Catalyst for oxidn of olefins in liquid phase - aq solution of palladium cpd plus heteropolyacid with redox potential over0.5V

A catalyst for the liquid phase oxidn. of olefins contains an aq. soln. of a Pd cpd. and, as a reversible oxidant, a heteropolyacid or an isapolyacid or their salts having an redox potential >0.5 V. The concn. of Pd is pref. 1x10-6 to 0.5 gm atom/litre. and the polyacid concn. is pref. 1x10-3 to...

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Hauptverfasser:	MENNENGA HERBERT ULRICH, VIKTOR FILAGRIEVICH ODYAKOV, MARGARITA MIROKHIMOVA DZHALALOVA, NINA BORISOVNA SHITOVA, KLAVDY IVANOVICH MATEVEEV, ALEXANDR VASILIEVICH RUMYANTSEV, LIDIA IVANOVNA KUZNETSOVA, OLGA KAMALOVNA AKMALOVA, TAMARA AFANASIEVNA BASALAEVA, LEV PETROVICH SHADRIN
Format:	Patent
Sprache:	eng ; ita
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	A catalyst for the liquid phase oxidn. of olefins contains an aq. soln. of a Pd cpd. and, as a reversible oxidant, a heteropolyacid or an isapolyacid or their salts having an redox potential >0.5 V. The concn. of Pd is pref. 1x10-6 to 0.5 gm atom/litre. and the polyacid concn. is pref. 1x10-3 to 1 gm. mol/l. The catalyst is partic. used for prepg. acetaldehyde, acetic acid, acetonic and methyl ethyl ketone. Previous processes using Cu chloride as reversible oxidant have had the disadvantage of chloride ions giving bath corrosion problems and a proportion of chlorinated products.