FIELD: organic synthesis catalysts.
SUBSTANCE: exhausted phthalocyanine catalysts used in the process of carboxylation of propylene oxide with carbon dioxide are regenerated by treatment for 120-180 min with carbon dioxide in above-critical state at 100-150оС and pressure 200-300 atm. Such treatment allows full restoration of catalytic activity of tert-butyl-substituted phthalocyanine-aluminum chloride, cobalt tert-butyl-substituted phthalocyanine, and dysprosium tert-butyl-substituted phthalocyanine.
EFFECT: increased regeneration efficiency.
2 dwg, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| CONTINUOUS PROCESS FOR PRODUCTION OF PROPYLENE CARBONATE VIA PROPYLENE OXIDE CARBOXYLATION REACTION IN PRESENCE OF PHTHALOCYANINE CATALYSTS | 2003 |
|
RU2228933C1 |
| RECOVERY OF ANALYTICAL AND PREPARATIVE COLUMNS FOR HIGHLY EFFECTIVE LIQUID CHROMATOGRAPHY | 2003 |
|
RU2239827C1 |
| METHOD FOR CATALYTIC BINDING OF CARBON DIOXIDE | 1996 |
|
RU2100355C1 |
| METHOD OF PREPARING POLYMER MATERIALS WITH SPECIFIED POROSITY VIA TREATMENT WITH CARBON DIOXIDE IN SUPERCRITICAL STATE FOLLOWED BY HEAT TREATMENT AT ATMOSPHERIC PRESSURE | 2004 |
|
RU2266305C2 |
| METHOD OF PRODUCING C-UREA | 2016 |
|
RU2638837C1 |
| CAMPHOLENE ALDEHYDE SYNTHESIS METHOD | 2009 |
|
RU2402522C1 |
| METHOD FOR SYNTHESIS OF 2-HYDROXY-6-ISOPROPENYL-3-METHYL-CYCLOHEX-3-ENONE | 2009 |
|
RU2409549C1 |
| METHOD OF ELECTROCATALYTIC BINDING OF CARBON DIOXIDE | 1997 |
|
RU2141470C1 |
| METHOD FOR PRODUCTION OF PROPYLENE FROM PROPANE UNDER ACTION OF SUPERCRITICAL CO | 2019 |
|
RU2778109C2 |
