Patents by Inventor Bram Willem Hoffer
Bram Willem Hoffer 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: 9555374Abstract: The present invention relates to a method of conditioning suspended catalysts, wherein at least part of the catalyst-comprising reaction medium is taken from one or more reactors and the suspended, at least partially inactivated catalysts are separated off and purified by means of at least one membrane filtration, with at least one of the membrane filtrations being carried out as a diafiltration.Type: GrantFiled: April 26, 2010Date of Patent: January 31, 2017Assignee: BASF SEInventors: Hartwig Voss, Ekkehard Schwab, Bram Willem Hoffer, Till Gerlach
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Patent number: 9067863Abstract: The present invention relates to a process for preparing amines by reacting sugar alcohols with hydrogen and an aminating agent selected from the group of ammonia and primary and secondary amines in the presence of a catalyst at a temperature of from 100° C. to 400° C. and a pressure of from 1 to 40 MPa (from 10 to 400 bar). The catalyst preferably comprises one metal or a plurality of metals or one or more oxygen compounds of the metals of groups 8 and/or 9 and/or 10 and/or 11 of the Periodic Table of the Elements. The sugar alcohol is preferably obtained by hydrogenating the corresponding sugars. The invention further relates to the use of the reaction products as an additive in cement or concrete production and in other fields of use.Type: GrantFiled: August 15, 2008Date of Patent: June 30, 2015Assignee: BASF SEInventors: Martin Ernst, Bram Willem Hoffer, Johann-Peter Melder
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Patent number: 8765634Abstract: A catalytically active composition comprising, prior to reduction with hydrogen: 10 to 75% by weight of an oxygen compound of zirconium, calculated as ZrO2; 1 to 30% by weight of an oxygen compound of copper, calculated as CuO; 10 to 50% by weight of an oxygen compound of nickel, calculated as NiO; 10 to 50% by weight of an oxygen compound of cobalt, calculated as CoO; and 0.1 to 10% by weight of one or more oxygen compounds of one or more metals selected from the group consisting of Pb, Bi, Sn, Sb and In, calculated as PbO, Bi2O3, SnO, Sb2O3 or In2O3, respectively.Type: GrantFiled: October 11, 2011Date of Patent: July 1, 2014Assignee: BASF SEInventors: Petr Kubanek, Bram Willem Hoffer, Ekkehard Schwab, Johann-Peter Melder, Holger Evers, Till Gerlach
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Patent number: 8632674Abstract: The present invention provides a catalyst mixture comprising FCC catalysts and a metal passivator/trap and use thereof in trapping metal contaminants during the catalytic cracking of hydrocarbon feedstocks.Type: GrantFiled: November 16, 2010Date of Patent: January 21, 2014Assignee: BASF CorporationInventors: Bram Willem Hoffer, David Matheson Stockwell
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Patent number: 8557985Abstract: A process continuously hydrogenating unsaturated compounds, in which particles of a first hydrogenation catalyst are suspended in a liquid phase in which an unsaturated compound is dissolved, the liquid phase, in the presence of a hydrogenous gas at a first partial hydrogen pressure and at a first temperature, is conducted through a packed bubble column reactor in cocurrent counter to the direction of gravity, the effluent from the bubble column reactor is sent to a gas-liquid separation, the liquid phase is sent to a crossfiltration to obtain a retentate and a filtrate, the retentate is recycled into the bubble column reactor and the filtrate, in the presence of a hydrogenous gas at a second partial hydrogen pressure and at a second temperature, is passed over a bed of a second hydrogenation catalyst, the second partial hydrogen pressure is at least 10 bar higher than the first partial hydrogen pressure.Type: GrantFiled: March 19, 2012Date of Patent: October 15, 2013Assignee: BASF SEInventors: Bram Willem Hoffer, Hartwig Voβ, Ekkehard Schwab, Udo Rheude, Gerd Kaibel, Mathias Haake, Jan Eberhardt, Michael Karcher
