[12] Patent
[11] Patent No.:GC0007497  
[45] Date of Publishing the Grant of the Patent: 30/Apr /2018                48/2018  
Number of the Decision to Grant the Patent:2018/125343
Date of the Decision to Grant the Patent:03/Apr/2018

[21] Application No.:GC 2012-21208

[22] Filing Date:6/5/2012

[30] Priority:

[33] State [32] Priority date [31] Priority No.
ZA
6/5/2011
2011/03329

[72] Inventors:1- BARRADAS, Sean،2- ELOFF, Cornelia Carolina،3- VISAGIE, Jacobus Lucas

[73] Owner: SASOL TECHNOLOGY (PROPRIETARY) LIMITED, 1 Sturdee Avenue, Rosebank, 2196, Johannesburg, South Africa

[74] Agent: Suleiman I. Al-Ammar Law Office

  

 

  

[51]IPC:
Int. Cl.: B01J23/75; B01J23/889; B01J23/89; B01J35/00; B01J37/08; C07C1/04 (2006.01)

[56] Cited Documents:

-WO 2008/135939 A2 (SASOL TECH PTY LTD[ZA]; VISAGIE JACOBUS LUCAS [ZA]; BOTHAJAN MATTHEU) 13 November 2008
-US 4 605 676 A (KOBYLINSKI THADDEUS P [US]ET AL) 12 August 1986
-WO 02/089978 A1 (SUED CHEMIE INC [US]) 14 November 2002
-WO 03/033137 A1 (CONOCO INC [US]) 24 April 2003
-US 4 717 702 A (BEUTHER HAROLD [US] ET AL)5 January 1988
-US 4 399 234 A (BEUTHER HAROLD [US] ET AL)16 August 1983
-WO 03/035257 A1 (SASOL TECH PTY LTD [ZA];MEERN BV ENGELHARD DE [NL]; VAN BERGEPETER J) 1 May 2003
 
Examiner: Rami Al-Ghamdi

[54] PREPARATION OF COBALT-CONTAINING HYDROCARBON SYNTHESIS CATALYST PRECURSORS AND CATALYSTS OBTAINED THEREFROM
[57] Abstract: A process for preparing a cobalt-containing hydrocarbon synthesis catalyst precursor includes calcining a loaded catalyst support comprising a catalyst support supporting a cobalt compound. The calcination includes heating the loaded catalyst support over a heating temperature range of 90°C to 220°C using (i) one or more high heating rate periods during the heating over the heating temperature range wherein heating of the loaded catalyst support takes place at a heating rate of at least 10°C/minute, and wherein a gas velocity of at least 5m3n/kg cobalt compound/hour is effected over the loaded catalyst support, and (ii) one or more low heating rate periods during the heating over the heating temperature range wherein heating of the loaded catalyst support takes place at a heating rate of less than 6°C/minute. The cobalt compound is thereby calcined, with a cobalt-containing hydrocarbon synthesis catalyst precursor being produced.
No. of claims: 21


 

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