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Return to Abstracts of Literature 1750-1999

Literature Abstracts

 1901.    ---------------.  [MURATA, Y., NAKAGAWA, M., TASHIRO, E., AND UNEMURA, T.]  Synthesis of Benzine From Carbon Monoxide and Hydrogen.  LXV. Reduction by Hydrogen and Heat Treatment of Iron Catalysts.  Jour. Soc. Chem. Ind. (Japan), vol. 46, 1943, pp. 52-68; Chem. Abs., vol. 43, 1949, p. 2401.

        Effect on the activity of Fe catalysts of various compositions by reducing with H₂, reoxidizing with air, and heating (without reduction) in a current of air was studied.  Fe catalysts lose their activity when reduced with H₂ according to the temperature and time; thus they totally lose their catalytic power when reduced in H₂ 4-8 hr. at 450°, while those reduced at 250° for 4-10 hr. regain their activity in the course of 1-2 days of normal operation.  The activity of the catalysts reduced with H₂ is not recovered by oxidation with air at 250°-450°.  Fe catalysts slightly increase their activity when heated in an air current at 100°-400°, but when the temperature is above 400°, the activity is gradually reduced with the elevation of temperature until at 600° it is completely lost.