Patents by Inventor Jan Van De Loosdrecht
Jan Van De Loosdrecht has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11278870Abstract: The present invention relates to catalysts, more particularly to a cobalt-containing catalyst composition. The present invention further relates to a process for preparing a cobalt-containing catalyst precursor, a process for preparing a cobalt-containing catalyst, and a hydrocarbon synthesis process wherein such a catalyst is used. According to a first aspect of the invention, there is provided a cobalt-containing catalyst composition comprising cobalt and/or a cobalt compound supported on and/or in a silica (SiO2) catalyst support wherein the average pore diameter of the catalyst support is more than 20 nm but less than 50 nm; the catalyst composition also including a titanium compound on and/or in the catalyst support, and a manganese compound on and/or in the catalyst support.Type: GrantFiled: June 22, 2017Date of Patent: March 22, 2022Assignee: Sasol South Africa LimitedInventors: Jan Mattheus Botha, Denzil James Moodley, Jana Heloise Potgieter, Hendrik Van Rensburg, Jan Van De Loosdrecht, Prabashini Moodley
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Publication number: 20210213428Abstract: The present invention relates to catalysts, more particularly to a cobalt-containing catalyst composition. The present invention further relates to a process for preparing a cobalt-containing catalyst precursor, a process for preparing a cobalt-containing catalyst, and a hydrocarbon synthesis process wherein such a catalyst is used. According to a first aspect of the invention, there is provided a cobalt-containing catalyst composition comprising cobalt and/or a cobalt compound supported on and/or in a silica (SiO2) catalyst support wherein the average pore diameter of the catalyst support is more than 20 nm but less than 50 nm; the catalyst composition also including a titanium compound on and/or in the catalyst support, and a manganese compound on and/or in the catalyst support.Type: ApplicationFiled: June 22, 2017Publication date: July 15, 2021Inventors: Jan Mattheus BOTHA, Denzil James MOODLEY, Jana Heloise POTGIETER, Hendrik VAN RENSBURG, Jan VAN DE LOOSDRECHT, Prabashini MOODLEY
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Patent number: 9205409Abstract: 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 subjecting the loaded catalyst support to heat treatment by heating the loaded catalyst support to a temperature, T, of at least 220° C. at a heating rate below 10° C./minute, and effecting gas flow at a space velocity of at least 9 m3n/kg cobalt compound/hour over the loaded catalyst support during at least part of the heating. The cobalt-containing hydrocarbon synthesis catalyst precursor is thereby produced.Type: GrantFiled: April 25, 2012Date of Patent: December 8, 2015Assignee: SASOL TECHNOLOGY (PROPRIETARY) LIMITEDInventors: Cornelia Carolina Eloff, Jan Van De Loosdrecht, Jacobus Lucas Visagie, Hendrik Van Rensburg
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Patent number: 8809215Abstract: A process for regenerating a spent cobalt Fischer-Tropsch synthesis catalyst includes subjecting a spent particulate cobalt Fischer-Tropsch synthesis catalyst sequentially to a dewaxing treatment, an oxidation treatment at a pressure of 4 to 30 bar(a) and a reduction treatment, thereby regenerating the catalyst.Type: GrantFiled: May 9, 2008Date of Patent: August 19, 2014Assignee: Sasol Technology (Proprietary) LimitedInventors: Jan Van De Loosdrecht, Abdool Muthalib Saib
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Patent number: 8773118Abstract: A magnetometer which includes an elongate reactor in which a sample can be secured in a sample support zone and which is located within a magnetic field space of a magnetic field generator and one or more signal pickup coils. Movement generating means is provided for generating relative movement in a generally linear direction between the reactor and at least one of the magnetic field and pickup coil, preferably by moving the reactor in its length. The magnetometer is characterised in that the reactor is a metal tube having a length which permits its ends to remain external of the signal pickup device during the relative movement.Type: GrantFiled: July 10, 2009Date of Patent: July 8, 2014Assignee: University of Cape TownInventors: Michael Christian Maximilian Claeys, Eric Wilhelmus Josephus Van Steen, Jacobus Lucas Visagie, Jan van de Loosdrecht
