture, or element of group VIII of periodic system, or their mixture and promoter.

EFFECT: invention allows to increase decree of dioxybenzole conversion, selectivity in relation to phenol and process productivity.

21 cl, 27 ex, 1 dwg