Sumitomo Metal Mining Company, Ltd.

Naoto Kinbara

Yukuaki Mitarai

Toshio Yamaguchi

Kikoo Uekusa

Shigeru Sakai

Yasuhito Takahashi

Tomio Kawaguchi

Eiji Funatsu

Katsuzo Shiraishi

There is disclosed a catalyst which hydrotreats hydrocarbons without need of presulfiding. The catalyst comprises a carrier of an inorganic oxide containing a sulfurizing agent and a water-soluble compound of two metals one of which belongs to the Group VI of the Periodic Table, while the other belongs to the Group VIII. The carrier has pores in which a precursor of a sulfide is formed. The coordination number of the closest Group VI metal found from the radial distribution function around the Group VI metal is less than 0.25. The function is obtained from the Fourier transform of the extended x-ray absorption fine structure of the precursor.

Catalyst for hydrotreating hydrocarbons

Disclosed is a catalyst for hydrotreating a coal liquefaction and circulation solvent, in which .gamma.-alumina carrier carries at least one metal of Group VI of the Periodic Table in an amount of from 15 to 15% by weight as the oxide thereof and at least one metal of Group VIII of the same Table in an amount of from 3 to 10% by weight as the oxide thereof and the pore distribution as measured by mercury pressure porosimetry satisfies the conditions that the pores having a diameter of from 40 to 600 .ANG. have a mean diameter of from 9 to 150 .ANG. and the capacty of the pores having a diameter falling within the range of the mean diametr plus/minus 10 .ANG. is 65% or more of the capacity of the pores having a diameter of from 40 to 600 .ANG.. The catalyst is highly active for both hydrogenation and denitrogenation of coal-liquefying solvents.

Catalyst for hydrotreating coal liquefaction and circulation solvent

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Ichikawa, Japan

Naoto Kinbara