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Patent number: 8680162Abstract: A process for regenerating a spent particulate wax-containing cobalt-based Fischer-Tropsch synthesis catalyst is provided. The process includes subjecting the spent wax-containing catalyst sequentially to a dewaxing treatment, an oxidation treatment and a reduction treatment. During the dewaxing treatment, the spent wax-containing catalyst is at least partially dewaxed, with dewaxed catalyst particles being produced. During the oxidation treatment, an oxygen-containing gas is passed through a bed of the dewaxed catalyst particles at an operating temperature T° C. where 150<T<450, and the operating temperature is controlled by removing heat from the catalyst particle bed using a cooling device, to obtain oxidized catalyst particles. During the reduction treatment, the oxidized catalyst particles are reduced, thereby regenerating the catalyst.Type: GrantFiled: November 13, 2009Date of Patent: March 25, 2014Assignee: Sasol Technology (Proprietary) LimitedInventors: Jan Van De Loosdrecht, Willem Adriaan Booysen
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Publication number: 20140080929Abstract: 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 subjecting the loaded catalyst support to heat treatment by heating the loaded catalyst support to a temperature, T, of at least 220° C. at a heating rate below 10° C./minute, and effecting gas flow at a space velocity of at least 9 m3n/kg cobalt compound/hour over the loaded catalyst support during at least part of the heating. The cobalt-containing hydrocarbon synthesis catalyst precursor is thereby produced.Type: ApplicationFiled: April 25, 2012Publication date: March 20, 2014Applicant: SASOL TECHNOLOGY (PROPRIETARY) LIMITEDInventors: Cornelia Carolina Eloff, Jan Van De Loosdrecht, Jacobus Lucas Visagie, Hendrik Van Rensburg
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Patent number: 8394864Abstract: A process for preparing a cobalt based Fischer-Tropsch synthesis catalyst precursor includes introducing a multi-functional carboxylic acid having the general formula (1) HOOC—C*R1C*R2—COOH (1) or a precursor thereof, where C* in each of C*Ri and C*R2 is a sp2 carbon, and R1 and R2 are the same or different, and are each selected from the group consisting of hydrogen and an organic group, into and/or onto a particulate catalyst support. The ratio of the quantity of multifunctional carboxylic acid used relative to the support surface area is at least 0.3 ?mol carboxylic acid/m2 of support surface area. Simultaneously with the introduction of the carboxylic acid into and/or onto the catalyst support, or subsequent thereto, a cobalt compound is introduced into and/or onto the catalyst support. The impregnated support is calcined to obtain the cobalt based Fischer-Tropsch synthesis catalyst precursor.Type: GrantFiled: April 3, 2009Date of Patent: March 12, 2013Assignee: Sasol Technology (Proprietary) LimitedInventors: Jan Van De Loosdrecht, Michael Steven Datt, Jan Mattheus Botha
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Patent number: 8067333Abstract: 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, T1, where 80° C.?T1?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, t1, where t1 is 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, T2. The partially reduced precursor is maintained at T2 for a time, t2, where t2 is from 0 to 20 hours, to obtain an activated catalyst.Type: GrantFiled: May 5, 2008Date of Patent: November 29, 2011Assignee: Sasol Technology (Proprietary) LimitedInventors: Jacobus Lucus Visagie, Jan Mattheus Botha, Johannes Gerhardus Koortzen, Michael Steven Datt, Alta Bohmer, Jan Van De Loosdrecht, Abdool Muthalib Saib
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Patent number: 8062992Abstract: 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, T1, where 80° C.?T1?180° C., to obtain a partially treated precursor. In a second activation stage, the partially treated precursor is treated with a reducing gas, at a heating rate, HR2, where 0?HR2<HR1, for a time, t1, where t1 is 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, T2. The partially reduced precursor is maintained at T2 for a time, t2, where t2 is from 0 to 20 hours, to obtain an activated catalyst.Type: GrantFiled: May 5, 2008Date of Patent: November 22, 2011Assignee: Sasol Technology (Proprietary) LimitedInventors: Jacobus Lucus Visagie, Jan Mattheus Botha, Johannes Gerhardus Koortzen, Michael Steven Datt, Alta Bohmer, Jan Van De Loosdrecht, Abdool Muthalib Saib