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Publication number: 20120232267Abstract: A process continuously hydrogenating unsaturated compounds, in which particles of a first hydrogenation catalyst are suspended in a liquid phase in which an unsaturated compound is dissolved, the liquid phase, in the presence of a hydrogenous gas at a first partial hydrogen pressure and at a first temperature, is conducted through a packed bubble column reactor in cocurrent counter to the direction of gravity, the effluent from the bubble column reactor is sent to a gas-liquid separation, the liquid phase is sent to a crossfiltration to obtain a retentate and a filtrate, the retentate is recycled into the bubble column reactor and the filtrate, in the presence of a hydrogenous gas at a second partial hydrogen pressure and at a second temperature, is passed over a bed of a second hydrogenation catalyst, the second partial hydrogen pressure is at least 10 bar higher than the first partial hydrogen pressure.Type: ApplicationFiled: March 19, 2012Publication date: September 13, 2012Applicant: BASF SEInventors: Bram Willem Hoffer, Hartwig Voss, Ekkehard Schwab, Udo Rheude, Gerd Kaibel, Mathias Haake, Jan Eberhardt, Michael Karcher
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Publication number: 20120118793Abstract: The present invention provides a catalyst mixture comprising FCC catalysts and a metal passivator/trap and use thereof in trapping metal contaminants during the catalytic cracking of hydrocarbon feedstocks.Type: ApplicationFiled: November 16, 2010Publication date: May 17, 2012Applicant: BASF CorporationInventors: Bram Willem Hoffer, David Matheson Stockwell
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Patent number: 8163139Abstract: Processes comprising: providing a mixture comprising monoethylene glycol and diethylenetriamine; and subjecting the mixture to extractive distillation with a diethylenetriamine-selective solvent comprising triethylene glycol to provide a first stream comprising monoethylene glycol and a second stream comprising diethylenetriamine; wherein the first stream is substantially free of diethylenetriamine, and wherein the second stream is substantially free of monoethylene glycol.Type: GrantFiled: February 8, 2007Date of Patent: April 24, 2012Assignee: BASF SEInventors: Karin Pickenäcker, Johann-Peter Melder, Bram Willem Hoffer, Thomas Krug, Gunther van Cauwenberge, Frank-Friedrich Pape
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Patent number: 8163963Abstract: A process is described for continuously hydrogenating unsaturated compounds, in which particles of a first hydrogenation catalyst are suspended in a liquid phase in which an unsaturated compound is dissolved, the liquid phase, in the presence of a hydrogenous gas at a first partial hydrogen pressure and at a first temperature, is conducted through a packed bubble column reactor in cocurrent counter to the direction of gravity, the effluent from the bubble column reactor is sent to a gas-liquid separation, the liquid phase is sent to a crossfiltration to obtain a retentate and a filtrate, the retentate is recycled into the bubble column reactor and the filtrate, in the presence of a hydrogenous gas at a second partial hydrogen pressure and at a second temperature, is passed over a bed of a second hydrogenation catalyst, wherein the second partial hydrogen pressure is at least 10 bar higher than the first partial hydrogen pressure.Type: GrantFiled: October 16, 2006Date of Patent: April 24, 2012Assignee: BASF SEInventors: Bram Willem Hoffer, Hartwig Voβ, Ekkehard Schwab, Udo Rheude, Gerd Kaibel, Mathias Haake, Jan Eberhardt, Michael Karcher
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Publication number: 20120071316Abstract: The present invention relates to a method of conditioning suspended catalysts, wherein at least part of the catalyst-comprising reaction medium is taken from one or more reactors and the suspended, at least partially inactivated catalysts are separated off and purified by means of at least one membrane filtration, with at least one of the membrane filtrations being carried out as a diafiltration.Type: ApplicationFiled: April 26, 2010Publication date: March 22, 2012Applicant: BASF SEInventors: Hartwig Voss, Ekkehard Schwab, Bram Willem Hoffer, Till Gerlach
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Publication number: 20120071692Abstract: A process for preparing an aromatic amine by reacting a corresponding aromatic alcohol with an aminating agent selected from the group consisting of ammonia, primary amines and secondary amines, in the presence of hydrogen and a catalyst molding, at a temperature of from 60-300°. The catalyst molding comprises Zr, Pd and Pt and has an annular tablet form with an external diameter in the range from 2-6 mm, a height in the range from 1-4 mm and an internal diameter of from 1-5 mm or a topologically equivalent form with the same volume. Catalyst moldings comprising Zr, Pd and Pt are also provided. The catalyst molding has an annular tablet form with an external diameter in the range from 3-6 mm, a height in the range from 1-4 mm and an internal diameter of from 2-5 mm or a topologically equivalent form.Type: ApplicationFiled: September 16, 2011Publication date: March 22, 2012Applicant: BASF SEInventors: SEBASTIAN AHRENS, Christoph Mueller, Axel Paul, Martin Ernst, Nadja Pollmer, Johann-Peter Melder, Thomas Heidemann, Joachim-Thierry Anders, Bram Willem Hoffer
