Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
84 words
Process for the treatment of a supported multi-metallic platinum-containing catalyst wherein the catalyst is contacted with an oxygen-containing gas at elevated temperatures, followed by a first reduction step, followed by treatment with chlorine at elevated temperatures, followed by a second reduction step, characterized by treating the catalyst with a dry hydrogen halide in the absence of oxygen or a source thereof after or concurrent with the first reduction treatment and carrying out the remaining steps in the absence of oxygen or a source thereof.
Claim 2
Dependent Claim
84 words
Process for the treatment of a supported multi-metallic platinum-containing catalyst wherein the catalyst is contacted with an oxygen-containing gas at elevated temperatures, followed by a first reduction step, followed by treatment with chlorine at elevated temperatures, followed by a second reduction step, characterized by treating the catalyst with a dry hydrogen halide in the absence of oxygen or a source thereof after or concurrent with the first reduction treatment and carrying out the remaining steps in the absence of oxygen or a source thereof.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the hydrogen halide is hydrogen chloride.
Claim 4
Dependent Claim
16 words
The process of claim 1 or 2 wherein the catalyst is a platinum- and iridium-containing catalyst.
Claim 5
Dependent Claim
23 words
The process of any one of claims 1 to 3 wherein the catalyst is at least partially deactivated by deposition of carbonaceous material.
Claim 6
Dependent Claim
22 words
The process of any one of claims 1 to 4 wherein the dry hydrogen chloride is in admixture with an inert gas.
Claim 7
Dependent Claim
11 words
The process of claim 5 wherein the inert gas is nitrogen.
Claim 8
Dependent Claim
17 words
The process of any one of claims 1 to 6 wherein the platinum-containing catalyst also contains rhenium.
Claim 9
Dependent Claim
25 words
The process of claim 7 wherein the catalyst is treated with a mixture of a chlorine-containing component and oxygen prior to the first reduction step.
Claim 10
Dependent Claim
12 words
The process of claim 8 wherein the chlorine-containing component is hydrogen chloride.
Claim 11
Dependent Claim
11 words
The process of claim 8 wherein the chlorine-containing component is chlorine.
Claim 12
Dependent Claim
17 words
The process of any one of claims 8 to 10 wherein an inert gas is also used.
Claim 13
Dependent Claim
11 words
The process of claim 11 wherein the inert gas is nitrogen.