Mitsui Toatsu Chemicals, Incorporated

Mitsui Coke Co. Ltd.

Tadashi Komiyama

Hisaharu Kuboyama

Hiroshi Kimura

Mutsuo Nakajima

Hiroyoshi Watanabe

Kenji Yoshida

Noriaki Ohnishi

Takashi Jimbo

Shoichi Oi

Shinya Mori

Tadanobu Takata

Isao Kubo

Yoshitaro Naganuma

Shuichi Tokumoto

Yumiko Endoh

Eiichi Sugiyama

At least one of ammonia and ethylenediamine is reacted with monoethanolamine in the presence of a catalyst containing phosphoric acid or its condensate in order to prepare acyclic ethyleneamines, and the catalyst can be improved in performance and the life of the catalyst can be prolonged by feeding a phosphorus-containing material to a reaction system during the reaction. In addition, the catalyst having a deteriorated performance can be reactivated by adding the phosphorus-containing material to the catalyst.

Process for preparation of acyclic ethyleneamines

Ethylene is oxidized into ethylene oxide by bringing a feed gas mixture, which contains the ethylene, oxygen and at least 1 vol. % of carbon dioxide as well as at least 0.5 vol. ppm of a chlorine-containing burning reaction decelerator and at least 1 vol. ppm as calculated in terms of nitrogen monoxide of a nitrogen oxide and/or a precursor thereof, into contact with a catalyst which carries silver and as a practically sole alkali metal, rubidium at an Rb/Ag atomic ratio of 2/1000-7/1000 on a fire-resistant carrier having a specific surface area of 1 m.sup.2 /g or smaller.

Preparation process of ethylene oxide

In a process wherein a slurry of water-containing coal and a solvent is heated to 100.degree.-350.degree. C. and then subjected to vapor-liquid separation by which water vapor is separated from the slurry to obtain a dehydrated slurry, a slurry to be dehydrated is mixed with a part of the dehydrated slurry and then heated. The dehydrated slurry thus obtained is suitable for use as a starting material for the hydrogenolysis of coal.

Process for the dehydration and liquefaction of water-containing coal

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Yokohama, Japan

Tadashi Komiyama