711. FISCHER, F., PICHLER, H., AND ZIESECKE, K. (Studien- und Verwertungs-G. m. b. H.). [Process for the Catalytic Production of Hydrocarbons.] German Patent Appl. St 62,438, filed Nov. 5, 1942 (Cl. 12 o-1.03). TOM Reel 100.

Patent Abstracts

711. FISCHER, F., PICHLER, H., AND ZIESECKE, K. (Studien- und Verwertungs-G. m. b. H.). [Process for the Catalytic Production of Hydrocarbons.] German Patent Appl. St 62,438, filed Nov. 5, 1942 (Cl. 12 o-1.03). TOM Reel 100.

The method for producing branched hydrocarbons from CO and H₂ using ThO₂ as the catalyst has been improved by substituting pressures preferably >100 atm. (200-500 atm.) and 350º-450º. Under these conditions liquid, branched, aliphatic, and cyclic hydrocarbons are produced almost entirely. For the production of an active catalyst, basic Th (CO₃)₂ is precipitated from a dilute Th(NO₃)₄ solution with soda and the precipitate thoroughly washed free from alkali with boiling H₂O and dried at 300º in a stream of air. Addition to German Patent Appl. St 61,125 (abs. 3685).