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US 6,387,841 B1Granted
Polyoxometallate supported catalysts
AssigneeRohm and Haas Company
InventorsAnna. Marie Devlin, Anthony Frank Volpe, Jr.
Life of this patent
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Abstract
Disclosed are catalysts situated on a polyoxometallate support. Also disclosed are methods of preparing these catalysts and processes for the conversion of alkanes to unsaturated organic compounds using these catalysts.
Claims13
A catalyst composition comprising a catalyst situated on a polyoxometallate support;
- wherein the polyoxometallate support has the formula
- QaH(e−az)(XkMm−xM1xM2nOy)−e (I)
- wherein Q, is a cation selected from potassium, rubidium, cesium, magnesium, calcium, strontium, barium, transition metal, actinide metal, lanthanide metal, metal oxy ion, ammonium, tetraalkylammonium, pyridinium, quinolinium, protonated aromatic amines, protonated aliphatic arnines or mixtures thereof X is an element selected from Groups 3-16 elements;
- M=molybdenum, tungsten or a combination thereof;
- M1=vanadium;
- M2 is a transition metal different from M and M1;
- z=the charge on Q;
- a is the number of cations Q;
- k=1 to 5;
- m=5 to 20;
- n=0 to 3, x=0 to 6;
- y=18 to 62;
- and e is the charge of the polyoxornetallate ion;
- and
- provided that the catalyst is not a heteropolyacid.
12 more elements
A process for preparing a catalyst composition comprising a catalyst situated on a polyoxometallate support;
- wherein the polyoxometallate support has the formula
- QaH(e−az)(XkMm−xM1xM2nOy)−e (I)
- wherein Q, is a cation selected from potassium, rubidium, cesium, magnesium, calcium, strontium, barium, transition metal, actinide metal, lanthanide metal, metal oxy ion, ammonium, tetraalkylammonium, pyridinium, quinolinium, protonated aromatic amines, protonated aliphatic amines or mixtures thereof;
- X is an element selected from Groups 3-16 elements;
- M=molybdenum, tungsten or a combination thereof;
- M1=vanadium;
- M2 is a transition metal different from M and M1;
- z=the charge on Q;
- a is the number of cations Q;
- k=1 to 5;
- m=5 to 20;
- n=0 to 3;
- x=0 to 6;
- y=18 to 62;
- and e is the charge of the polyoxometallate ion;
- including the step of admixing the catalyst with the polyoxometallate support;
- provided that the catalyst is not a heteropolyacid.
14 more elements
Dependencies are inferred from the claim text.