Sasol Technology (pty) Limited

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Tracy Carolyn Bromfield

Rafael Luis Espinoza

Keith Henry Lawson

Philip Gibson

Frederick Gideon Botes

According to the present invention there is provided the use of a source of chromium in combination with a precipitated iron catalyst in a high temperature Fischer-Tropsch process to convert CO and Hto hydrocarbons and possibly oxygenates thereof. In the process CO and Hare contacted with the source of chromium in combination with the precipitated iron catalyst in a high temperature Fischer-Tropsch reaction. The invention also relates to the use of a source of chromium in the preparation of a precipitated iron catalyst for use in high temperature Fischer-Tropsch process and to a precipitated iron catalyst suitable for use in a high temperature Fischer-Tropsch process which contains a source of chromium.

Use of a source of chromium with a precipitated catalyst in a Fischer-Tropsch reaction

According to the present invention there is provided a hydrocarbon synthesis catalyst comprising a precipitated iron product and a catalyst promotor. The catalyst has a surface area of below 60 mper gram of catalyst in the reduced form or below 100 mper gram of catalyst in the non-reduced form. According to the invention there is also provided a process for preparing the catalyst and the use thereof in the synthesis of hydrocarbons.

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Sasolburg, South Africa

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