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.