Asahi Kasei Kogyo Kabushiki Kaisha

Kohji Inada

Tetsuya Miyake

Maomi Seko

Kunihiko Takeda

Norito Ogawa

Tomio Sakamoto

Kazushi Ochi

Motohisa Asano

An isotope separation apparatus comprises a plurality of independent developing units, each comprising 2 to 20 adsorbent-packed columns forming a continuous developing circuit or passageway, and the developing units are connected to at least one common main pipe for supplying an isotope mixture solution, a regenerating agent solution, or an eluent solution. Also, in a further embodiment the developing units are connected to common liquid-discharge main pipes. The separation or concentration of isotopes such as uranium isotopes, nitrogen isotopes, boron isotopes, etc., is performed by continuously developing the isotope mixture solution passed through the individual adsorbent-packed columns successively in each developing units.

Isotope separation

A process for the adsorption separation of C.sub.8 aromatic isomers which comprises the steps of:

Separation of C.sub.8 aromatic isomers

A process for separation of uranium isotopes by chromatography through an anion exchange material is found to be improved in efficiency of separation as well as in productivity by addition of a catalyst for accelerating electron exchange reactions occurring in the system under conditions to retain uranyl ions on the anion exchange material preferentially over uranous ions.

Chromatographic separation of uranium isotopes

A novel catalyst for isotope exchange reaction between uranium(IV) and uranium(VI) compounds enables acceleration of the reaction rate as much as 3000 times to make industrial separation of uranium isotopes economically possible.

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Yokohama, Japan

Kohji Inada