Cracking catalyst

Claim 2

A modified cracking catalyst composition which comprises zeolite cracking catalyst having in combination therewith a containing silica-alumina amount of a treating agent which comprises (A) at least one of elemental antimony and compounds of antimony and (B) at least one of elemental tin and compounds of tin.

Claim 3

A composition in accordance with claim 1 wherein said cracking catalyst is a used cracking catalyst having a deactivating amount of one or more of the metals nickel, iron and vanadium deposited thereon.

Claim 4

A composition in accordance with claim 1 wherein said cracking catalyst is an unused cracking catalyst.

Claim 5

A composition in accordance with claim 1 wherein said cracking catalyst is a mixture of used and unused cracking catalyst.

Claim 6

A composition in accordance with claim 1 wherein each of (A) and (B) is present in an amount in the range of from about 0.005 to about 8 weight percent, said percentage being based on the weight of said cracking catalyst prior to addition of (A) and (B).

Claim 7

A composition in accordance with claim 5 wherein the weight ratio of antimony to tin is in the range of from 0.001:1 to 1000:1.

Claim 8

A composition in accordance with claim 33 wherein (A) is derived from an antimony thiophosphate and (B) is derived from a dihydrocarbyltin oxide.

Claim 9

A composition in accordance with claim 1 wherein (A) is derived from antimony tris(O,O-dipropyl dithiophosphate) and (B) is derived from dibutyltin oxide.

Claim 10

A composition in accordance with claim 1 wherein the amount of antimony in (A) is in the range of about 0.005 to about 2 weight percent, and the amount of tin in (B) is in the range of about 0.0005 to about 2 weight percent, the weight percentages being based on the weight of said cracking catalyst prior to being contacted with (A) and (B).

Claim 11

A composition in accordance with claim 1 wherein the amount of antimony in (A) is in the range of about 0.01 to about 1, and the amount of tin in (B) is in the range of about 0.001 to about 1 weight percent, the weight percentages being based on the weight of said cracking catalyst prior to being contacted with (A) and (B).

Claim 12

A composition in accordance with claim 1 wherein the amount of antimony in (A) is in the range of about 0.05 to about 0.8 weight percent, and the amount of tin in (B) is in the range of about 0.001 to about 0.8 weight percent, the weight percentages being based on the weight of said cracking catalyst prior to being contacted with (A) and (B).

Claim 13

A composition in accordance with claims 9, 10, or 11 wherein the weight ratio of antimony in (A) to tin in (B) is in the range of 0.01:1 to 100:1.

Claim 14

A composition in accordance with claims 9, 10, or 11 wherein the weight ratio of antimony in (A) to tin in (B) is in the range of 0.05:1 to 50:1.

Claim 15

A composition in accordance with claim 13 wherein said compound of antimony is at least one of the group consisting of antimony oxides, antimony sulfides, antimony selenides, antimony tellurides, antimony sulfates, antimonic acids, antimony halides, antimonyl halides, antimonides, antimony carboxylates, antimony thiocarboxylates, antimony thiocarbonates, antimony carbonates, trihydrocarbylantimony compounds, trihydrocarbylantimony oxides, antimony salts of phenolic compounds, antimony sulfonates, antimony carbamates, antimony thiocarbamates, antimony phosphites, antimony phosphates and antimony thiophosphates, and said compound of tin is at least one of the group consisting of tin oxides, tin sulfides, tin selenides, tin tellurides, tin sulfates, stannic acids, tin halides, tin oxyhalides, tin carboxylates, tin thiocarboxylates, tin thiocarbonates, tin carbonates, tetrahydrocarbyltin compounds, dihydrocarbyltin oxides, dihydrocarbyltin bis(hydrocarbyl mercaptide)s, tin salts of phenolic compounds, tin salts of thiophenolic compounds, tin sulfonates, tin carbamates, tin thiocarbamates, tin phosphites, tin phosphates, tin thiophosphates and dihydrocarbyltin bis(O,O-dihydrocarbyl thiophosphate)s.

Claim 16

A composition in accordance with claims 9, 10, or 11 wherein the weight ratio of antimony in (A) to tin in (B) is in the range of 5:1 to 15:1.

Claim 17

A composition in accordance with claims 9, 10, or 11 wherein the weight ratio of antimony in (A) to tin in (B) is in the range of 2:1 to 20:1.

