2959.     ---------------.  [RUHRCHEMIE, A.-G.]  [Carbon Dioxide in the Circulation Gas of Catalytic Reduction.]  FIAT Reel K-28, July 7, 1938, frames 6,435-6,452B; PB 70,185; TOM Reel 295.

I        n a new catalytic reduction installation for the production of Fischer-Tropsch catalyst, the % of CO2 in the reduction gas was examined during the reduction period.  The CO2, which originates mainly from the decomposition of the carbonates, attains its highest concentration after the first third of the reaction time.  An apparatus for further formation of CH4 converts only part of the liberated CO2.  A reaction on the already reduced catalyst thus results and leads to a loss of activity at reduction temperatures.  14 tables and graphs.