PROCESS FOR PREPARING OXALIC ACID AND ESTERS OF SAME

The present invention relates to a process for preparing oxalic acid and esters of same. More particularly, this invention relates to a catalytic process for preparing oxalic acid and esters of same by oxidative reaction in a liquid phase of carbon monoxide and water or alcohols with oxygen in the p...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GARDANO, ANDREA, CASSAR, LUIGI
Format:	Patent
Sprache:	eng ; fre
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:	The present invention relates to a process for preparing oxalic acid and esters of same. More particularly, this invention relates to a catalytic process for preparing oxalic acid and esters of same by oxidative reaction in a liquid phase of carbon monoxide and water or alcohols with oxygen in the presence of redox systems. The catalyst systems used in accordance with this invention comprises a redox catalyst consisting essentially of a salt of Pd (II) and salts of a metal more electropositive than Pd having at least two oxidation states and, optionally, salts of alkaline metals, and co-catalytic amounts of at least one base having the formula R2NH in which the groups R which may be like or unlike are selected from the group consisting of hydrogen and alkyl radicals having from 1 to 10 carbon atoms.