US4622128A — Hydrotreating catalysts comprising supported mixt…

Claim 1

Independent Claim 142 words

A hydrocracking process comprising contacting a hydrocarbon feed at a temperature of at least about 100° C. and in the presence of hydrogen, with a catalyst obtained by compositing a quantity of inorganic refractory oxide support material and a hydrated oxide of trivalent chromium with one or more precursor salts and heating said composite at elevated temperature of at least about 150° C., in the presence of sulfur or sulfur bearing compound and under oxygen-free conditions for a time sufficient to form said catalyst, wherein said precursor salt contains a tetrathiometallate anion of Mo, W or mixture thereof and a cation comprising the conjugate acid of one or more neutral, nitrogen-containing ligands, L, at least one of which is a chelating polydentate ligand, wherein said feed contacts said catalyst for a time sufficient to hydrocrack at least a portion of said feed.

Claim 2

Dependent Claim 142 words

A hydrocracking process comprising contacting a hydrocarbon feed at a temperature of at least about 100° C. and in the presence of hydrogen, with a catalyst obtained by compositing a quantity of inorganic refractory oxide support material and a hydrated oxide of trivalent chromium with one or more precursor salts and heating said composite at elevated temperature of at least about 150° C., in the presence of sulfur or sulfur bearing compound and under oxygen-free conditions for a time sufficient to form said catalyst, wherein said precursor salt contains a tetrathiometallate anion of Mo, W or mixture thereof and a cation comprising the conjugate acid of one or more neutral, nitrogen-containing ligands, L, at least one of which is a chelating polydentate ligand, wherein said feed contacts said catalyst for a time sufficient to hydrocrack at least a portion of said feed.

Claim 3

Dependent Claim 78 words

The process of claim 1 wherein said tetrathiometallate salt is of the general formula (L') (Mo y W 1-y S 4 ), wherein y is any value ranging from 0 to 1, wherein L' is the conjugate acid of one or more ligands, L, with a charge sufficient to balance the dinegative charge of the tetrathiometallate anion and wherein ligand L is one or more neutral nitrogen-containing ligands, at least one of which is a chelating polydentate ligand.

Claim 4

Dependent Claim 22 words

The process of claim 2 wherein said precursor salt is formed in the presence of a slurry of particles of support material.

Claim 5

Dependent Claim 29 words

The process of any of claims 1, 2 or 3 wherein ligand L is selected from the group consisting of alkyl amines, aryl amines, nitrogen heterocycles and mixtures thereof.

Claim 6

Dependent Claim 12 words

The process of claim 3 wherein ligand L comprises an alkyl amine.

Claim 7

Dependent Claim 16 words

The process of claim 4 wherein said catalyst is formed in the presence of excess sulfur.

Claim 8

Dependent Claim 15 words

The process of claim 6 wherein said support material comprises an oxide of trivalent chromium.

Claim 9

Dependent Claim 149 words

A process for hydrotreating a hydrocarbon feed which comprises contacting said feed at a temperature of at least about 150° C. and in the presence of hydrogen with a catalyst obtained by compositing a quantity of inorganic refractory oxide support material and a hydrated oxide of trivalent chromium with one or more precursor salts and heating said composite at elevated temperature of at least about 150° C., in the presence of excess sulfur in the form of one or more sulfur-bearing compounds and under oxygen-free conditions for a time sufficient to form said catalyst, wherein said precursor salt contains a tetrathiometallate anion of Mo, W or mixture thereof and a cation comprising the conjugate acid of one or more neutral, nitrogen-containing ligands, L, at least one of which is a chelating polydentate ligand, said contacting occurring for a time sufficient to hydrotreat at least a portion of said feed.

Claim 10

Dependent Claim 149 words

A process for hydrotreating a hydrocarbon feed which comprises contacting said feed at a temperature of at least about 150° C. and in the presence of hydrogen with a catalyst obtained by compositing a quantity of inorganic refractory oxide support material and a hydrated oxide of trivalent chromium with one or more precursor salts and heating said composite at elevated temperature of at least about 150° C., in the presence of excess sulfur in the form of one or more sulfur-bearing compounds and under oxygen-free conditions for a time sufficient to form said catalyst, wherein said precursor salt contains a tetrathiometallate anion of Mo, W or mixture thereof and a cation comprising the conjugate acid of one or more neutral, nitrogen-containing ligands, L, at least one of which is a chelating polydentate ligand, said contacting occurring for a time sufficient to hydrotreat at least a portion of said feed.

Claim 11

Dependent Claim 78 words

The process of claim 8 wherein said tetrathiometallate salt is of the general formula (L') (Mo y W 1-y S 4 ), wherein y is any value ranging from 0 to 1, wherein L' is the conjugate acid of one or more ligands, L, with a charge sufficient to balance the dinegative charge of the tetrathiometallate anion and wherein ligand L is one or more neutral nitrogen-containing ligands, at least one of which is a chelating polydentate ligand.

Claim 12

Dependent Claim 19 words

The process of claim 9 wherein said catalyst is formed in the presence of a slurry of support material.

Claim 13

Dependent Claim 29 words

The process of any of claims 8, 9 or 10 wherein ligand L is selected from the group consisting of alkyl amines, aryl amines, nitrogen heterocycles and mixtures thereof.

Claim 14

Dependent Claim 12 words

The process of claim 11 wherein ligand L comprises an alkyl amine.

Claim 15

Dependent Claim 15 words

The process of claim 12 wherein said support material comprises an oxide of trivalent chromium.

Claim 16

Dependent Claim 13 words

The process of claim 13 wherein said feed is a lube oil fraction.

Claim 17

Dependent Claim 13 words

The process of claim 8 wherein said feed is a lube oil fraction.