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PROCESSES FOR PREPARING AMINES AND ZIRCONIUM DIOXIDE- AND NICKELCONTAINING CATALYSTS FOR USE THEREIN
Publication number: 20120035049Abstract: A catalytically active composition comprising, prior to reduction with hydrogen: 10 to 75% by weight of an oxygen compound of zirconium, calculated as ZrO2; 1 to 30% by weight of an oxygen compound of copper, calculated as CuO; 10 to 50% by weight of an oxygen compound of nickel, calculated as NiO; 10 to 50% by weight of an oxygen compound of cobalt, calculated as CoO; and 0.1 to 10% by weight of one or more oxygen compounds of one or more metals selected from the group consisting of Pb, Bi, Sn, Sb and In, calculated as PbO, Bi2O3, SnO, Sb2O3 or In2O3, respectively.Type: ApplicationFiled: October 11, 2011Publication date: February 9, 2012Applicant: BASF SEInventors: Petr Kubanek, Bram Willem Hoffer, Ekkehard Schwab, Johann-Peter Melder, Holger Evers, Till Gerlach -
Publication number: 20110313187Abstract: The present invention relates to a process for improving the catalytic properties of a catalyst comprising one or more elements selected from the group consisting of cobalt, nickel and copper, said catalyst being present in the form of a structured monolith, by contacting the catalyst with one or more basic compounds selected from the group of the alkali metals, alkaline earth metals and rare earth metals. The invention further relates to a process for hydrogenating compounds which comprise at least one unsaturated carbon-carbon, carbon-nitrogen or carbon-oxygen bond in the presence of a catalyst comprising one or more elements selected from the group consisting of cobalt, nickel and copper, said catalyst being present in the form of a structured monolith, by contacting the catalyst with one or more basic compounds selected from the group of the alkali metals, alkaline earth metals and rare earth metals.Type: ApplicationFiled: February 1, 2010Publication date: December 22, 2011Inventors: Christof Wilhelm Wigbers, Jochen Steiner, Martin Ernst, Bram Willem Hoffer, Ekkehard Schwab, Johann-Peter Melder
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Publication number: 20110313188Abstract: The present invention relates to a catalyst comprising one or more elements selected from the group consisting of cobalt, nickel and copper, said catalyst being present in the form of a structured monolith, wherein said catalyst comprises one or more elements selected from the group of the alkali metals, alkaline earth metals and rare earth metals. The invention further relates to processes for preparing the inventive catalyst and to the use of the inventive catalyst in a process for hydrogenating organic substances, especially for hydrogenating nitriles.Type: ApplicationFiled: February 4, 2010Publication date: December 22, 2011Applicant: BASF SEInventors: Christof Wilhelm Wigbers, Jochen Steiner, Martin Ernst, Bram Willem Hoffer, Ekkehard Schwab, Johann-Peter Melder
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Publication number: 20110313186Abstract: The present invention relates to catalysts and processes for preparation thereof, said catalysts being obtainable by contacting a monolithic catalyst support with a suspension which comprises one or more insoluble or sparingly soluble compounds of the elements selected from the group of the elements cobalt, nickel and copper. The invention further relates to the use of the inventive catalyst in a process for hydrogenating organic substances, especially for hydrogenating nitriles, and to a process for hydrogenating organic compounds, which comprises using an inventive catalyst in the process.Type: ApplicationFiled: February 1, 2010Publication date: December 22, 2011Applicant: BASF SEInventors: Christof Wilhelm Wigbers, Jochen Steiner, Martin Ernst, Bram Willem Hoffer, Ekkehard Schwab, Johann-Peter Melder
