Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
71 words
A method of preparing a catalyst for hydrogenation of a hydrocarbon oil, in which an aqueous solution containing metals of both Group VI and Group VIII of the Periodic Table along with a hydroxycarboxylic acid is added to a carrier consisting essentially of either or both of an inorganic oxide and an inorganic hydrate, and the resulting blend is kneaded, shaped and thereafter dried at a temperature not higher than 200°C.
Claim 2
Independent Claim
72 words
A method of preparing a catalyst for hydrogenation of a hydrocarbon oil, in which an aqueous solution containing metals of both Group VI and Group VIII of the Periodic Table with a hydroxycarboxylic acid and phosphoric acid is added to a carrier consisting essentially either or both of an inorganic oxide and an inorganic hydrate, and the resulting blend is kneaded, shaped and thereafter dried at a temperature not higher than 200°C.
Claim 3
Dependent Claim
29 words
The method as claimed in claim 1 or claim 2, in which the metal of Group VI of the Periodic Table is at least one of Mo and W.
Claim 4
Independent Claim
27 words
The method as claimed in any preceding claim, in which the metal of Group VIII of the Periodic Table is at least one of Co and Ni.
Claim 5
Dependent Claim
38 words
The method as claimed in any preceding claim 1, in which the hydroxycarboxylic acid is at least one of glycolic acid, hydroxypropionic acid, hydroxybutyric acid, hydroxyhexanoic acid, tartaric acid, malic acid, glyceric acid, citric acid and gluconic acid.
Claim 6
Independent Claim
27 words
The method as claimed in any preceding claim, in which the amount of the metal Group VI is from 5 to 30 by weight as its oxide.
Claim 7
Dependent Claim
38 words
The method of preparing a catalyst for hydrogenation of a hydrocarbon oil as claimed in claim 1, in which the amount of the metal of Group VIII is from 1 to 8 % by weight as its oxide.
Claim 8
Dependent Claim
32 words
The method of preparing a catalyst for hydrogenation of a hydrocarbon oil as claimed in claim 1, in which the carrier is one or more alumina, silica, titania, zirconia, and hydrates thereof.
Claim 9
Dependent Claim
36 words
The method of preparing a catalyst for hydrogenation of a hydrocarbon oil as claimed in claim 2, in which the phosphoric acid is meta-phosphoric acid, pyro-phosphoric acid, ortho-phosphoric acid, tri-phosphoric acid, tetra-phosphoric acid or nickel phosphate.
Claim 10
Dependent Claim
42 words
The method of preparing a catalyst for hydrogenation of a hydrocarbon oil as claimed in claim 2 or 9, in which the amount of the phosphoric acid to be in the catalyst is from 0.1 to 8 % by weight as P₂O₅.
Claim 11
Dependent Claim
35 words
The method of preparing a catalyst for hydrogenation of a hydrocarbon oil as claimed in claim 2, 9 or 10, in which the catalyst carrier is selected from alumina, silica, titania, zirconia, and their hydrates.
Claim 12
Independent Claim
17 words
A method of hydrogenating a hydrocarbon oil utilising a catalyst prepared in accordance with any preceding claim.