666. ------. [FISCHER, F.] [Hydrocarbons.] German Patent 571,898, Mar. 9, 1933; appl. filed Dec., 10, 1930 (Cl. 12 o-1.03). FIAT Reel AA-90, frames 1,440-1,441; PB 70,275; Chem. Abs., vol. 27, 1933, p. 4239.

Patent Abstracts

666. ------. [FISCHER, F.] [Hydrocarbons.] German Patent 571,898, Mar. 9, 1933; appl. filed Dec., 10, 1930 (Cl. 12 o-1.03). FIAT Reel AA-90, frames 1,440-1,441; PB 70,275; Chem. Abs., vol. 27, 1933, p. 4239.

Liquid aliphatic hydrocarbons are prepared by treating oxides of C with H₂ at pressures near normal by the aid of metallic contact agents containing activated Ni. Any CH₄ formed is reconducted over the catalyst to form liquid hydrocarbons. In the example, the catalyst is prepared by suspending pure kieselguhr in H₂O, adding Ni (NO₃)₂ and Th(NO₃)₄, precipitating with NaOH, and finally washing and drying. This catalyst is activated by reduction in a stream of H₂ at 350º. CO and H₂ are then passed over it in the proportions 1:2 at about 180º. CH₄ is first formed. This is returned over the catalyst to obtain higher homologs. Finally, C₆H₆ occurs in the liquid hydrocarbons forming the product. The catalyst should be free from Cu.