PATENTS

      1475.  ------.  [I. G. FARBENINDUSTRIE, A. G.]  [Producing Oxygenated Organic Compounds.]  German Patent Appl. I 73,291. OZ 13,705, filed Oct. 5. 1942 (Cl. IV d-12 o),  FIAT Reel 168, frames 7,464-7,468; PB 68,561: TOM Reel 36. bag 3,454. item 21: Meyer Transl. PC-S-V, Oxo, vol. 1, chap. 25, 1948. p. 62.

            When oxygenated compounds are obtained by the interaction of CO and H₂ on olefins, considerable quantities of the Co catalyst is lost by solution and otherwise.  It is now proposed to recover and make use of this catalyst material by passing through the converter space at increased temperature and pressure CO, together with a solvent of the organic compounds of the catalyst metal as well as an organic acid suitable for the formation of a soluble metal salt.  The solution thus obtained is added to the olefinic raw material.  Example:  Through the synthesis converter provided with a Co catalyst is passed, at 160º and 200 atm. with injection of CO and H₂ in proportion of 1: 1, at the rate of 700 cc. per hr., a mixture of 97.25 wt. % of a synthetic gasoline having a 65% olefin content, 2 % of a synthetic alcohol obtained by synthesis from CO and H₂ serving as a solvent for the catalyst, and 0.75% of the Co salt of a so-called first-run fatty acid from paraffin oxidation.  The crude liquor contains about 0.12% of Co; the conversion mixture leaving the reactor space an average of only 0.006% Co.  There is formed then from the metal precipitated in the reactor space and from the acid under the influence of the CO the metal salt corresponding to that dissolved in the solvent utilized.  After all the metal has been recovered, the solution is added to the original catalyst.  Addition to German Patent Appl. I 71,700 (abs. 1504).