PROCEDIMENTO PER LA PRODUZIONE DI ACIDO TEREFTALICO

Terephthalic acid is prepared by oxidizing a substantially homogeneous liquid reaction mixture, comprising p-toluic acid, optionally in admixture with p-xylene and partially oxidized p-xylene derivatives, 5% to 80% by weight of water, and a catalytically-active metal compound selected from manganese...

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Bibliographische Detailangaben
1. Verfasser:	HANOTIER JACQUES D. V
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:	Terephthalic acid is prepared by oxidizing a substantially homogeneous liquid reaction mixture, comprising p-toluic acid, optionally in admixture with p-xylene and partially oxidized p-xylene derivatives, 5% to 80% by weight of water, and a catalytically-active metal compound selected from manganese compounds, cobalt compounds and mixtures thereof, with a molecular oxygen-containing gas. At least a minimum amount of M millimoles of the catalytically-active metal compound per kg of the liquid reaction mixture is used, wherein M is defined by the following equation: wherein Y represents the molar ratio of water/p-toluic acid in the reaction mixture, x represents the molar ratio of manganese/total manganese + cobalt in the catalyst composition A equals about 0.200, B equals about 10.9, C equals about 4.35; and D equals about 0.0724.t