A process for preparing a cobalt based catalyst precursor includes, in a support impregnation stage, impregnating a coated catalyst support comprising porous catalyst support particles coated with carbon, with a cobalt salt, and partially drying the impregnated support. Thereafter, in a calcination
A process for preparing a cobalt based catalyst precursor includes, in a support impregnation stage, impregnating a coated catalyst support comprising porous catalyst support particles coated with carbon, with a cobalt salt, and partially drying the impregnated support. Thereafter, in a calcination stage, the partially dried impregnated support is calcined, to obtain the cobalt based catalyst precursor. The cobalt based catalyst precursor can then, in a reduction stage, be reduced to obtain a cobalt based Fischer-Tropsch catalyst.
대표청구항▼
1. A process for preparing a cobalt based catalyst precursor, which process includesin a support impregnation stage, impregnating a coated catalyst support comprising porous catalyst support particles coated with carbon, with a cobalt salt, and partially drying the impregnated support; and in a calc
1. A process for preparing a cobalt based catalyst precursor, which process includesin a support impregnation stage, impregnating a coated catalyst support comprising porous catalyst support particles coated with carbon, with a cobalt salt, and partially drying the impregnated support; and in a calcination stage, calcining the partially dried impregnated support, to obtain the cobalt based catalyst precursor. 2. A process according to claim 1, wherein the amount of carbon present on the support is from 0.1 g carbon/100 g support to 20 g carbon/100 g support.3. A process according to claim 1, wherein the cobalt salt is cobalt nitrate, and wherein the porous catalyst support particles are alumina, silica, silica-alumina, titania or magnesia particles.4. A process according to claim 1, wherein the support is a protected modified catalyst support containing silicon as a modifying component.5. A process according to claim 1, wherein the cobalt catalyst precursor is obtained by a 2-step slurry phase impregnation, drying and calcination process which includes, in a first step, impregnating the carbon coated catalyst support with the cobalt salt, partially drying the impregnated support, and calcining the partially dried support, to obtain a calcined material, and thereafter, in a second step, impregnating the calcined material with the cobalt salt, partially drying the impregnated material, and calcining the partially dried material, to obtain the catalyst precursor.6. A process according to claim 5 wherein, during either or both of the two slurry phase impregnation steps, a water soluble precursor salt of palladium or platinum or a mixture of such salts is added, as a dopant capable of enhancing the reducibility of the cobalt.7. A process for preparing a cobalt based Fischer-Tropsch catalyst, which process includesin a support impregnation stage, impregnating a coated catalyst support comprising porous catalyst support particles coated with carbon, with a cobalt salt, and partially drying the impregnated support; in a calcination stage, calcining the partially dried impregnated support, to obtain a cobalt based catalyst precursor; and in a reduction stage, reducing the cobalt based catalyst precursor to obtain the cobalt based Fischer-Tropsch catalyst. 8. A process according to claim 7, wherein the amount of carbon present on the support is from 0.1 g carbon/100 g support to 20 g carbon/100 g support.9. A process according to claim 7, wherein the cobalt salt is cobalt nitrate, and wherein the porous catalyst support particles are alumina, silica, silica-alumina, titania or magnesia particles.10. A process according to claim 7, wherein the support is a protected modified catalyst support containing silicon as a modifying component.11. A process according to claim 7, wherein the cobalt catalyst precursor is obtained by a 2-step slurry phase impregnation, drying and calcination process which includes, in a first step, impregnating the carbon coated catalyst support with the cobalt salt, partially drying the impregnated support, and calcining the partially dried support, to obtain a calcined material, and thereafter, in a second step, impregnating the calcined material with the cobalt salt, partially drying the impregnated material, and calcining the partially dried material, to obtain the catalyst precursor.12. A process according to claim 11 wherein, during either or both of the two slurry phase impregnation steps, a water soluble precursor salt of palladium or platinum or a mixture of such salts is added, as a dopant capable of enhancing the reducibility of the cobalt.
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이 특허에 인용된 특허 (4)
Espinoza Rafael Luis,ZAX ; Visagie Jacobus Lucas,ZAX ; Van Berge Peter Jacobus,ZAX ; Bolder Franciscus Hermanus,ZAX, Catalysts.
Peter Jacobus van Berge ZA; Jan van de Loosdrecht ZA; Elsie Adriana Caricato ZA; Sean Barradas ZA; Bulelani Humphrey Sigwebela ZA, Impregnation process for catalysts.
Suib, Steven L.; Hu, Boxun; Kreidler, Eric Rolland; Brooks, Christopher James, Fischer-tropsch catalysts containing iron or cobalt selective towards higher hydrocarbons.
Van Berge, Peter Jacobus; Visagie, Jacobus Lucas; Van De Loosdrecht, Jan; Van Der Walt, Tjaart Jurgens; Sollie, Johan Coenraad; Sollie Breur, legal representative, Sylvia; Veltman, Hans Marcel, Process for activating cobalt catalysts.
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