Chiyoda Corporation

Chiyoda Chemical Engineering Construction Co., Ltd.

Mitsubishi Oil Co., Ltd.

Research Association for Utilization of Light Oil

Nippon Kokan Co., Ltd.

Research Association for the Utilization of Light Oil

Toshiji Makabe

Shinichi Inoue

Yoshimi Okada

Fumio Kumata

Kazuo Takahashi

Masashi Saito

Hitoshi Nozaki

Munekazu Nakamura

Noriyuki Yoneda

Hiroaki Nishijima

Toru Takatsuka

Kenji Shimokawa

Osamu Togari

Akihiro Mutou

Masatoshi Matsuda

Tateo Ono

Hisashi Nomura

Hidehiko Kudoh

Hidehiko Kudou

Kazutomo Shimizu

Takako Nishijima

Jun Kaita

Tatsuo Morimoto

Yoshiko Endoh

Shunji Higashi

Provided are: a uniformly, highly dispersed metal catalyst including a catalyst carrier and a catalyst metal being loaded thereon dispersed throughout the carrier, the uniformly, highly dispersed metal catalyst having excellent performances with respect to catalytic activity, selectivity, life, etc.; and a method of producing the same. The uniformly, highly dispersed metal catalyst includes a catalyst carrier made of a metal oxide and a catalyst metal having catalytic activity, the catalyst metal being loaded on the catalyst carrier, in which the catalyst carrier is a sulfur-containing catalyst carrier having sulfur or a sulfur compound almost evenly distributed throughout the carrier and the catalyst metal is loaded on the sulfur-containing catalyst carrier in a substantially evenly dispersed manner over the entire carrier substantially according to the distribution of the sulfur or the sulfur compound.

Uniformly, highly dispersed metal catalyst and process for producing the same

This invention relates to a 4 group metal oxide and to a method for preparation thereof and the 4 group metal oxide prepared by adding a particle growth inhibiter to a hydrosol a hydrogel or a dried product of a hydrous 4 group metal oxide represented by MO(OH)(wherein M denotes a 4 group metal and x is a number greater than 0.1 or x&#x3e;0.1) followed by drying and calcining has a specific surface area of 80 m/g or more, a pore volume of 0.2 ml/g or more and a pore sharpness degree of 50% or more and excellent heat stability and is useful for a catalyst or a catalyst carrier in which a catalyst metal is dispersed to a high degree. This invention further relates to a porous 4 group metal oxide and to a method for preparation thereof and the 4 group metal oxide prepared by application of a pH swing operation is characterized by a large specific surface area, excellent heat stability, high dispersion of a catalyst metal and a controlled and sharp pore distribution and is useful for a catalyst or a catalyst carrier of excellent reaction selectivity.

Porous 4 group metal oxide and method for preparation thereof

A process for producing a spherical zeolite catalyst is disclosed, which comprises dropping a zeolite-containing alumina sol into a surfactant-containing oil phase from a dropping opening directly or through air to thereby form spherical droplets of the sol, and then allowing the droplets to gel in an aqueous alkaline solution phase underlying the oil phase and withdrawing the thus gelled droplets, said dropping of the sol being conducted while the dropping opening is being impulsed to thereby impart a spherical and uniform shape to the resulting zeolite particles containing alumina as a binder, and a novel apparatus therefor.

Process for producing spherical zeolite catalyst and apparatus for

Process for preparing high-octane gasoline blending stock

A catalyst for dehalogenation of a halide comprising a corrosion-resistant ceramic or graphite having a surface area of 5.0 m.sup.2 /g or less and, supported thereon, at least one of a platinum group metal and a silicide thereof, and a method of dehalogenation of a halide using this catalyst.

Method for dehalogenation of a halide and catalyst used therefor

A catalyst for hydrocracking heavy hydrocarbon oils includes a porous inorganic carrier composed mainly of alumina or titania, and two or more catalytic metal components composited with the carrier. The metals of the catalytic metal components are either (a) V and at least one element selected from Zn, Fe, Co, Ni, Cu, Ag, Sn and Pb or (b) Mo and at least one element selected from Zn, Cu, Ag, Sn, Pb and the lanthanum-series elements. The catalyst has at least 60% of its total pore volume in pores with a diameter of 200 .ANG. or more, at least 40% of its totalpore volume in pores with a diameter of 300 .ANG. or more and not more than 20% of its total pore volume in pores with a diameter of at least 1000 .ANG.. Disclosed also is a process for hydrocracking a heavy hydrocarbon oil in the presence of the above catalyst.

Process for hydrocracking heavy hydrocarbon oils and catalyst therefor

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Kanagawa, Japan

Toshiji Makabe