Catalysts & Chemicals Industries Co., Ltd.

Jun Fuchikami

Hidehiro Higashi

Takemithu Yano

Shinichi Yoshida

Takashi Inoue

Hiroyuki Oba

As modified zeolite is disclosed here wherein the volume occupied by pores having a diameter ranging from 50 .ANG. to 600 .ANG. measured by the nitrogen gas absorption method is 30% or more of the volume occupied by pores having a diameter ranging from 0 to 600 .ANG.. The catalyst containing this modified zeolite is suitably used especially in hydroprocessing heavy hydrocarbon oil.

Modified zeolite

A catalyst, prepared by supporting a catalytic effective amount of hydrogenation metal on a catalyst carrier material comprising zeolite and an amorphous inorganic oxide and further incorporating 1-15 wt % of sulfate anions therein, is effective as a hydrotreating catalyst for producing an intermediate fraction with a high yield by desulfurization, demetallization and dentrification of heavy oils.

Catalysts for hydrotreating heavy oils

A hydrocracking catalyst composition comprising metals of Group VIb and Group VIII deposited on a carrier material consisting of Y-zeolite and one or more members of the group consisting of alumina/zinc oxide, alumina/boria and alumina/silica/magnesia, the greater part of the pores of said composition having a diameter of 70-110 .ANG. even when measured by nitrogen adsorption method or by means of a porosimeter under pressure. The catalyst composition having the pores as mentioned above is made by using, as an alumina component of the carrier material, an alumina cake obtained from an amorphous alumina hydrate slurry containing a pseudoboehmite having a crystal size grown in the range of 40 to 80 .ANG..

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Koga, Japan

Jun Fuchikami