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:
May. 20, 2008
Filed:
Nov. 27, 2002
Peter Jacobus Van Berge, Sasolburg, ZA;
Jan Van DE Loosdrecht, Sasolburg, ZA;
Jacobus Lucas Visagie, Sasolburg, ZA;
Peter Jacobus Van Berge, Sasolburg, ZA;
Jan Van De Loosdrecht, Sasolburg, ZA;
Jacobus Lucas Visagie, Sasolburg, ZA;
Sasol Technology (Proprietary Limited), Johannesburg, ZA;
Abstract
A process for preparing a cobalt based catalyst precursor includes in a first support impregnation/drying/calcination stage, impregnating a particulate porous catalyst support with a cobalt salt, partially drying the impregnated support, and calcining the partially dried impregnated support to obtain a calcined material. The calcined material is partially reduced. Thereafter, in a second support impregnation/drying/calcination stage, the partially reduced material is impregnated with a cobalt salt, partially dried and calcined, to obtain the cobalt based catalyst precursor.