REUSABLE FRIEDEL-CRAFTS CATALYSTS, THEIR USE, AND THEIR REGENERATION

Described is an improved process in which a Friedel-Crafts reaction is carried out in a reaction zone using a Friedel-Crafts catalyst. The improvement includes introducing anhydrous sodium tetrachloroferrate into the reaction zone as a Friedel-Crafts catalyst component. The anhydrous sodium tetrachl...

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Hauptverfasser:	HARKINS, A., E., JR, MANIMARAN, THANIKAVELU, BROEKER, JEFFREY, L, PAHN, HAO, V, WIKER, STEVEN, L, LIN, RONNY, W
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	Described is an improved process in which a Friedel-Crafts reaction is carried out in a reaction zone using a Friedel-Crafts catalyst. The improvement includes introducing anhydrous sodium tetrachloroferrate into the reaction zone as a Friedel-Crafts catalyst component. The anhydrous sodium tetrachloroferrate is a recyclable Friedel-Crafts catalyst. An especially efficacious catalyst system is formed in situ when the anhydrous sodium tetrachloroferrate is used in an acylation reaction in which an acylating agent, preferably acetyl chloride or acetic anhydride, or a combination of them, is employed. La présente invention a pour objet un procédé selon lequel une réaction de Friedel-Crafts est menée dans une unité de réaction en utilisant un catalyseur de Friedel-Crafts. L'invention inclut plus particulièrement l'introduction de tétrachloroferrate de sodium anhydre dans l'unité de réaction, ce composé servant de catalyseur de Friedel-Crafts. Le tétrachloroferrate de sodium anhydre est un catalyseur de Friedel-Crafts recyclable. Un système catalytique particulièrement efficace est formé in situ lorsque le tétrachloroferrate de sodium anhydre est utilisé dans une réaction d'acylation, ladite réaction employant un agent d'acylation, préférentiellement le chlorure d'acétyle, l'anhydride acétique, ou une combinaison des deux.