PROCESSO PER LA PREPARAZIONE DI ANIDRIDE ACETICA

Acetic anhydride is prepared from methyl acetate and/or dimethyl ether in carbonylation processes comprising the use of a halide, carbon monoxide and a Group VIII noble metal in the presence of promoters comprising metallic zirconium and an organo-phosphorus compound or an organo-nitrogen compound w...

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Bibliographische Detailangaben
1. Verfasser:	PUGACH JOSEPH
Format:	Patent
Sprache:	ita
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Acetic anhydride is prepared from methyl acetate and/or dimethyl ether in carbonylation processes comprising the use of a halide, carbon monoxide and a Group VIII noble metal in the presence of promoters comprising metallic zirconium and an organo-phosphorus compound or an organo-nitrogen compound wherein the phosphorus and nitrogen are trivalent, or an arsine of the formula: wherein R and R1 are monocyclic aryl groups or alkyl groups and R2 is the radical a monocyclic aryl group or an alkyl group, and wherein R3 and R4 are each a monocyclic aryl group or an alkyl group, n being zero or a digit from 1-20.