PATENTS

2945.----- [RUHRCHEMIE, A. G.]  [Iron Catalyst for the Production of Predominantly Olefinic and Oxygenated Hydrocarbons by Hydrogenation of Carbon Monoxide.]  German Patent Appl. R 115,709, R 667, filed Mar. 19, 1943  (Cl. IV d-12 o).  FIAT Reel K-30, frames 7,969-7,972; PB 73,587; TOM Reel 177, frames 1,485-1,488; TOM Reel 36, bag 3,454, item 36; Meyer Transl. PC—S—II, Fischer-Tropsch, vol. 1, chap. 6, 1948, p.15.

To increase the % of olefins or oxygenated compounds in the products of CO hydrogenation, the Fe catalysts are promoted with 2% of Ce, V, or Mn and carried on suitable fine grained carriers such as kieselguhr.  CaO, MgO, or diatomaceous earth.  To shorten the induction period or to aid the reduction, 1-5% of Cu or Ag may be added.  Example:  An Fe catalytst of composition 10 Fe, 2 Ag, 10 V₂O₃, 100 kieseiguhr and precipitated from potash solution was used in the synthesis process at 230°-245° and 15 atm. pressure.  The product consisted of 40% benzine up to 200°, 25% diesel oil up to 320°, 15%-soft paraffin up to 320°-460° and 20% hard paraffin above 460°.  The 200° fraction contained 25% alcohols, that from 200°-320°, 26-30% alcohols, and 320°-460°, 15-25% alcohols.  These same fractions contained, respectively, 40, 42, and 50% of olefins.