Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
16 words
A catalyst for steam reforming of hydrocarbons which comprises a zirconia carrier and ruthenium supported thereon.
Claim 2
Dependent Claim
16 words
A catalyst for steam reforming of hydrocarbons which comprises a zirconia carrier and ruthenium supported thereon.
Claim 3
Dependent Claim
19 words
A catalyst according to claim 1 wherein amount of ruthenium supported is 0.01-5% by weight of the zirconia carrier.
Claim 4
Dependent Claim
67 words
A catalyst for steam reforming of hydrocarbons which comprises a zirconia carrier and, supported thereon, (A) at least one element selected from the group consisting of rhodium and ruthenium as an element imparting mainly reforming activity and (B) at least one element selected from the group consisting of nickel, lanthanum, praseodymium, neodymium, samarium, thorium, uranium, chromium, magnesium, calcium, and yttrium as an element for imparting co-catalyst function.
Claim 5
Dependent Claim
67 words
A catalyst for steam reforming of hydrocarbons which comprises a zirconia carrier and, supported thereon, (A) at least one element selected from the group consisting of rhodium and ruthenium as an element imparting mainly reforming activity and (B) at least one element selected from the group consisting of nickel, lanthanum, praseodymium, neodymium, samarium, thorium, uranium, chromium, magnesium, calcium, and yttrium as an element for imparting co-catalyst function.
Claim 6
Dependent Claim
30 words
A catalyst according to claim 3 wherein amount of at least one element selected from the group consisting of rhodium and ruthenium is 0.1-5% by weight of the zirconia carrier.
Claim 7
Dependent Claim
42 words
A catalyst according to claim 3 wherein amount of at least one element selected from the group consisting of nickel, lanthanum, praseodymium, neodymium, samarium, thorium, uranium, chromium, magnesium, calcium and yttrium is 0.1-10% by weight of metals supported on the zirconia carrier.
Claim 8
Dependent Claim
30 words
A catalyst for steam reforming of hydrocarbons which comprises a partially stabilized zirconia carrier and, supported thereon, at least one element selected from the group consisting of rhodium and ruthenium.
Claim 9
Dependent Claim
30 words
A catalyst for steam reforming of hydrocarbons which comprises a partially stabilized zirconia carrier and, supported thereon, at least one element selected from the group consisting of rhodium and ruthenium.
Claim 10
Dependent Claim
37 words
A catalyst according to claim 6 wherein the partially stabilized zirconia carrier contains a zirconia component and a yttrium oxide component, a magnesium oxide component or a cerium oxide component as a stabilizer for the zirconia component.
Claim 11
Dependent Claim
32 words
A catalyst according to claim 6 wherein amount of at least one element selected from the group consisting of rhodium and ruthenium is 0.1-5% by weight of the partially stabilized zirconia carrier.