Claim 18

A composition in accordance with claim 16 wherein said compound of antimony is at least one of the group consisting of antimony oxides, antimony sulfides, antimony selenides, antimony tellurides, antimony sulfates, antimonic acids, antimony halides, antimonyl halides, antimonides, antimony carboxylates, antimony thiocarboxylates, antimony thiocarbonates, antimony carbonates, trihydrocarbylantimony compounds, trihydrocarbylantimony oxides, antimony salts of phenolic compounds, antimony sulfonates, antimony carbamates, antimony thiocarbamates, antimony phosphites, antimony phosphates and antimony thiophosphates, and said compound of tin is at least one of the group consisting of tin oxides, tin sulfides, tin selenides, tin tellurides, tin sulfates, stannic acids, tin halides, tin oxyhalides, tin carboxylates, tin thiocarboxylates, tin thiocarbonates, tin carbonates, tetrahydrocarbyltin compounds, dihydrocarbyltin oxides, dihydrocarbyltin bis(hydrocarbyl mercaptide)s, tin salts of phenolic compounds, tin salts of thiophenolic compounds, tin sulfonates, tin carbamates, tin thiocarbamates, tin phosphites, tin phosphates, tin thiophosphates and dihydrocarbyltin bis(O,O-dihydrocarbyl thiophosphate)s.

Claim 19

A composition in accordance with claim 16 wherein (A) comprises antimony tris(O,O-dipropyl phosphorodithioate) and wherein (B) comprises dibutyltin oxide.

Claim 20

A modified cracking catalyst composition which comprises zeolite cracking catalyst having deposited thereon a detrimental amount of at least one contaminating metal selected from the group consisting of nickel, iron, copper, cobalt and vanadium; and a treating agent comprising (A) at least one of elemental antimony and compounds of antimony and (B) at least one of elemental tin and compounds of tin, with the weight ratio of antimony in (A) to tin in (B) being such as to provide a passivation of said at least one contaminating metal on said cracking catalyst greater than the sum of the passivating effects of (A) and (B) individually.

Claim 21

A modified cracking catalyst composition which comprises zeolite cracking catalyst having deposited thereon a detrimental amount of at least one contaminating metal selected from the group consisting of nickel, iron, copper, cobalt and vanadium; and a treating agent comprising (A) at least one of elemental antimony and compounds of antimony and (B) at least one of elemental tin and compounds of tin, with the weight ratio of antimony in (A) to tin in (B) being such as to provide a passivation of said at least one contaminating metal on said cracking catalyst greater than the sum of the passivating effects of (A) and (B) individually.

Claim 22

A composition in accordance with claim 19 wherein (A) and (B) are present in amounts to provide at least about 0.0001 weight percent antimony and at least about 0.0001 weight percent tin, the weight percentages being based on the weight of the cracking catalyst composition without (A) and (B).

Claim 23

A composition in accordance with claim 19 wherein the amount of antimony in (A) is in the range of about 0.005 to about 2 weight percent, and the amount of tin in (B) is in the range of about 0.0005 to about 2 weight percent, the weight percentages being based on the weight of the cracking catalyst composition without (A) and (B).

Claim 24

A composition in accordance with claim 19 wherein the amount of antimony in (A) is in the range of about 0.01 to about 1 weight percent, and the amount of tin in (B) is in the range of about 0.001 to about 1 weight percent, the weight percentages being based on the weight of the cracking catalyst composition without (A) and (B).

Claim 25

A composition in accordance with claim 19 wherein the amount of antimony in (A) is in the range of about 0.05 to about 0.8 weight percent, and the amount of tin in (B) is in the range of about 0.001 to about 0.8 weight percent, the weight percentages being based on the weight of the cracking catalyst composition without (A) and (B).

Claim 26

A composition in accordance with claims 21, 22 or 23 wherein the weight ratio of antimony in (A) to tin in (B) is in the range of 0.01:1 to 100:1.

Claim 27

A composition in accordance with claims 21, 22 or 23 wherein the weight ratio of antimony in (A) to tin in (B) is in the range of 0.05 to 50:1.

Claim 28

A composition in accordance with claims 53, 54 or 55 wherein the weight ratio of antimony in (A) to tin in (B) is in the range of 2:1 to 20:1.

Claim 29

A composition in accordance with claims 21, 22 or 23 wherein the weight ratio of antimony in (A) to tin in (B) is in the range of 5:1 to 15:1.

