PATENT

3269. ----- [SCHILLER, J. C.]  (Standard Oil Development Co.).  FerroFerric Oxide-Alkali Metal Trioxalate Ferriate Catalyst and Process of Preparation.  United States Patent 2,465279, Mar. 22, 1949; original appl. filed Dec. 20, 1946, Serial No. 717,578; divided and this appl. filed June 1, 1948, Serial No. 30,497; 10 claims (Cl. 252-474).  Chem. Abs., vol. 43, 1949, p. 4448.

Catalysts contain 80-99.8% Fe oxide and 0.2-20% alkali metal trioxalatoferrate  (III) and are suitable for the synthesis of hydrocarbons from CO and H₂.  For example, Fe₂(SO₄)₃ 25 parts and BaC₂O₄H₂O 50 parts in H₂O 600 parts are warmed several hr., filtered and the filtrate evaporated to yield K₃Fe(C₂O₄)₃3H₂O(I).  A thoroughly mixed slurry of  (I) 5% and Fe₃O₄ 95% is dried at 100°, pulverized, pelleted, heated 4.5 hr. at 1,000° F. in an O₂-containing atm., and reduced 24hr. at 700° F. in a current of 1,000 vol. H₂ per vol. catalyst per hr.  (I) may also be prepared by mixing aqueous solutions containing Fe₂(SO₄)₃ 20 parts and K₂C₂O₄ 100 parts, respectively.