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OwnerAllan J. Jacobson, Teh C. Ho +2inventors
InventorsAllan J. Jacobson, Teh C. Ho, Russell R. Chianelli, Theresa Pecoraro
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Hydrocarbon feeds are upgraded by contacting a feed, at elevated temperature and in the presence of hydrogen, with a catalyst comprising an amorphous sulfide of iron and a metal selected from the group consisting of Mo, W and mixture thereof. The catalysts are prepared by heating one or more catalyst precursor salts under oxygen-free conditions in the presence of sulfur at a temperature of at least about 250.degree. C. The precursor salts will contain a thiometallate anion of Mo, W or mixture thereof and a cation comprising iron as a promoter metal and, optionally, additional divalent promoter metals, wherein said promoter metal or metals are chelated by at least one neutral, nitrogen-containing polydentate ligand and wherein said additional promoter metal is selected from the group consisting of Ni, Co, Mn, Zn, Cu and mixture thereof.
A bulk, unsupported catalyst composition (of matter comprising) consisting essentially of an amorphous sulfide of iron and a metal selected from the group consisting of Mo, W and mixture thereof.
A process for preparing a catalyst composition comprising an amorphous sulfide of iron and at least one metal selected from the group consisting of Mo, W and mixture thereof, said process comprising heating one or more precursor salts, at a temperature of at least about 150.degree. C., in the presence of sulfur and under oxygen-free conditions for a time sufficient to form said catalyst, wherein said precursor salt comprises a thiometallate anion of Mo, W or mixture thereof and a cation containing iron, wherein said iron in said cation is chelated by at least one neutral, nitrogen-containing polydentate ligand.
A process for preparing a catalyst composition comprising an amorphous sulfide of iron and at least one metal selected from the group consisting of Mo, W and mixture thereof, said process comprising heating one or more precursor salts at a temperature of at least about 150.degree. C., in the presence of sulfur and under oxygen-free conditions for a time sufficient to form said catalyst, wherein said precursor salt or salts are of the general formula (ML)(Mo.sub.y W.sub.1-y S.sub.4), wherein M comprises iron, wherein y is any value ranging from 0 to 1 and wherein L is one or more neutral, nitrogen-containing ligands at least one of which is a chelating polydentate ligand.
Dependencies are inferred from the claim text.