The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 2011
Filed:
May. 05, 2008
Jacobus Lucus Visagie, Sasolburg, ZA;
Jan Mattheus Botha, Sasolburg, ZA;
Johannes Gerhardus Koortzen, Sasolburg, ZA;
Michael Steven Datt, Johannesburg, ZA;
Alta Bohmer, Deneysville, ZA;
Jan Van DE Loosdrecht, Sasolburg, ZA;
Abdool Muthalib Saib, Vanderbijlpark, ZA;
Jacobus Lucus Visagie, Sasolburg, ZA;
Jan Mattheus Botha, Sasolburg, ZA;
Johannes Gerhardus Koortzen, Sasolburg, ZA;
Michael Steven Datt, Johannesburg, ZA;
Alta Bohmer, Deneysville, ZA;
Jan Van De Loosdrecht, Sasolburg, ZA;
Abdool Muthalib Saib, Vanderbijlpark, ZA;
Abstract
A process for producing a supported cobalt-based Fischer-Tropsch synthesis catalyst includes, in a first activation stage, treating a particulate catalyst precursor with a reducing gas, at a heating rate, HR1, until the precursor has reached a temperature, T, where 80° C.≦T≦180° C., to obtain a partially treated precursor. In a second activation stage, the partially treated precursor is treated with a reducing gas, at an average heating rate, HR2, with x step increments, where 0<HR2<HR1, for a time, t, where tis from 0.1 to 20 hours, to obtain a partially reduced precursor. Thereafter, in a third activation stage, the partially reduced precursor is treated with a reducing gas, at a heating rate, HR3, where HR3>HR2 until the partially reduced precursor reaches a temperature, T. The partially reduced precursor is maintained at Tfor a time, t, where tis from 0 to 20 hours, to obtain an activated catalyst.