FIELD: chemical technology. SUBSTANCE: invention relates to a method of production of phenol by direct gas-phase oxidation of benzene with nitrous oxide in the presence of industrial zeolites. Oxidation of benzene to phenol is carried out at 350-450 C with nitrous oxide in the presence of high-siliceous zeolite catalyst modified by addition of metal ions. Impregnation is carried out by metal salt aqueous solutions by moisture capacity of zeolite preliminary calcined at 500-550 C and then activated by calcination at high temperature. Sodium, calcium, barium, strontium, manganese, chromium and antimony ions or their mixtures are used as additions and ZSM-5-50 and ZSM-5-80 are used as a zeolite. Catalyst activation is performed for two stages. At the first stage catalyst is calcined in air flow at 450-500 C and at the second stage at 700-900 C. The volume ratio benzene : nitrous oxide = 1 : (1.7-2.2). EFFECT: enhanced selectivity of process, increased yield of phenol. 4 cl, 1 tbl, 17 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCTION OF PHENOL AND ITS DERIVATIVES AND METHOD OF OXIDATION OF BENZENE AND ITS DERIVATIVES | 1998 |
|
RU2202532C2 |
| METHOD OF OXIDATION OF TOLUENE INTO PHENOL, AND/OR CRESOLS | 1999 |
|
RU2155181C1 |
| PROCESS FOR PREPARING PHENOL AND DERIVATIVES THEREOF | 1997 |
|
RU2127721C1 |
| METHOD OF PRODUCTION AND ACTIVATION OF POLY-METALLIC ZEOLITE CATALYSTS, COMPOSITION AND APPLICATION OF CATALYST FOR DECOMPOSITION OF NO | 2002 |
|
RU2297278C2 |
| SULFUR-RESISTANT CATALYST FOR HYDRODESULFURIZATION PROCESSES AND MOTOR FUEL HYDROGENATION (OPTIONS) | 2005 |
|
RU2296618C1 |
| METHOD FOR PRODUCING AND REGENERATING HYDROXYLATION CATALYST FOR AROMATIC COMPOUNDS WITH NITROGEN OXIDE AND AROMATIC COMPOUND HYDROXYLATING METHOD | 2016 |
|
RU2630473C1 |
| METHOD OF ACTIVATION OF ZEOLITE CATALYSTS FOR PROCESS OF OXIDIZING HYDROXYLATION OR AROMATIC COMPOUNDS | 2001 |
|
RU2192308C1 |
| METHOD FOR PREPARING HYDROXYAROMATIC COMPOUNDS | 2001 |
|
RU2266892C2 |
| PROCESS FOR ALKYLATING AROMATIC COMPOUND | 1991 |
|
RU2014316C1 |
| METHOD OF PRODUCING PHENOL AND DERIVATIVES THEREOF | 1994 |
|
RU2074164C1 |