Claim 30

A composition in accordance with claim 27 wherein said compound of antimony is at least one of the group consisting of antimony oxides, antimony sulfides, antimony selenides, antimony tellurides, antimony sulfates, antimonic acids, antimony halides, antimonyl halides, antimonides, antimony carboxylates, antimony thiocarboxylates, antimony thiocarbonates, antimony carbonates, trihydrocarbylantimony compounds, trihydrocarbylantimony oxides, antimony salts of phenolic compounds, antimony sulfonates, antimony carbamates, antimony thiocarbamates, antimony phosphites, antimony phosphates and antimony thiophosphates, and said compound of tin is at least one of the group consisting of tin oxides, tin sulfides, tin selenides, tin tellurides, tin sulfates, stannic acids, tin halides, tin oxyhalides, tin carboxylates, tin thiocarboxylates, tin thiocarbonates, tin carbonates, tetrahydrocarbyltin compounds, dihydrocarbyltin oxides, dihydrocarbyltin bis(hydrocarbyl mercaptide)s, tin salts of phenolic compounds, tin salts of thiophenolic compounds, tin sulfonates, tin carbamates, tin thiocarbamates, tin phosphites, tin phosphates, tin thiophosphates and dihydrocarbyltin bis(O,O-dihydrocarbyl thiophosphate)s.

Claim 31

A composition in accordance with claim 27 wherein (A) comprises antimony tris(O,O-dipropyl phosphorodithioate) and wherein (B) comprises dibutyltin oxide.

Claim 32

A composition in accordance with claim 27 wherein (A) comprises antimony tris(O,O-dipropyl phosphorodithioate) and wherein (B) comprises dibutyltin bis(isooctyl mercaptoacetate). PG,51

Claim 33

A composition in accordance with claim 13 wherein (A) comprises antimony tris(O,O-dipropyl phosphorodithioate) and wherein (B) comprises stannic O,O-dipropyl phosphorodithioate.

Claim 34

A composition in accordance with claim 25 wherein (A) comprises antimony tris(O,O-dipropyl phosphorodithioate) and wherein (B) comprises stannic O,O-dipropyl phosphorodithioate.

Claim 35

A cracking catalyst composition which comprises a zeolite-containing silica-alumina cracking catalyst having in combination therewith (A) antimony, and (B) tin, wherein the amounts of antimony and tin are such as to have a passivating effect upon contaminating metals selected from the group consisting of nickel, iron, copper, cobalt and vanadium, and wherein the antimony has been added to said cracking catalyst in the form of at least one organic antimony compound, and wherein the tin has been added to said cracking catalyst in the form of at least one organic tin compound.

Claim 36

A cracking catalyst composition which comprises a zeolite-containing silica-alumina cracking catalyst having in combination therewith (A) antimony, and (B) tin, wherein the amounts of antimony and tin are such as to have a passivating effect upon contaminating metals selected from the group consisting of nickel, iron, copper, cobalt and vanadium, and wherein the antimony has been added to said cracking catalyst in the form of at least one organic antimony compound, and wherein the tin has been added to said cracking catalyst in the form of at least one organic tin compound.

Claim 37

A composition according to claim 33 wherein said organic antimony compounds and said organic tin compounds contain about 3 to about 54 carbon atoms per molecule.

Claim 38

A composition according to claim 34 wherein each said organic antimony compound is selected from the group consisting of antimony carboxylates, antimony thiocarboxylates, antimony thiocarbonates, antimony carbonates, trihydrocarbyl antimony compounds, antimony salts of phenolic compounds, antimony sulfonates, antimony carbonates, antimony thiocarbamates, antimony phosphites, antimony phosphates, and antimony thiophosphates.

Claim 39

A composition according to claim 34 wherein each said organic tin compound is selected from the group consisting of tin carboxylates, tin thiocarboxylates, dihydrocarbyltin bis (hydrocarbyl mercaptoalkanoate)s, tin thiocarbonates, tin carbonates, tetrahydrocarbyltin compounds, dihydrocarbyltin oxides, dihydrocarbyltin bis (hydrocarbyl mercaptide)s, tin salts of phenolic compounds, tin sulfonates, tin carbamates, tin thiocarbamates, tin phosphites, tin phosphates, tin thiophosphates, and dihydrocarbyltin bis (o,o-dihydrocarbyl thiophosphate)s.

