Improved Olefin Production in Fischer-Tropsch-Synthesis

The Fischer-Tropsch Synthesis is an important process to convert coal, natural gas and biomass to a variety of hydrocarbon products of different chain lengths. These products mainly find use as transportation fuels including petrol jet fuel and diesel as well as special waxes. Fischer-Tropsch-Synthesis is, however, also known for its capability of producing chemicals such as olefines which are of a much higher value than low value fuels. This development describes a process modification which allows one to dramatically improve the olefin selectivity over a wide range on the Fischer-Tropsch reaction, via co-feeding of suitable gases such as ammonia. Notably this can be achieved by means with no or tolerable loss of catalysts activity. There has been increasing interest wordwide in the production of hydrocarbon liquids for the fuel market in recent years. Various Gas-to-liquid (GtL) and Coal-to-liquid (CtL) plants are in operation and more will come online. In the near future the conversion of biomass to fuels of the second generation (Biomass to Liquid, BtL) will become increasingly important to be independent from fossil resources. The Fischer-Tropsch-Technology is the key technology for the conversion of the optained syngas into hydrocarbons and, applying the new technology, into nitrogen containing chemicals. Target Groups: An ideal commercial partner to use this modified process will be a company that wants to get into the "XtL" business with focus on chemical production or a company that is already in the "XtL" business, but with an interest in making use of the potential of the Fischer-Tropsch synthesis to produce highly valuable olefins. Moreover, catalysts manufactures who may improve and maximise the performance of catalysts for the modified process will have an interest in this process.

©Carl von Ossietzky Universität Oldenburg


Gas-to-Liquid (GtL) plants, Coal-to-Liquid (CtL) units, Biomass-to-Liquid (BtL) plants


Olefine, Fischer-Tropsch, hydrocarbon products catalysis


PCT application, GCC application


  • Company that wants to get into the "XtL" business with focus on chemical production
  • Company already in the "XtL" business, with interest in making use of the potential to produce high valuable olefins.
  • Catalyst manufacturers


Carl von Ossietzky Universität Oldenburg, University of Cape Town


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