Oxidation of alkanes
AssigneeExxonMobil Chemical Patents Inc.
InventorsMatthew W. Holtcamp, James C. Vartuli
Life of this patent
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Abstract
Alkanes are oxidised to oxygenates such as carboxylic acids with molecular oxygen employing a two component catalyst system which uses a liganded heavy metal compound and a mixed metal oxide.
Claims39
A process for the oxidation of C1 to C5 alkanes comprising contacting the alkane with oxygen in the presence of a two component catalyst system said system comprising a first component which comprises a ligand co-ordinated heavy metal, where the heavy metal is selected from palladium, platinum, osmium, rhenium, indium, rhodium, ruthenium and gold and mixtures thereof, and the ligand is selected from N,N,N,N-tetramethylethylenediamine, bipyridine, 2,6-bis[1-2,6-di-I-propylphenyl-imino)ethyl]pyridine, 2,2161,211 terpyridine and 1,2 bis (dimethyl phosphino) ethane and mixtures thereof;
- and a second component which comprises a mixed metal oxide, where the mixed metal oxide comprises a calcined composition of Moa, Vb, Gac, Pdd, Nbe, and Xf, wherein X=at least one element selected from the group consisting of La, Te, Ge, Zn, Si, In and W;
- a is 1;
- b is 0.01 to 0.9;
- c is >0 to 0.2;
- d is 0.0000001 to 0.2;
- e is >0 to 0.2;
- and f is >0 to 0.5.
A process for the oxidation of C1 to C5 alkanes comprising contacting the alkane with oxygen in the presence of a two component catalyst system said system comprising a first component which comprises a ligand co-ordinated heavy metal, where the heavy metal is selected from palladium, platinum, osmium, rhenium, indium, rhodium, ruthenium and gold and mixtures thereof, and the ligand is selected from N,N,N,N-tetramethylethylenediamine, bipyridine, 2,6-bis[1-2,6-di-I-propylphenyl-imino)ethyl]pyridine, 2,2161,211 terpyridine and 1,2 bis (dimethyl phosphino) ethane and mixtures thereof;
- and a second component which comprises a mixed metal oxide, where the mixed metal oxide comprises Mo, V, Te, O and X wherein X is at least one element selected from the group consisting of niobium, tantalum, tungsten, titanium, alumium, zirconium, chromium, manganese, iron, ruthenium, cobalt, rhodium, nickel, palladium, platinum, antimony, bismuth, boron, indium, and cerium.
Dependencies are inferred from the claim text.