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Publication number: 20110245355Abstract: A process for regenerating a spent particulate wax-containing cobalt-based Fischer-Tropsch synthesis catalyst is provided. The process includes subjecting the spent wax-containing catalyst sequentially to a dewaxing treatment, an oxidation treatment and a reduction treatment. During the dewaxing treatment, the spent wax-containing catalyst is at least partially dewaxed, with dewaxed catalyst particles being produced. During the oxidation treatment, an oxygen-containing gas is passed through a bed of the dewaxed catalyst particles at an operating temperature T° C. where 150<T<450, and the operating temperature is controlled by removing heat from the catalyst particle bed using a cooling device, to obtain oxidized catalyst particles. During the reduction treatment, the oxidized catalyst particles are reduced, thereby regenerating the catalyst.Type: ApplicationFiled: November 13, 2009Publication date: October 6, 2011Applicant: SASOL TECHNOLOGY (PROPRIETARY) LIMITEDInventors: Jan Van De Loosdrecht, Willem Adriaan Booysen
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Publication number: 20110204884Abstract: A magnetometer which includes an elongate reactor in which a sample can be secured in a sample support zone and which is located within a magnetic field space of a magnetic field generator and one or more signal pickup coils. Movement generating means is provided for generating relative movement in a generally linear direction between the reactor and at least one of the magnetic field and pickup coil, preferably by moving the reactor in its length. The magnetometer is characterised in that the reactor is a metal tube having a length which permits its ends to remain external of the signal pickup device during the relative movement.Type: ApplicationFiled: July 10, 2009Publication date: August 25, 2011Applicant: University of Cape TownInventors: Michael Christian Maximilian Claeys, Eric Wilhelmus Josephus Van Steen, Jacobus Lucas Visagie, Jan van de Loosdrecht
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Publication number: 20110028575Abstract: A process for preparing a cobalt based Fischer-Tropsch synthesis catalyst precursor includes introducing a multi-functional carboxylic acid having the general formula (1) HOOC—C*R1C*R2—COOH (1) or a precursor thereof, where C* in each of C*Ri and C*R2 is a sp2 carbon, and R1 and R2 are the same or different, and are each selected from the group consisting of hydrogen and an organic group, into and/or onto a particulate catalyst support. The ratio of the quantity of multifunctional carboxylic acid used relative to the support surface area is at least 0.3 ?mol carboxylic acid/m2 of support surface area. Simultaneously with the introduction of the carboxylic acid into and/or onto the catalyst support, or subsequent thereto, a cobalt compound is introduced into and/or onto the catalyst support. The impregnated support is calcined to obtain the cobalt based Fischer-Tropsch synthesis catalyst precursor.Type: ApplicationFiled: April 3, 2009Publication date: February 3, 2011Applicant: SASOL TECHNOLOGY (PROPRIETARY) LIMITEDInventors: Jan Van De Loosdrecht, Michael Steven Datt, Jan Mattheus Botha
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Publication number: 20100304955Abstract: A process for regenerating a spent cobalt Fischer-Tropsch synthesis catalyst includes subjecting a spent particulate cobalt Fischer-Tropsch synthesis catalyst sequentially to a dewaxing treatment, an oxidation treatment at a pressure of 4 to 30 bar(a) and a reduction treatment, thereby regenerating the catalyst.Type: ApplicationFiled: May 9, 2008Publication date: December 2, 2010Applicant: Sasol Technology (Proprietary) LimitedInventors: Jan Van De Loosdrecht, Abdool Muthalib Saib
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Publication number: 20100152035Abstract: 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, T1, where 80° C.?T1?180° C., to obtain a partially treated precursor. In a second activation stage, the partially treated precursor is treated with a reducing gas, at a heating rate, HR2, where 0?HR2<HR1, for a time, t1, where t1 is 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, T2. The partially reduced precursor is maintained at T2 for a time, t2, where t2 is from 0 to 20 hours, to obtain an activated catalyst.Type: ApplicationFiled: May 5, 2008Publication date: June 17, 2010Applicant: SASOL TECHNOLOGY (PROPRIETARY) LIMITEDInventors: Jacobus Lucus Visagie, Jan Mattheus Botha, Johannes Gerhardus Koortzen, Michael Steven Datt, Alta Bohmer, Jan Van De Loosdrecht, Abdool Muthalib Saib
