Patents

3101.  --------.  [Process for the Aromatization of Hydrocarbons.]  German Patent Appl. R 103,379, R404, filed Sept. 19, 1938 (Cl. IV d-12 o).  TOM Reel 41, bag 2,744, item 14.3 pp.

In aromatizing aliphatic hydrocarbons in accordance with the method of German Patent 763,831 (abs. 3004), the reaction is continued only until the H₂ content of the end gas freed from the liquid reaction products by condensation amounts to at least 80%, and then the catalyst is regenerated by burning with air until the CO₂ content of the combustion gas has decreased to 1-5%.  If regeneration is carried too far the activity of the catalyst falls off sharply and recovers very slowly and if not far enough only a partial aromatization is obtained.  After regeneration is completed the catalyst shoudl be treated for a short time with H₂.