Sasol Technology (pty) Limited

Sasol Technology Proprietary Limited

Sasol Wax Gmbh

Tracy Carolyn Bromfield

Frederick Gideon Botes

Rafael Luis Espinoza

Philip Gibson

Rentia Visagie

Keith Henry Lawson

Sharon Booyens

Reinier Crous

The present invention relates to a hydrocarbon synthesis catalyst comprising in its unreduced form a) Fe as catalytically active metal, b) an alkali metal and/or alkaline-earth metal in an alkali metal- and/or alkaline-earth metal-containing promoter, the alkali metal, c) and a further promoter comprising, or consisting of, one or more element(s) selected from the group of boron, germanium, nitrogen, phosphorus, arsenic, antimony, sulphur, selenium and tellurium, to a process for the synthesis of a hydrocarbon synthesis catalyst, to a hydrocarbon synthesis process which is operated in the present of such a catalyst and to the use of such a catalyst in a hydrocarbon synthesis process.

Olefin selective FT catalyst composition and preparation thereof

This invention relates to a high temperature Fischer-Tropsch (HTFT) hydrocarbon synthesis process comprising the conversion of a feed of Hand at least one carbon oxide to hydrocarbons containing at least 30% on a mass basis hydrocarbons with five or more carbon atoms (hereinafter referred to as Ccompounds). The conversion is carried out in the presence of an alkali-promoted iron hydrocarbon synthesis catalyst, and the process is characterised therein that the reaction mixture formed during the conversion contains less than 0.02 mol alkali per 100 g iron, and that the H:carbon oxide molar ratio in the feed of Hand carbon oxide is at least 2.

Hydrocarbon synthesis process using an alkali promoted iron catalyst

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

This invention relates to a hydrocarbon synthesis process comprising the conversion of a feed of Hand at least one carbon oxide to hydrocarbons containing at least 30% on a mass basis hydrocarbons with five or more carbon atoms. The conversion is carried out in the presence of an alkali-promoted iron hydrocarbon synthesis catalyst and an acidic catalyst suitable for converting hydrocarbons. The reaction mixture formed during the conversion contains less than 0.02 mol alkali per 100 g iron and the H:carbon oxide molar ration in the feed of Hand carbon oxide is at least 2.

Hydrocarbon synthesis process using a hydrocarbon synthesis catalyst and an acidic catalyst

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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Vanderbijlpark, South Africa

Tracy Carolyn Bromfield