Claim 40

A composition according to claim 35 wherein each said organic tin compound is selected from the group consisting of tin carboxylates, tin thiocarboxylates, dihydrocarbyltin bis (hydrocarbyl mercaptoalkanoate)s, tin thiocarbonates, tin carbonates, tetrahydrocarbyltin compounds, dihydrocarbyltin oxides, dihydrocarbyltin bis (hydrocarbyl mercaptide)s, tin salts of phenolic compounds, tin sulfonates, tin carbamates, tin thiocarbamates, tin phosphites, tin phosphates, tin thiophosphates, and dihydrocarbyltin bis (o,o-dihydrocarbyl thiophosphate)s.

Claim 41

A composition according to claim 37 wherein the amount of antimony and the amount of tin are each in the range of about 0.0001 to about 8 weight percent, the weight percent being based on the weight of said cracking catalyst prior to the addition of the antimony and tin.

Claim 42

A composition according to claim 38 wherein the weight ratio of antimony to tin is in the range of from 0.001:1 to 1000:1.

Claim 43

A composition according to claim 39 wherein the amount of antimony and the amount of tin are in the range of about 0.005 to about 2 weight percent, the weight percent being based on the weight of said cracking catalyst prior to the addition of the antimony and tin.

Claim 44

A composition according to claim 40 wherein the amount of antimony is in the range of about 0.01 to about 0.5 weight percent and the amount of tin is in the range of about 0.001 to about 0.5 weight percent, said weight percents of both antimony and tin being based on the weight of the cracking catalyst prior to the addition of said antimony and tin.

Claim 45

A composition according to claim 41 wherein the weight ratio of antimony to tin is in the range of about 0.1/1 to about 10/1.

Claim 46

A composition according to claim 42 wherein the antimony has been added to said cracking catalyst as at least one antimony thiophosphate and the tin has been added to said cracking catalyst as at least one dihydrocarbyltin oxide.

Claim 47

A composition according to claim 43 wherein said cracking catalyst comprises silica-alumina.

Claim 48

A composition according to claim 42 wherein said cracking catalyst contains at least one contaminating metal selected from the group consisting of nickel, iron, copper, cobalt, and vanadium and the total of such contaminating metals is such that the activity of the cracking catalyst is less than that of the catalyst containing essentially none of said contaminating metals.

Claim 49

A composition according to claim 42 wherein the antimony has been added to said cracking catalyst as antimony tris(o,o-dipropyl dithiophosphate) and the tin has been added to said cracking catalyst as dibutyltin oxide.

Claim 50

A composition according to claim 46 wherein said cracking catalyst contains at least one contaminating metal selected from the group consisting of nickel, iron, copper, cobalt, and vanadium and the total of such contaminating metals is such that the activity of the cracking catalyst is less than if said contaminating metals weren't present.

Claim 51

A composition according to claim 47 wherein the weight ratio of antimony to tin is about 1/1.

Claim 52

A composition according to claim 42 wherein the antimony has been added to said cracking catalyst as at least one antimony thiophosphate.

Claim 53

A composition according to claim 49 wherein the tin has been added to said cracking catalyst as at least one dihydrocarbyltin bis (hydrocarbyl mercaptoacetate).

Claim 54

A composition according to claim 50 wherein the antimony has been added to said cracking catalyst as antimony tris(o,o-dipropyl phosphorodithioate) and the tin has been added to said cracking catalyst as dibutyltin bis (isooctyl mercaptoacetate).

Claim 55

A composition according to claim 49 wherein the tin has been added to said cracking catalyst as at least one tin thiophosphate.

Claim 56

A composition according to claim 52 wherein the antimony has been added to said cracking catalyst as antimony tris(o,o-dipropyl phosphorodithioate).

Claim 57

A composition according to claim 53 wherein the tin has been added to said cracking catalyst as stannic o,o-dipropyl phosphorodithioate.

Claim 58

A composition according to claim 53 wherein the tin has been added to said cracking catalyst as stannous o,o-dipropyl phosphorodithioate.

Claim 59

A cracking catalyst composition according to claim 33 wherein the weight ratio of antimony to tin is such that the passivating effect thereof on contaminating metals selected from the group consisting of nickel, iron, copper, cobalt, and vanadium is greater than the sum of the individual passivating effects that would be provided by said antimony and said tin.

Claim 60

A cracking catalyst composition according to claim 56 wherein said cracking catalyst comprises a zeolite containing amorphous silica-alumina.

Claim 61

A cracking catalyst composition according to claim 33 wherein said cracking catalyst comprises an aluminosilicate zeolite-containing cracking catalyst.

Claim 62

A cracking catalyst composition according to claim 40 wherein said cracking catalyst comprises an aluminosilicate zeolite-containing cracking catalyst.