Cracking catalyst

Claim 2

A process for passivating at least one contaminating metal from the group consisting of nickel, iron, copper, cobalt and vanadium on a cracking catalyst which comprises contacting said cracking catalyst with (A) at least one of elemental antimony and compounds of antimony and (B) at least one of elemental tin and compounds of tin, whereby there is added to said cracking catalyst a modifying amount of each of (A) and (B) with the weight ratio of antimony in (A) to the tin in (B) being such as to provide a passivation of said contaminating metals on said cracking catalyst greater than the sum of the passivation effects of each of (A) and (B) individually.

Claim 3

A process in accordance with claim 1 wherein each of (A) and (B) is added to said cracking catalyst in an amount 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 said cracking catalyst prior to being contacted with (A) and (B).

Claim 4

A process 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 5

A process in accordance with claim 1 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 said cracking catalyst prior to being contacted with (A) and (B).

Claim 6

A process 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 7

A process in accordance with claims 3, 4 or 5 wherein said weight ratio of antimony in (A) to tin in (B) is in the range of 0.001:1 to 1000:1.

Claim 8

A process in accordance with claims 3, 4 or 5 wherein said weight ratio of antimony in (A) to tin in (B) is in the range of 0.01:1 to 100:1.

Claim 9

A process in accordance with claims 3, 4 or 5 wherein said weight ratio of antimony in (A) to tin in (B) is in the range of 0.05:1 to 50:1.

Claim 10

A process in accordance with claims 3, 4 or 5 wherein said weight ratio of antimony in (A) to tin in (B) is in the range of 2:1 to 20:1.

Claim 11

A process in accordance with claims 3, 4 or 5 wherein said weight ratio of antimony in (A) to tin in (B) is in the range of 5:1 to 15:1.

Claim 12

A process in accordance with claim 10 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 13

A process in accordance with claim 10 wherein (A) comprises antimony tris(O,O-dipropyl phosphorodithioate) and wherein (B) comprises dibutyltin oxide.

Claim 14

A process in accordance with claim 10 wherein (A) comprises antimony tris(O,O-dipropyl phosphorodithioate) and wherein (B) comprises dibutyltin bis(isooctyl mercaptoacetate).

Claim 15

A process in accordance with claim 1 wherein said cracking catalyst is a used cracking catalyst having deposited thereon a detrimental amount of at least one metal of the group consisting of nickel, iron and vanadium.

Claim 16

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

Claim 17

A process for passivating metals selected from the group consisting of nickel, iron and vanadium on a cracking catalyst which comprises contacting said cracking catalyst with (A) at least one of elemental antimony and compounds of antimony and (B) at least one of elemental tin and compounds of tin whereby there is added to said cracking catalyst a modifying amount of each of (A) and (B).

Claim 18

A process for passivating metals selected from the group consisting of nickel, iron and vanadium on a cracking catalyst which comprises contacting said cracking catalyst with (A) at least one of elemental antimony and compounds of antimony and (B) at least one of elemental tin and compounds of tin whereby there is added to said cracking catalyst a modifying amount of each of (A) and (B).

Claim 19

A process in accordance with claim 16 wherein each of (A) and (B) is added in an amount in the range of from about 0.005 to about 8 weight percent, said weight percentage being based on the weight of said cracking catalyst prior to being contacted with (A) and (B).

Claim 20

A process in accordance with claim 17 wherein the weight ratio of antimony to tin is in the range of from 0.001:1 to 1000:1.

Claim 21

A process in accordance with claim 16 wherein each of (A) and (B) is added to said cracking catalyst in an amount 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 said cracking catalyst prior to being contacted with (A) and (B).

Claim 22

A process in accordance with claim 16 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 0.005 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 23

A process in accordance with claim 16 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 said cracking catalyst prior to being contacted with (A) and (B).

Claim 24

A process in accordance with claim 16 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 25

A process in accordance with claims 20, 21 or 22 wherein the weight ratio of antimony in (A) to tin in (B) is in the range of 0.001:1 to 1000:1.

Claim 26

A process in accordance with claims 20, 21 or 22 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 process in accordance with claims 20, 21 or 22 wherein the weight ratio of antimony in (A) to tin in (B) is in the range of 0.05:1 to 50:1.

Claim 28

A process in accordance with claims 20, 21 or 22 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 process in accordance with claims 20, 21 or 22 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 process according to 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, dihydrocarbyltin bis(hydrocarbyl mercaptoalkanoate)s, 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 process according to claim 16 wherein said cracking catalyst is a used cracking catalyst.

Claim 32

A process in accordance with claim 16 wherein (A) is derived from an antimony thiophosphate and (B) is derived from a dihydrocarbyltin oxide.

Claim 33

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

Claim 34

A process in accordance with claim 16 wherein (A) comprises antimony tris(O,O-dipropyl phosphorodithioate) and (B) comprises dibutyltin bis(isooctyl mercaptoacetate).

Claim 35

A process in accordance with claim 10 wherein (A) comprises antimony tris(O,O-dipropyl phosphorodithioate) and wherein (B) comprises stannic O,O-dipropyl phosphorodithioate.

Claim 36

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