Toyo Soda Manufacturing Co., Ltd.

Hideaki Matsunaga

Kenji Tsuzuki

Shunsuke Mabuchi

Shoji Arai

Yukihiro Tsutsumi

Toshihiro Saito

Sadami Shimizu

Makoto Sumita

A trans-[hydridocarbonyl tris(triorganic phosphine) rhodium (I)]is produced by reducing a trans-[chlorocarbonyl bis(triorganic phosphine) rhodium (I)]with a tetrahydroborate in the presence of a triorganic phosphine in a solvent by heating, an improvement characterized in that the reduction is carried out in the presence of carbon monoxide or a mixture of more than 50 vol. % of carbon monoxide and an inert gas and the reaction mixture if cooled to O.degree. to 30.degree. C. in an atmosphere of carbon monoxide or a mixture of more than 50 vol. % of carbon monoxide and an inert gas and the crystal is separated. The trans-[hydridocarbonyl tris(triorganic phosphine) rhodium (I)]having high purity is obtained at high yield.

Process for producing catalyst

The poisoned nickel catalyst obtained from the hydrogenation of an organopolymeric peroxide with hydrogen in an organic solvent is reactivated by treating the poisoned nickel catalyst with hydrogen in an oxygen containing polar organic solvent at 140.degree. - 250.degree. C.

Process for the reactivation of nickel catalysts used in the

A poisoned Raney nickel catalyst from the hydrogenolysis of an organic peroxide polymer is reactivated by treating the catalyst with a 0.1-5 N solution of an activating reagent selected from the group consisting of ammonia, and an alkali metal or an alkaline earth metal hydroxide, carbonate or carboxylate having 1-4 carbon atoms at 20.degree.-200.degree.C under an inert gas atmosphere.

Method of producing diol by hydrogenolysis of peroxide polymers with

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Shinnanyo, Japan

Hideaki Matsunaga