Nippon Oil Corporation

Nippon Mitsubishi Oil Corporation

Petroleum Energy Center

Toyota Jidosha Kabushiki Kaisha

Eitaro Morita

Shinya Takahashi

Shigeki Matsui

Noboru Ishida

Shinichi Shirahama

Hideshi Iki

Shigeto Hatanaka

Kenichi Komiya

Osamu Kurosawa

Hiroyuki Arai

Naozumi Arimoto

Kazuo Yamamori

A hydrodesulfurization catalyst used for hydrodesulfurization of catalytically cracked gasoline comprises a support composed mainly of alumina modified with an oxide of at least one metal selected from the group consisting of iron, chromium, cobalt, nickel, copper, zinc, yttrium, scandium and lanthanoid-based metals, with at least one metal selected from the group consisting of Group 6A and Group 8 metals loaded as an active metal on the support. Hydrogenation of olefins generated as by-products during hydrodesulfurization of the catalytically cracked gasoline fraction, as an important constituent base of gasoline, can be adequately inhibited to maintain the octane number, while sufficiently reducing the sulfur content of the hydrodesulfurized catalytically cracked gasoline fraction.

Hydrodesulfurization catalyst and hydrodesulfurization process for gasoline fractions

Lubricating oil compositions particularly suitable for automatic transmissions comprising a lubricating base oil, (A) a boron-containing ashless dispersant in an amount of 0.02 to 0.1 percent by mass in terms of boron, based on the total mass of the composition, (B) an alkaline earth metal-based detergent with a base number of 0 to 500 mgKOH/g in an amount of 0.01 percent by mass or more in terms of alkaline earth metal, based on the total mass of the composition, and (C) an alkali metal borate or a hydrate thereof and having excellent anti-wear properties and improved fatigue life by inhibiting pitching.

Lubricating oil composition

Lubricant compositions

Growing community of inventors

Yokohama, Japan

Eitaro Morita