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Return to Abstracts of Literature 1250-1499

Literature Abstracts

 1442.    HOFER, L. J. E., PEEBLES, W. C., AND BEAN, E. H.  X-Ray Diffraction Studies of the Action of Carbon Monoxide on Cobalt-Thoria-Kieselguhr Catalysts.  II.  Jour. Am. Chem. Soc., vol. 72, 1950, pp. 2698-2701.

       Below 235±10° CO reacts with finely divided Co to form only Co₂C, above this temperature inert free C also is formed.  The results of a study of the reactions occurring above this critical temperature are presented.  Reduced Co-Th-kieselguhr catalysts produced increasing amounts of free C and decreasing amounts of Co₂C on carburization with CO at increasing temperatures in the range 243°-298°.  At the high temperatures, the maximum amount of carbide is formed within the 1^st 5 hr. of carburization.  Free C tends to make the catalyst inaccessible to further carbide formation either by poisoning or by mechanical blocking.  Carbide inhibits free-C deposition.  See abs. 1441.