Sasol Technology (Pty) Limited

Sasol Technology Proprietary Limited

Philip Gibson

Rafael Luis Espinoza

Jan Hendrik Scholtz

Tracy Carolyn Bromfield

Frederick Gideon Botes

Keith Henry Lawson

Rentia Visagie

The invention provides heat treated self-supported precipitated &#x3b1;-FeO-based Fischer-Tropsch catalyst particles. The catalyst particles are breakage resistant, thus inhibiting the formation of catalyst fines in the Fischer-Tropsch reactor, thereby maintaining the performance of the reactor and reducing the contamination of down stream processes and catalysts by the catalyst fines. The catalyst particles also exhibit superior synthesis performance in low temperature Fischer-Tropsch processes, e.g., slurry bed reactor processes for the production of wax and other syncrudes. The invention also provides a method for producing the particles and a process for using the particles.

Heat treated Fischer-Tropsch catalyst particles

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

The invention provides heat treated self-supported precipitated iron-based Fischer-Tropsch catalyst particles. The particles of the present invention are breakage resistant and exhibit superior synthesis performance. The invention also provides a method for producing said particles and a process for using said particles.

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.

Hydrocarbon synthesis catalyst and process

The invention provides heat treated self-supported precipitated iron-based Fischer-Tropsch catalyst particles. The particles of the present invention are breakage resistant and exhibit superior synthesis performance. The invention also provides a method for producing particles and a process using particles.

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Sasolburg, South Africa

Philip Gibson