Process for hydrotreating hydro carbon feeds

Claim 2

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) precipitating an aqueous solution of one or more aluminum salt(s) by adjusting the pH to a range between about 5.5 and about 10.0 at a temperature in the range between about 20° C. and about 90° C., (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 8.0 to about 12.0, (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble salts of cobalt and a heavy metal selected from the group consisting of molybdenum, tungsten and mixtures thereof, at a pH in the range between about 4.0 and about 8.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 1% w to about 5% w cobalt and from about 8% w to about 32% w heavy metal, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 3

The process of claim 1 wherein the precipitation is carried out at a pH in the range between about 5.5 and about 8.0.

Claim 4

The process of claim 1 wherein the precipitation is carried out at a temperature between about 50° C. and about 85° C.

Claim 5

The process of claim 1 wherein the aging pH is in the range between about 9.0 and about 11.0.

Claim 6

The process of claim 1 wherein step (d) is carried out at a pH in the range between about 4.0 and about 6.0.

Claim 7

The process of claim 1 wherein said salts in step (d) are salts of cobalt and molybdenum.

Claim 8

The process of claim 6 wherein in step (d), a phosphorus-containing compound in an amount of from about 0.2 to about 1.5 moles of phosphorus per mole of molybdenum is added.

Claim 9

The process of claim 6 wherein said catalyst contains from about 2.5% w to about 4% w cobalt and from about 8% w to about 18% w molybdenum.

Claim 10

The process of claim 1 wherein in step (d), a phosphorus-containing compound in an amount of from about 0.2 to about 1.5 moles of phosphorus per mole of heavy metal is added.

Claim 11

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) titrating an aqueous solution of an acid aluminum salt and an aqueous solution of a basic aluminum compound at a pH in the range between about 5.5 and about 10.0 and a temperature in the range between about 20° C. and about 90° C., thereby forming a precipitate, (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 8.0 to about 12.0, (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble salts of cobalt and a heavy metal selected from the group consisting of molybdenum, tungsten and mixtures thereof, at a pH in the range between about 4.0 and about 8.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 1% w to about 5% w cobalt and from about 8% w to about 32% w heavy metal, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 12

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) titrating an aqueous solution of an acid aluminum salt and an aqueous solution of a basic aluminum compound at a pH in the range between about 5.5 and about 10.0 and a temperature in the range between about 20° C. and about 90° C., thereby forming a precipitate, (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 8.0 to about 12.0, (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble salts of cobalt and a heavy metal selected from the group consisting of molybdenum, tungsten and mixtures thereof, at a pH in the range between about 4.0 and about 8.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 1% w to about 5% w cobalt and from about 8% w to about 32% w heavy metal, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 13

The process of claim 10 wherein the precipitation is carried out at a pH in the range between about 5.5 and about 8.0.

Claim 14

The process of claim 10 wherein the precipitation is carried out at a temperature between about 50° C. and about 85° C.

Claim 15

The process of claim 10 wherein the aging pH is in the range between about 9.0 and about 11.0.

Claim 16

The process of claim 10 whereen step (d) is carried out at a pH in the range between about 4.0 and about 6.0.

Claim 17

The process of claim 10 wherein said salts in step (d) are salts of cobalt and molybdenum.

Claim 18

The process of claim 15 wherein in step (d), a phosphorus-contain compound in an amount of from about 0.2 to about 1.5 moles of phosphorus per mole of molybdenum is added.

Claim 19

The process of claim 15 wherein said catalyst contains from about 2.5% w to about 4% w cobalt and from about 10% w to about 14% w molybdenum.

Claim 20

The process of claim 10 wherein in step (d), a phosphorus-containing compound in an amount of about 0.2 to about 1.5 moles of phosphorus per mole of heavy metal is added.

