Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
70 words
A catalyst comprising a platinum group component, a phosphorous component and a porous support material, said catalyst being made by the method of (a) compositing a platinum group component with a porous support material, (b) contacting the composite from step (a) with phosphorus or a compound of phosphorus at a temperature less than 700° F. so that the phosphorus to platinum group component atomic ratio is greater than 0.5, and
Claim 2
Dependent Claim
70 words
A catalyst comprising a platinum group component, a phosphorous component and a porous support material, said catalyst being made by the method of (a) compositing a platinum group component with a porous support material, (b) contacting the composite from step (a) with phosphorus or a compound of phosphorus at a temperature less than 700° F. so that the phosphorus to platinum group component atomic ratio is greater than 0.5, and
Claim 3
Dependent Claim
22 words
(c) then reducing the composite from step (b) to decrease the oxidation state of a catalyst component without an intermediate oxidation step.
Claim 4
Dependent Claim
22 words
(c) then reducing the composite from step (b) to decrease the oxidation state of a catalyst component without an intermediate oxidation step.
Claim 5
Dependent Claim
12 words
The catalyst of claim 1 wherein the platinum group component is platinum.
Claim 6
Dependent Claim
15 words
The catalyst of claim 2 which comprises about 0.01 to about 5 wt. % platinum.
Claim 7
Dependent Claim
15 words
The catalyst of claim 1 which comprises about 0.01 to about 5 wt. % phosphorus.
Claim 8
Dependent Claim
12 words
The catalyst of claim 1 wherein the porous support material is alumina.
Claim 9
Dependent Claim
11 words
The catalyst of claim 1 which also comprises a halogen component.
Claim 10
Dependent Claim
13 words
The catalyst of claim 6 wherein the halogen component is a chlorine component.
Claim 11
Dependent Claim
15 words
The catalyst of claim 7 which comprises about 0.01 to about 15 wt. % chlorine.
Claim 12
Dependent Claim
11 words
The catalyst of claim 1 which also comprises a sulfur component.
Claim 13
Dependent Claim
21 words
The catalyst of claim 9 wherein the catalyst comprises, on an elemental basis, about 0.01 to about 10 wt. % sulfur.
Claim 14
Independent Claim
80 words
A method for making a catalyst which comprises the steps of (a) compositing a platinum group component with a pourous support material, (b) contacting the composite from step (a) with phosphorus or a compound of phosphorus at a temperature less than 700° F. so that the phosphorus to platinum group component atomic ratio is greater than 0.5, and (c) then reducing the composite from step (b) to decrease the oxidation state of a catalyst component without an intermediate oxidation step.
Claim 15
Independent Claim
80 words
A method for making a catalyst which comprises the steps of (a) compositing a platinum group component with a pourous support material, (b) contacting the composite from step (a) with phosphorus or a compound of phosphorus at a temperature less than 700° F. so that the phosphorus to platinum group component atomic ratio is greater than 0.5, and (c) then reducing the composite from step (b) to decrease the oxidation state of a catalyst component without an intermediate oxidation step.
Claim 16
Dependent Claim
14 words
The method of claim 11 wherein the platinum group component is a platinum component.
Claim 17
Dependent Claim
12 words
The method of claim 12 wherein the platinum component is chloroplatinic acid.
Claim 18
Dependent Claim
19 words
The method of claim 13 wherein the porous support material is commingled with an aqueous solution of chloroplatinic acid.
Claim 19
Dependent Claim
12 words
The method of claim 11 wherein the porous support material is alumina.
Claim 20
Dependent Claim
11 words
The method of claim 15 wherein the alumina contains combined halogen.
Claim 21
Dependent Claim
16 words
The method of claim 11 wherein the composite from step (a) is oxidized before step (b).
Claim 22
Dependent Claim
16 words
The method of claim 11 wherein the composite from step (a) is reduced before step (b).
Claim 23
Dependent Claim
18 words
The method of claim 11 wherein the composite from step (a) is oxidized then reduced from step (b).
Claim 24
Dependent Claim
20 words
The method of claim 11 wherein the porous support material and platinum group component composite is contacted with elemental phosphorus.
Claim 25
Dependent Claim
22 words
The method of claim 11 wherein the porous support material and platinum group component composite is contacted with a compound of phosphorus.
Claim 26
Dependent Claim
12 words
The method of claim 21 wherein the phosphorous compound is hypophosphorous acid.
Claim 27
Dependent Claim
12 words
The method of claim 21 wherein the phosphorous compound is phosphoric acid.
Claim 28
Dependent Claim
12 words
The method of claim 21 wherein the phosphorous compound is tributylphosphine oxide.
Claim 29
Dependent Claim
11 words
The method of claim 21 wherein the phosphorous compound is dimethlyphosphite.
Claim 30
Dependent Claim
11 words
The method of claim 21 wherein the phosphorous compound is triphenylphosphine.
Claim 31
Dependent Claim
11 words
The method of claim 21 wherein the phosphorous compound is cyclohexylphosphine.
Claim 32
Dependent Claim
12 words
The method of claim 21 wherein the phosphorous compound is phosphorous trichloride.
Claim 33
Dependent Claim
12 words
The method of claim 21 wherein the phosphorous compound is tributyl phosphite.
Claim 34
Dependent Claim
12 words
The method of claim 21 wherein the phosphorous compound is phosphorous tribromide.
Claim 35
Dependent Claim
12 words
The method of claim 21 wherein the phosphorous compound is phosphorous triiodide.
Claim 36
Dependent Claim
12 words
The method of claim 21 wherein the phosphorous compound is phosphorous oxychloride.
Claim 37
Dependent Claim
18 words
The method of claim 11 wherein the phosphorus to platinum atomic ratio is from about 0.5.to about 20.
Claim 38
Dependent Claim
40 words
The method of claim 11 wherein the composite from step (b) is reduced with a hydrogen stream at a temperature of about 400° to 1200° F. and a GHSV of about 10 to 10,000 for about 0.5 to 10 hours.
Claim 39
Independent Claim
92 words
A method for making a catalyst which comprises the steps of (a) compositing a platinum group component with a porous support material, (b) drying, oxidizing and reducing the composite from step (a), (c) contacting the composite from step (b) with phosphorus or a compound of phosphorus at a temperature less than 700° F. so that the phosphorus to platinum group component atomic ratio is greater than 0.5, and (d) drying, and then reducing the composite from step (c) to decrease the oxidation state of a catalyst component without an intermediate oxidizing step.
Claim 40
Independent Claim
92 words
A method for making a catalyst which comprises the steps of (a) compositing a platinum group component with a porous support material, (b) drying, oxidizing and reducing the composite from step (a), (c) contacting the composite from step (b) with phosphorus or a compound of phosphorus at a temperature less than 700° F. so that the phosphorus to platinum group component atomic ratio is greater than 0.5, and (d) drying, and then reducing the composite from step (c) to decrease the oxidation state of a catalyst component without an intermediate oxidizing step.