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US 5,990,348 AGranted
Conversion of alkanes to unsaturated carboxylic acids over heteroploy acids supported on polyoxometallate salts
AssigneesSunoco, Inc., Rohm and Haas Company
InventorsJames E. Lyons, Anthony F. Volpe, Paul E. Ellis, Jr., Swati Karmakar
Life of this patent
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Abstract
Alkanes are converted to unsaturated carboxylic acids by contacting an alkane with an oxidizing agent and a heteropolyacid supported on wide pore polyoxometallate salts.
Claims27
A process for the conversion of alkanes to unsaturated carboxylic acids which comprises contacting an alkane with an oxidizing agent and a supported heteropolyacid, wherein said support comprises an insoluble polyoxometallate salt having the formula:
- C.sub.a H.sub.(e-az) (X.sub.k M.sub.m-x M'.sub.x M".sub.n O.sub.y).sup.-e
- where cation C is selected from the group consisting of potassium, rubidium, cesium, magnesium, calcium, strontium, barium, vanadium, chromium, lanthanum, manganese, iron, cobalt, ruthenium, copper, actinide metal, lanthanide metal, metal oxy ion, ammonium, tetraalkylammonium, pyridinium, quinolinium, protonated aromatic amines and protonated aliphatic amines, or combinations thereof;
- X is a Group IIIB, IVB, VB, VIB or transition metal;
- M is molybdenum or tungsten or combinations thereof;
- M' is vanadium;
- M" is independently zinc or a transition metal different from M and M', or combination thereof;
- z is the charge on said cation C;
- a is the number of cations C;
- e is the charge of anion (X.sub.k M.sub.m-x M'.sub.x M".sub.n O.sub.y);
- k is 1 to 5, m is 5 to 17, n is 0 to 3;
- y is 18 to 60;
- and when M is molybdenum, x is 0 to 3;
- and when M is tungsten x is 0 to 6.
10 more elements
Dependencies are inferred from the claim text.