TITLE: Development of Catalysts and Process for the Preparation of Long-Chain Aliphates from Synthesis Gas.

AUTHOR: K. Moraw;   C. D. Frohning.

INST.  AUTHOR: Bundesministerium fuer Forschung und Technologie, Bonn-Bad Godesberg (Germany, F.R.).


PUB.  TYPE: Technical Report

PUB.  COUNTRY: Germany Federal Republic

SOURCE: Department of Energy [DEE],  Jul 84,  127p.



The aim of the research was to shift the product range of the Fischer-Tropsch-Synthesis as far as possible towards long-chain hydrocarbons. The results achieved show that by the development of special catalysts and the use of appropriate process conditions, it is possible to influence the product composition in the FT synthesis so that mainly long-chain hydrocarbons are produced. With two types of catalysts - strongly alkalised iron catalysts and catalysts with SMSI-character - a combination of high selectivity and good activity was achieved. Space-time yields of 20 - 29 g of wax per 1 catalyst x h were attained. This is a definite improvement on the current state of technology. A further improvement of the wax yield has been achieved with the recirculation of product formed during the reaction which is liquid under reaction conditions (Rieselfilm). However, the work on this development has not yet been concluded. (ERA citation 10:004149)