PROCESS FOR THE PREPARATION OF A PHENOL

(15) AE 7175 Process for the preparation of a phenol by an oxidative decarboxylation in the liquid phase of a corresponding arylcarboxylic acid in the presence of a Cu(I)-containing catalyst, characterized in that an oxidative decarboxylation is carried out at a temperature between 191-270.degree.C,...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	FRIJNS, LEON H. B, OFFERMANNS, MATTHIAS R. J, BUIJS, WIM
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS GENERAL METHODS OF ORGANIC CHEMISTRY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR RELEVANT APPARATUS TRANSPORTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	(15) AE 7175 Process for the preparation of a phenol by an oxidative decarboxylation in the liquid phase of a corresponding arylcarboxylic acid in the presence of a Cu(I)-containing catalyst, characterized in that an oxidative decarboxylation is carried out at a temperature between 191-270.degree.C, in the presence of water, with such an amount of oxygen being added that so much copper remains present as Cu(I) that a selectivity to phenol is obtained of more than 92% measured at 1 bar, and phenol is separated off. The oxidative decarboxylation is preferably carried out by: a) oxidation of the catalyst at a temperature of 191-240.degree.C for at most 20 minutes, with such an amount of oxygen being added that at least 0.04 wt.% copper remains present as Cu(I); b) reaction of the oxidized catalyst of step a) and formation of the phenol in the absence of oxygen, in the presence of water, at a temperature of 210-270.degree.C.