Toa Nenryo Kogyo Kabushiki Kaisha

Tonen Corporation

Ikuo Akizuki

Shohei Okano

Hiroshi Kaya

Takuji Itoh

Tadashi Miura

Keiji Kumagai

Yoshihito Kaneko

Nobuo Otake

Disclosed is a catalyst suitable for hydrotreating hydrocarbonaceous oils which catalyst is comprised of at least one hydrogenative-active metal component supported on a carrier material comprised of about 20 to 60 weight percent of amorphous silica-alumina and about 80 to 40 weight percent of crystalline alumina having an average crystallite size of 35 .ANG., or less.

Hydrotreating catalysts

Hydrotreating catalyst comprising silica/alumina or silica/alumina-containing carrier comprising 2 to 35 wt. % silica and Group VIII and/or Group VIB metals as hydrogenation active components is prepared by first step impregnation with at least one Group VIII metal and a second step impregnation with at least one Group VIB metal. Preferably the impregnation is via ion exchange using a complex salt, preferably an ammine or amine salt, of the metal. The carrier is characterized by a maximum of pores in 30 to 100 .ANG. range and a minimum of pores in 0 to 30 .ANG. and in 300 .ANG.+.

Hydrotreating catalyst and process of manufacture

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Saitama, Japan

Ikuo Akizuki