3466.     TSUNEOKA, S., AND FUNASAKA, W.  Purification of the Gaseous Raw Material Used for Benzine Synthesis.  I.  Removal of Organic Sulfur Compounds at Low Temperature.  Jour. Soc. Chem. Ind. (Japan), vol. 41, B, 1938, pp. 43-47; Sci. Papers Inst. Phys. Chem. Research (Tokyo), vol. 34, 1938, pp. 301-309 (in German); Chem. Abs., vol. 32, 1938, p. 3577.

        Researches were undertaken to find a satisfactory method of S removal, with known or new materials, from a gas to be used further for the synthesis of benzine, its S content to be less than 0.2 gm. per 100 m.3 city gas, with a total S content of 24.0 gm. S per 100 m.3, of which 22.6 gm. S is organic, was freed of CO2 and H2S and, as such, used over adsorbent materials, dry purificants, and H2S extraction materials at room temperature.  As adsorbent materials were used active C, SiO2 gel, Japanese acid earths, and Adosol.  Active C was found the most efficient but not active enough to produce a highly purified gas.  As dry purificants, Fe2O3 on a pumice support and Luxmasse were used; as H2S scrubbing materials, Thylox soluble and (C2H5)3N, to which Fe2O3 was added, were used.  80% S removed was obtained with the dry purificants.  Thylox failed to extract the organic S, while, with (C2H5)3N, 67.7%, S removal was obtained; it ws further improved by addition of Fe2O.