Claim 18

Dependent Claim 159 words

A process for removing nitrogen from a nitrogen-containing hydrocarbon feed which comprises contacting said feed at a temperature of at least about 150° C. and in the presence of hydrogen with a catalyst obtained by compositing a quantity of inorganic refractory oxide support material, at least a portion of which comprises an oxide of trivalent chromium, with one or more precursor salts and heating said composite at elevated temperature of at least about 150° C., in the presence of excess sulfur in the form of one or more sulfur-bearing compounds and under oxygen-free conditions for a time sufficient to form said catalyst, wherein said precursor salt contains a tetrathiometallate anion of Mo, W or mixture thereof and a cation comprising the conjugate acid of one or more neutral, nitrogen-containing ligands, L, at least one of which is a chelating polydenate ligand, said contacting occurring for a time sufficient to remove at least a portion of nitrogen from said feed.

Claim 19

Dependent Claim 159 words

A process for removing nitrogen from a nitrogen-containing hydrocarbon feed which comprises contacting said feed at a temperature of at least about 150° C. and in the presence of hydrogen with a catalyst obtained by compositing a quantity of inorganic refractory oxide support material, at least a portion of which comprises an oxide of trivalent chromium, with one or more precursor salts and heating said composite at elevated temperature of at least about 150° C., in the presence of excess sulfur in the form of one or more sulfur-bearing compounds and under oxygen-free conditions for a time sufficient to form said catalyst, wherein said precursor salt contains a tetrathiometallate anion of Mo, W or mixture thereof and a cation comprising the conjugate acid of one or more neutral, nitrogen-containing ligands, L, at least one of which is a chelating polydenate ligand, said contacting occurring for a time sufficient to remove at least a portion of nitrogen from said feed.

Claim 20

Dependent Claim 20 words

The process of claim 16 wherein said precursor salt is formed in the presence of a slurry of support material.

Claim 21

Dependent Claim 78 words

The process of claim 16 wherein said tetrathiometallate salt is of the general formula (L') (Mo y W 1-y S 4 ), wherein y is any value ranging from 0 to 1, wherein L' is the conjugate acid of one or more ligands, L, with a charge sufficient to balance the dinegative charge of the tetrathiometallate anion and wherein ligand L is one or more neutral nitrogen-containing ligands, at least one of which is a chelating polydentate ligand.

Claim 22

Dependent Claim 22 words

The process of claim 18 wherein said precursor salt is formed in the presence of a slurry of particles of support material.

Claim 23

Dependent Claim 29 words

The process of any of claims 16, 18 or 19 wherein ligand L is selected from the group consisting of alkyl amines, aryl amines, nitrogen heterocycles and mixtures thereof.

Claim 24

Dependent Claim 12 words

The process of claim 20 wherein ligand L comprises an alkyl amine.

Claim 25

Dependent Claim 12 words

The process of 21 wherein said feed is a lube oil fraction.

Claim 26

Dependent Claim 12 words

The process of 21 wherein said feed is a lube oil fraction.

Claim 27

Dependent Claim 13 words

The process of claim 16 wherein said feed is a lube oil fraction.

Claim 28

Dependent Claim 157 words

A process for improving the oxidation stability of a nitrogen and sulfur containing lube oil feed which comprises contacting said feed at a temperature of at least about 150° C. and in the presence of hydrogen with a catalyst obtained by compositing a quantity of inorganic refractory oxide support material and a hydrated oxide of trivalent chromium with one or more precursor salts and heating said composite at elevated temperature of at least about 150° C., in the presence of excess sulfur in the form of one or more sulfur-bearing compounds and under oxygen-free conditions for a time sufficient to form said catalyst, wherein said precursor salt contains a tetrathiometallate anion of Mo, W or mixture thereof and a cation comprising the conjugate acid of one or more neutral, nitrogen-containing ligands, L, at least one of which is a chelating polydentate ligand, said contacting occurring for a time sufficient to improve the oxidation stability of said feed.

Claim 29

Dependent Claim 157 words

A process for improving the oxidation stability of a nitrogen and sulfur containing lube oil feed which comprises contacting said feed at a temperature of at least about 150° C. and in the presence of hydrogen with a catalyst obtained by compositing a quantity of inorganic refractory oxide support material and a hydrated oxide of trivalent chromium with one or more precursor salts and heating said composite at elevated temperature of at least about 150° C., in the presence of excess sulfur in the form of one or more sulfur-bearing compounds and under oxygen-free conditions for a time sufficient to form said catalyst, wherein said precursor salt contains a tetrathiometallate anion of Mo, W or mixture thereof and a cation comprising the conjugate acid of one or more neutral, nitrogen-containing ligands, L, at least one of which is a chelating polydentate ligand, said contacting occurring for a time sufficient to improve the oxidation stability of said feed.

Claim 30

Dependent Claim 78 words

The process of claim 24 wherein said tetrathiometallate salt is of the general formula (L') (Mo y W 1-y S 4 ), wherein y is any value ranging from 0 to 1, wherein L' is the conjugate acid of one or more ligands, L, with a charge sufficient to balance the dinegative charge of the tetrathiometallate anion and wherein ligand L is one or more neutral nitrogen-containing ligands, at least one of which is a chelating polydentate ligand.

Claim 31

Dependent Claim 20 words

The process of claim 25 wherein said precursor salt is formed in the presence of a slurry of support material.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1989-11-10	1990-05-12	1990-11-11	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1993-11-10	1994-05-12	1994-11-11	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1997-11-10	1998-05-12	1998-11-11	$7700.00	Window Closed / Lapsed

Hydrotreating catalysts comprising supported mixtures of a sulfide of trivalent chromium and molybdenum or tungsten

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag