Sumitomo Metal Mining Company, Ltd.

Tetsuro Kamo

Takao Suzuki

Toshio Yamaguchi

Kikoo Uekusa

Hideharu Yokozuka

Eiji Yamaguchi

Yuji Uragami

Satoshi Abe

Yuuki Kanai

Catalysts for hydrodesulfurization and hydrodenitrogenation of hydrocarbon oils are provided which have high catalytic activity, excellent productivity and low pollution. The catalysts are made from an alumina carrier substance, at least one active metal element selected from the Group VI metals in the periodic table, at least one active metal element chosen from the Group VIII metals in the periodic table, phosphoric acid, and an additive agent. The additive agent is at least one substance selected from dihydric or trihydric alcohols having 2-10 carbon atoms per one molecule, ethers of the alcohols, monosaccharides, disaccharides, and polysaccharides. A method for preparing the catalysts is also provided and includes impregnating the alumina carrier substance with a solution mixed with a certain amount of the active metal elements, phosphoric acid and the additive agent, and drying the impregnated carrier substance at a temperature of less than 200.degree. C.

Catalysts for hydrotreating hydrocarbon oils and method of preparing the

Disclosed is a method of preparing a catalyst for hydrogenation of a hydrocarbon oil, in which a hydroxycarboxylic acid is added to a catalyst carrying a metal of the Group VI of the Periodic Table and a metal of the Group VIII of the same, optionally along with phosphoric acid, on a carrier, in an amount of from 0.3 to 5 molar times of the total metal molar number of the metal of the Group VI and the metal of Group VIII, and thereafter the resulting catalyst is dried at a temperature not higher than 200.degree. C. The catalyst has a high catalyst activity and is used for hydrogenation of a hydrocarbon oil, especially satisfying the requirement of reducing the sulfur content in a light oil.

Method of preparing catalyst for hydrogenation of hydrocarbon oil

A method of preparing a catalyst for hydrogenation of a hydrocarbon oil, wherein an aqueous solution containing a metal of Group VI of the Periodic Table and a metal of Group VIII of the same, along with a hydroxycarboxylic acid and optionally phosphoric acid is added to a carrier substance consisting essentially of at least one 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.degree. C. The catalyst has a high catalyst activity and is used for hydrogenation of a hydrocarbon oil, especially satisfying the requirement of reducing the sulfur content in a light oil.

Disclosed is a method of preparing a high-activity hydrotreating catalyst for hydrocarbon oil, where metals of Group VI (Mo and/or W) and Group VIII (Co and/or Ni) optionally along with phosphorus, and 0.3 to 3.5 molar times of the total molar amount of the metals of particular carboxylic acid(s) (tartaric acid, citric acid, etc.) and 0.1 times or more of the amount necessary for forming the active metals into their sulfides of particular organic sulfur compound(s) (mercapto-acetic acid, mercapto-succinic acid, etc.) are added to a material consisting essentially of at least one of inorganic acids and their hydrates, and they are kneaded shaped and dried at 200.degree. C. or lower. Using the catalyst, hydrotreatment, desulfurization and denitrogenation of hydrocarbon oil may be effected under mild conditions at a reduced operation cost.

Growing community of inventors

Ichikawa, Japan

Tetsuro Kamo