Claim 21

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above abpit 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) precipitating an aqueous solution of one or more aluminum salts(s) by adjusting the pH to a range between about 5.5 and about 10.0 at a temperature in the range between about 20° C. and about 90° C., (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 8.0 to about 12.0, (c) washing the precipitate, (d) mixing a dry, water-soluble salt of a heavy metal selected from the group consisting of molybdenum, tungsten and mixtures thereof, and a mixture of a dry, water-soluble cobalt salt and a phosphorus-containing compound with the precipitate at a pH in the range between about 4.0 and about 8.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 1% w to about 5% w cobalt and from about 8% w to about 18% w molybdenum or about 10% w to about 32% w tungsten, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 22

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above abpit 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) precipitating an aqueous solution of one or more aluminum salts(s) by adjusting the pH to a range between about 5.5 and about 10.0 at a temperature in the range between about 20° C. and about 90° C., (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 8.0 to about 12.0, (c) washing the precipitate, (d) mixing a dry, water-soluble salt of a heavy metal selected from the group consisting of molybdenum, tungsten and mixtures thereof, and a mixture of a dry, water-soluble cobalt salt and a phosphorus-containing compound with the precipitate at a pH in the range between about 4.0 and about 8.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 1% w to about 5% w cobalt and from about 8% w to about 18% w molybdenum or about 10% w to about 32% w tungsten, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 23

The process of claim 19 wherein the precipitation is carried out at a pH in the range between about 5.5 and about 8.0.

Claim 24

The process of claim 19 wherein the precipitation is carried out at a temperature between about 50° C. and about 85° C.

Claim 25

The process of claim 19 whereen the aging pH is in the range between about 9.0 and about 11.0.

Claim 26

The process of claim 19 wherein step (d) is carried out at a pH in the range between about 4.0 and about 6.0.

Claim 27

The process of claim 19 wherein said salts in step (d) are salts of cobalt and molybdenum.

Claim 28

The process of claim 24 wherein the amount of phosphorus-containing compound in step (d) is from about 0.2 to about 1.5 moles of phosphorus per mole of molybdenum.

Claim 29

The process of claim 24 wherein said catalyst contains from about 2.5% w to about 4% w cobalt and from about 8% w to about 18% w molybdenum.

Claim 30

The process of claim 19 wherein the amount of phosphorus-containing compound in step (d) is from about 0.2 to about 1.5 moles of phosphorus per mole of heavy metal.

Claim 31

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) titrating an aqueous solution of an acid aluminum salt and an aqueous solution of a basic aluminum compound at a pH in the range between about 5.5 and about 10.0 and a temperature in the range between about 20° C. and about 90° C., thereby forming a precipitate, (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 8.0 to about 12.0, (c) washing the precipitate, (d) mixing a dry, water-soluble salt of a heavy metal selected from the group consisting of molybdenum, tungsten and mixtures thereof, and a mixture of a dry, water-soluble cobalt salt and a phosphorus-containing compound with the precipitate at a pH in the range between about 4.0 and about 8.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 1% w to about 5% w cobalt and from about 8% w to about 18% w molybdenum or about 10% w to about 32% w tungsten, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 32

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) titrating an aqueous solution of an acid aluminum salt and an aqueous solution of a basic aluminum compound at a pH in the range between about 5.5 and about 10.0 and a temperature in the range between about 20° C. and about 90° C., thereby forming a precipitate, (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 8.0 to about 12.0, (c) washing the precipitate, (d) mixing a dry, water-soluble salt of a heavy metal selected from the group consisting of molybdenum, tungsten and mixtures thereof, and a mixture of a dry, water-soluble cobalt salt and a phosphorus-containing compound with the precipitate at a pH in the range between about 4.0 and about 8.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 1% w to about 5% w cobalt and from about 8% w to about 18% w molybdenum or about 10% w to about 32% w tungsten, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 33

The process of claim 28 wherein the precipitation is carried out at a pH in the range between about 5.5 and about 8.0.

Claim 34

The process of claim 28 wherein the precipitation is carried out at a temperature between about 50° C. and about 85° C.

Claim 35

The process of claim 28 wherein the aging pH is in the range between about 9.0 and about 11.0.

Claim 36

The process of claim 28 wherein step (d) is carried out at a pH in the range between about 4.0 and about 6.0.

Claim 37

The process of claim 28 wherein said salts in step (d) are salts of cobalt and molybdenum.

Claim 38

The process of claim 33 wherein the amount of phosphorus-containing compound in step (d) is from about 0.2 to about 1.5 moles of phosphorus per mole of molybdenum.

