Cosmo Oil Co., Ltd.

Petroleum Energy Center

Cosmo Research Institute

Mitsuru Ohi

Mitsugu Tsujii

Seiichi Harima

Masaki Tan-no

Kazushi Usui

Tomohiro Yoshinari

Yasuo Yamamoto

Yoshihiro Mizutani

Nobuki Sekine

Yukihiro Mimura

Masaki Tanno

The present invention disclosed a crystalline aluminosilicate which has the following characteristics:

Process for producing a crystalline aluminosilicate

Crystalline aluminosilicate, process for producing the same, and

A crystalline aluminosilicate which has the following characteristics:

Catalyst composition for catalytic cracking of hydrocarbon oil and

A catalyst composition for the hydrotreatment of hydrocarbon oils is disclosed. The composition comprises at least one metal compound having hydrogenating activity belonging to a Group VIB or Group VIII carried on a carrier comprising 2-35% by weight of zeolite and 98-65% by weight of alumina or an alumina-containing substance, wherein, (A) said alumina or alumina-containing substance (1) has a mean pore diameter of 60-125 angstrom and (2) contains the pore volume of which the diameter falls within .+-.10 angstrom of the mean pore diameter of 70-98% of the total pore volume, (B) said zeolite (3) has a mean particle size of 6 .mu.m or smaller and (4) contains particles of which the diameter is 6 .mu.m or smaller of 70-98% of all zeolite particles. It has both high hydrodesulfurization and high cracking capabilities at the same time, and can selectively crack the heavy fractions which have once been hydrotreated, yielding lighter fractions.

Catalyst composition for hydrotreating of hydrocarbons and hydrotreating

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Saitama, Japan

Mitsuru Ohi