PATENT

3586. ----- [STEINKOHLEN-BERGWERK “RHEINPREUSSEN”].  [Iron Catalysts.]  German Patent Appl. St 57,987, no date, (Cl. 12 o-1.03).  Auszüge deut. Patent-Anmeldungen, vol. 6, p. 358.

Fe catalysts are made by dissolving wrought Fe, ingot steel, or mineral Fe in HNO2 and thermally decomposing the nitrate.  Addition to German Patent Appl. St 57,727 (abs.3585).