Claim 39

The process of claim 33 wherein said catalyst contains from about 2.5% w to about 4% w cobalt and from about 8% w to about 18% w molybdenum.

Claim 40

The process of claim 28 wherein the amount of phosphorus-containing compound in step (d) is from about 0.2 to about 1.5 moles of phosphorus per mole of heavy metal.

Claim 41

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) titrating an aqueous solution of an acid aluminum salt selected from the group consisting of aluminum sulfate, aluminum nitrate and aluminum chloride, and an aqueous solution of a basic aluminum compound selected from the group consisting of sodium aluminate and potassium aluminate, at a pH in the range between about 5.5 and about 8.0 and a temperature in the range between about 20° C. and about 90° C., thereby forming a precipitate, (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 9.0 to about 11.0, (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble cobalt salts and molybdate or dimolybdate salts at a pH in the range between about 4.0 and about 5.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 2.5% w to about 4.0% w cobalt and from about 10% w to about 10% w molybdenum, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 42

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) titrating an aqueous solution of an acid aluminum salt selected from the group consisting of aluminum sulfate, aluminum nitrate and aluminum chloride, and an aqueous solution of a basic aluminum compound selected from the group consisting of sodium aluminate and potassium aluminate, at a pH in the range between about 5.5 and about 8.0 and a temperature in the range between about 20° C. and about 90° C., thereby forming a precipitate, (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 9.0 to about 11.0, (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble cobalt salts and molybdate or dimolybdate salts at a pH in the range between about 4.0 and about 5.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 2.5% w to about 4.0% w cobalt and from about 10% w to about 10% w molybdenum, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 43

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) titrating an aqueous solution of an acid aluminum salt selecting from the group consisting of aluminum sulfate, aluminum nitrate and aluminum chloride, and an aqueous solution of a basic aluminum compound selected from the group consisting of sodium aluminate and aluminum sulfate, at a pH in the range between about 5.5 and about 8.0 and a temperature in the range between about 20° C. and about 90° C., thereby forming a precipitate, (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 9.0 to about 11.0, (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble cobalt salts and molybdate and dimolybdate salts, and phosphoric acid in an amount of from about 0.2 to about 1.5 moles of phosphorus per mole of molybdenum, at a pH in the range between about 4.0 and about 6.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 2.5% w to about 4.0% w cobalt and from about 10% w to about 14% w molybdenum, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 44

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) titrating an aqueous solution of an acid aluminum salt selecting from the group consisting of aluminum sulfate, aluminum nitrate and aluminum chloride, and an aqueous solution of a basic aluminum compound selected from the group consisting of sodium aluminate and aluminum sulfate, at a pH in the range between about 5.5 and about 8.0 and a temperature in the range between about 20° C. and about 90° C., thereby forming a precipitate, (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 9.0 to about 11.0, (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble cobalt salts and molybdate and dimolybdate salts, and phosphoric acid in an amount of from about 0.2 to about 1.5 moles of phosphorus per mole of molybdenum, at a pH in the range between about 4.0 and about 6.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 2.5% w to about 4.0% w cobalt and from about 10% w to about 14% w molybdenum, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 45

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) precipitating an aqueous solution of an acid aluminum salt selected from the group consisting of aluminum sulfate, aluminum nitrate and aluminum chloride, with an aqueous solution of a base at a pH in the range between about 5.5 and about 8.0 and a temperature in the range between about 20° C. and about 90° C., (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 9.0 to about 11.0. (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble cobalt salts and molybdate or dimolybdate salts at a pH in the range between about 4.0 and about 6.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 2.5% w to about 4.0% w cobalt and from about 10% w to about 14% w molybdenum, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.,

Claim 46

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) precipitating an aqueous solution of an acid aluminum salt selected from the group consisting of aluminum sulfate, aluminum nitrate and aluminum chloride, with an aqueous solution of a base at a pH in the range between about 5.5 and about 8.0 and a temperature in the range between about 20° C. and about 90° C., (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 9.0 to about 11.0. (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble cobalt salts and molybdate or dimolybdate salts at a pH in the range between about 4.0 and about 6.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 2.5% w to about 4.0% w cobalt and from about 10% w to about 14% w molybdenum, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.,

