Catalysts & Chemicals Industries Co., Ltd.

Gifu University

Yoichi Nishimura

Katsuhiro Shirono

Masamitsu Ogata

Seiji Sanga

Hidehiro Higashi

Takanori Ida

Yoshihiro Sugi

Tatsuo Masuda

Yoshihiro Kubota

Hiromi Nakamoto

Kouichi Ohama

Tamechika Yamamoto

Shinichi Yoshida

Puspa Ratu

Yuusaku Arima

Provided is a catalyst composition for the isomerization of n-paraffin which comprises a &#x3b2;-zeolite having been synthesized according to a dry gel process and contains cerium, the &#x3b2;-zeolite being characterized in that it has an average particle diameter of 0.01&#x2dc;0.1 &#x3bc;m and the proportion of the cerium in the &#x3b2;-zeolite is within the range of 0.001&#x2dc;0.2 in terms of the atomic ratio of the silicon atom in the &#x3b2;-zeolite to the cerium atom, i.e. [Ce]/[Si] as well as a process for isomerizing n-paraffin which comprises bringing n-paraffin into contact with the catalyst composition as set forth above.

Catalyst composition for the isomerization of n-paraffin and a process for isomerizing n-paraffin

The composition obtained by mixing a Y faujasite, having a phosphorus component into a water suspension of precursor of a porous matrix, and spray-drying said mixture, is a heavy hydrocarbon catalytic cracking catalyst which produces gasoline in high yield and is superior in thermally stability.

Hydrocarbon oil catalytic cracking catalyst compositions

Method for the preparation of catalyst composition for use in cracking

A two-stage process for hydrotreating asphaltenes and metallic contaminants-containing heavy hydrocarbon oils which comprises a demetallization step using a catalyst composition which is smaller in pore size and less in active metal amount than the conventional demetallization catalysts, and a hydrotreating step using a catalyst composition which is larger in pore size and more in active metal amount than the conventional hydrodesulfurization catalysts or hydrocracking catalysts, said hydrotreating step being located downstream of said demetallization step.

Process for hydrotreating heavy hydrocarbon oils

Disclosed in the present invention is a process for removing ammoniacal nitrogen from zeolite by bringing a zeolite-containing substance employed for adsorbing ammoniacal nitrogen contained in sewage into contact with an aqueous solution of sodium carbonate having a pH value of 11.+-.1.0.

Reclaiming process for zeolite served for adsorbing ammoniacal nitrogen

A sewer waste-water treating agent of superior quality produced by alkali treatment of waste catalyst grains arising from the fluid-bed type catalytic cracking process, said sewer waste-water treating agent being capable of facilitating solid-liquid separation.

Sewer waste water treating agent produced from waste cracking catalyst

Growing community of inventors

Yokohama, Japan

Yoichi Nishimura