Heteropolyacid based catalysts and their use in the préparation of aliphatic carboxylic acids

A new process for the prepn. of aliphatic carboxylic acids comprises the controlled oxidn. of the corresp. alkanes using an O2 source in the presence of a catalyst, the active phase of which is a heteropoly acid of formula (AaBb)f(CcDdEeOx) delta <-> (I). In (I): A = H<+>, alkali metal i...

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Bibliographic Details
Main Authors TESSIER, LAURENT, GUBELMANN-BONNEAU, MICHEL, BORDES, ELISABETH
Format Patent
LanguageEnglish
French
German
Published 22.11.1995
Edition6
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:A new process for the prepn. of aliphatic carboxylic acids comprises the controlled oxidn. of the corresp. alkanes using an O2 source in the presence of a catalyst, the active phase of which is a heteropoly acid of formula (AaBb)f(CcDdEeOx) delta <-> (I). In (I): A = H<+>, alkali metal ion, or NH4<+>; B = VO<2+>, VO<3+>, an alkaline earth ion, or a metal from gps. VIIA, VIII, IB, IVB or VB; C = Mo and/or W; D = P, As, Sb, Si, Ge and/or B; E = V (possibly in combination with a metal from gps. VA, VIIA or VIII) or Cr; delta = a + alpha b, alpha being dependent on the charge of ion B, equal to 2.3 or 4; c = 5-(20-e) inclusive; d = 1-5 inclusive; and e = 1-9 inclusive. Also claimed is a catalyst compsn. contg. TiO2 as support and a heteropolyacid or polyoxo-metallate (both designated HPA) defined as above.
Bibliography:Application Number: EP19950401038