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Publication number: 20100144520Abstract: 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, T1, where 80° C.?T1?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, t1, where t1 is 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, T2. The partially reduced precursor is maintained at T2 for a time, t2, where t2 is from 0 to 20 hours, to obtain an activated catalyst.Type: ApplicationFiled: May 5, 2008Publication date: June 10, 2010Applicant: SASOL TECHNOLOGY (PROPRIETARY) LIMITEDInventors: Jacobus Lucus Visagie, Jan Mattheus Botha, Johannes Gerhardus Koortzen, Michael Steven Datt, Alta Bohmer, Jan Van De Loosdrecht, Abdool Muthalib Saib
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Patent number: 7592289Abstract: A particulate pre-reduction cobalt supported Fischer-Tropsch synthesis catalyst precursor which comprises a catalyst support impregnated with cobalt, is treated with a pure hydrogen reducing gas, at a first specific feed gas space velocity, SV1, and at a first heating rate, HR1, to obtain a partially reduced precursor. The support contains reducible cobalt oxide in a calcined state and having a formula-unit in which each mole of cobalt atoms is associated with more than 4/3 moles of oxygen atoms and displaying a reducible cobalt oxide specific surface area at least equal to that of Co3O4 spinel. The partially reduced precursor is then treated with a pure hydrogen reducing gas, at a second specific feed gas space velocity, SV2, and at a second heating rate, HR2, to obtain an activated supported Fischer-Tropsch catalyst, with SV2?SV1 and/or HR2?HR1; however, when SV2=SV1, HR2?HR1 and when HR2=HR1, SV2?SV1.Type: GrantFiled: October 25, 2002Date of Patent: September 22, 2009Assignees: Sasol Technology (Proprietary) Limited, Engelhard De Meern B.V.Inventors: Peter Jacobus Van Berge, Jacobus Lucas Visagie, Jan Van De Loosdrecht, Tjaart Jurgens Van Der Walt, Johan Coenraad Sollie, Sylvia Sollie-Breur, legal representative, Hans Marcel Veltman
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Patent number: 7375055Abstract: 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.Type: GrantFiled: November 27, 2002Date of Patent: May 20, 2008Assignee: Sasol Technology (Proprietary Limited)Inventors: Peter Jacobus Van Berge, Jan Van De Loosdrecht, Jacobus Lucas Visagie
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Patent number: 7262225Abstract: A process for preparing and using a cobalt slurry phase Fischer-Tropsch synthesis catalyst includes introducing a modifying component Mc into a catalyst support precursor, followed by shaping and calcination, to obtain a catalyst support. The catalyst support is impregnated with an aqueous solution of a cobalt salt, to form an impregnated support which is partially dried and calcined, to obtain a catalyst precursor. The catalyst precursor is reduced to form a cobalt slurry phase Fischer-Tropsch synthesis catalyst. A synthesis gas is contacted with this catalyst in a slurry phase Fischer-Tropsch synthesis reaction at elevated temperature and elevated pressure, and a clean wax product that contains less than 50 mass ppm submicron particulates of cobalt is obtained.Type: GrantFiled: July 26, 2002Date of Patent: August 28, 2007Assignee: Sasol Technology (Proprietary) LimitedInventors: Peter Jacobus Van Berge, Jan Van De Loosdrecht, Sean Barradas
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Publication number: 20050227866Abstract: A particulate pre-reduction cobalt supported Fischer-Tropsch synthesis catalyst precursor which comprises a catalyst support impregnated with cobalt, is treated with a pure hydrogen reducing gas, at a first specific feed gas space velocity, SV1, and at a first heating rate, HR1, to obtain a partially reduced precursor. The support contains reducible cobalt oxide in a calcined state and having a formula-unit in which each mole of cobalt atoms is associated with more than 4/3 moles of oxygen atoms and displaying a reducible cobalt oxide specific surface area at least equal to that of Co3O4 spinel. The partially reduced precursor is then treated with a pure hydrogen reducing gas, at a second specific feed gas space velocity, SV2, and at a second heating rate, HR2, to obtain an activated supported Fischer-Tropsch catalyst, with SV2?SV1 and/or HR2?HR1; however, when SV2=SV1, HR2?HR1 and when HR2=HR1, SV2?SV1.Type: ApplicationFiled: October 25, 2002Publication date: October 13, 2005Inventors: Peter Berge, Jacobus Visagie, Jan Van De Loosdrecht, Tjaart Van Der Walt, Johan Sollie, Hans Veltman, Sylvia Breur