2974.     ---------------.  [RUHRCHEMIE, A.-G.]  [Duration Test for the Olefin Synthesis in A Double Tube Furnace With a Cobalt Catalyst.]  FIAT Reel L-5, Aug. 31, 1943, frames 157-172; PB 70,159; TOM Reel 299.

        Test of 6 mo. duration with water gas recycle under 7 atm. pressure was carried out in a 4-m. double-tube furnace with Co catalyst mixture.  The average charge on the furnace during the test amounted to 1,190 m.³ of water gas.  With the aging of the catalyst, its converting capacity was greatly reduced, in spite of a decrease of charge and an increase of temperature.  The results of the tests are shown in several tables.