Claim 47

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) precipitating an aqueous solution of an acid with an aqueous solution of a basic aluminum compound selected from the group consisting of sodium aluminate and potassium aluminate, at a pH in the range between about 5.5 and about 8.0 and a temperature in the range between about 20° C. and about 90° C., (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minute at a pH ranging from about 9.0 to about 11.0, (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble cobalt salts and molybdate or dimolybdate salts at a pH in the range between about 4.0 and about 6.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 2.5% w to about 4.0%2w cobalt and from about 10% w to about 14% w molybdenum, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 48

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) precipitating an aqueous solution of an acid with an aqueous solution of a basic aluminum compound selected from the group consisting of sodium aluminate and potassium aluminate, at a pH in the range between about 5.5 and about 8.0 and a temperature in the range between about 20° C. and about 90° C., (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minute at a pH ranging from about 9.0 to about 11.0, (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble cobalt salts and molybdate or dimolybdate salts at a pH in the range between about 4.0 and about 6.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 2.5% w to about 4.0%2w cobalt and from about 10% w to about 14% w molybdenum, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 49

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) precipitating an aqueous solution of an acid aluminum salt selected from the group consisting of aluminum sulfate, aluminum nitrate and aluminum chloride, with an aqueous solution of a base at a pH in the range between about 5.5 and about 8.0 and a temperature in the range between about 20° C. and about 90° C., (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 9.0 to about 11.0, (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble cobalt salts and molybdate or dimolybdate salts, and phosphoric acid in an amount of from about 0.2 to about 1.5 moles of phosphorus per mole of molybdenum, at a pH in the range between about 4.0 and about 6.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 2.5% w to about 4.0% w cobalt and from about 10% w to about 14% w molybdenum, (e) extruding the product to step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 50

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) precipitating an aqueous solution of an acid aluminum salt selected from the group consisting of aluminum sulfate, aluminum nitrate and aluminum chloride, with an aqueous solution of a base at a pH in the range between about 5.5 and about 8.0 and a temperature in the range between about 20° C. and about 90° C., (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 9.0 to about 11.0, (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble cobalt salts and molybdate or dimolybdate salts, and phosphoric acid in an amount of from about 0.2 to about 1.5 moles of phosphorus per mole of molybdenum, at a pH in the range between about 4.0 and about 6.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 2.5% w to about 4.0% w cobalt and from about 10% w to about 14% w molybdenum, (e) extruding the product to step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 51

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) precipitating an aqueous solution of an acid with an aqueous solution of a basic aluminum compound selected from the group consisting of sodium aluminate and potassium aluminate, at a pH in the range between about 5.5 and about 8.0 and a temperature in the range between about 20° C. and about 90° C., (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 9.0 to about 11.0, (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble cobalt salts and molybdate or dimolybdate salts, and phosphoric acid in an amount of from about 0.2 to about 1.5 moles of phosphorus per mole of molybdenum, at a pH in the range between about 4.0 and about 6.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 2.5% w to about 4.0% w cobalt and from about 100% w to about 14% w molybdenum, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.

Claim 52

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300° F. to about 850° F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m 2 /g and at least about 80% of the pore volume in pores having diameters less than about 70 Å, wherein said catalyst is prepared by a process which comprises: (a) precipitating an aqueous solution of an acid with an aqueous solution of a basic aluminum compound selected from the group consisting of sodium aluminate and potassium aluminate, at a pH in the range between about 5.5 and about 8.0 and a temperature in the range between about 20° C. and about 90° C., (b) aging the precipitate at a temperature ranging from about 20° C. to about 90° C. for at least about 15 minutes at a pH ranging from about 9.0 to about 11.0, (c) washing the precipitate, (d) mixing the precipitate with dry, water-soluble cobalt salts and molybdate or dimolybdate salts, and phosphoric acid in an amount of from about 0.2 to about 1.5 moles of phosphorus per mole of molybdenum, at a pH in the range between about 4.0 and about 6.0 and a temperature in the range between about 25° C. and about 100° C. to yield a final catalyst having from about 2.5% w to about 4.0% w cobalt and from about 100% w to about 14% w molybdenum, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300° C. to about 900° C.