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Patent number: 8063252Abstract: Processes comprising: (i) providing a reactant selected from the group consisting of primary alcohols, secondary alcohols, aldehydes, ketones and mixtures thereof; and (ii) reacting the reactant with hydrogen and a nitrogen compound selected from the group consisting of ammonia, primary amines, secondary amines and mixtures thereof, in the presence of a catalyst comprising a zirconium dioxide- and nickel-containing catalytically active composition, to form an amine; wherein the catalytically active composition, prior to reduction with hydrogen, comprises oxygen compounds of zirconium, copper, nickel and cobalt, and one or more oxygen compounds of one or more metals selected from the group consisting of Pb, Bi, Sn, Sb and In.Type: GrantFiled: July 4, 2007Date of Patent: November 22, 2011Assignee: BASF SEInventors: Petr Kubanek, Bram Willem Hoffer, Ekkehard Schwab, Johann-Peter Melder, Holger Evers, Till Gerlach
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Patent number: 8034978Abstract: Process for preparing an amine by reacting an aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group consisting of primary and secondary amines in the presence of a heterogeneous catalyst, wherein the reaction is carried out using a suspended catalyst as heterogeneous catalyst and is carried out in the semibatch mode in which the nitrogen compound as one reactant is placed in the reaction vessel and the aldehyde and/or the ketone as the other reactant is added during the course of the reaction and the aldehyde and/or the ketone is added in portions or continuously to the reaction mixture during the course of the reaction as a function of the achieved conversion of the nitrogen compound until a conversion of the nitrogen compound of at least 95% results, and all or part of the catalyst remains in the reaction vessel after the reaction batch and is reused for the next reaction batch.Type: GrantFiled: May 24, 2007Date of Patent: October 11, 2011Assignee: BASF SEInventors: Jan Eberhardt, Harald Meiβner, Bram Willem Hoffer, Johann-Peter Melder, Ekkehard Schwab
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Patent number: 8017808Abstract: A process for preparing an amine by reacting an aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group of primary and secondary amines in the presence of a heterogeneous catalyst, wherein the catalyst is a coated catalyst which comprises at least one metal of group VIII of the Periodic Table of the Elements as a hydrogenating metal and additionally a promoter on an oxidic support, at least 80% of the metal of group VIII of the Periodic Table of the Elements being present in a layer between the surface of the catalyst and a penetration depth which is not more than 80% of the radius of the catalyst, calculated from the surface of the catalyst.Type: GrantFiled: March 13, 2007Date of Patent: September 13, 2011Assignee: BASF SEInventors: Jan Eberhardt, Bram Willem Hoffer, Frank Haese, Johann-Peter Melder, Bernd Stein, Michael Stang, Thomas Hill, Ekkehard Schwab
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Patent number: 7919655Abstract: Processes comprising: (i) providing a reactant selected from the group consisting of primary alcohols, secondary alcohols, aldehydes, ketones and mixtures thereof; and (ii) reacting the reactant with hydrogen and a nitrogen compound selected from the group consisting of ammonia, primary amines, secondary amines and mixtures thereof, in the presence of a catalyst comprising a zirconium dioxide- and nickel-containing catalytically active composition, to form an amine; wherein the catalytically active composition, prior to reduction with hydrogen, comprises oxygen compounds of zirconium, copper, and nickel, and one or more oxygen compounds of one or more metals selected from the group consisting of Sb, Pb, Bi, and In.Type: GrantFiled: July 4, 2007Date of Patent: April 5, 2011Assignee: BASF SEInventors: Petr Kubanek, Bram Willem Hoffer, Ekkehard Schwab, Johann-Peter Melder, Holger Evers, Till Gerlach
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Publication number: 20100267948Abstract: Process for preparing an amine by reacting an aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group consisting of primary and secondary amines in the presence of a heterogeneous catalyst, wherein the reaction is carried out using a suspended catalyst as heterogeneous catalyst and is carried out in the semibatch mode in which the nitrogen compound as one reactant is placed in the reaction vessel and the aldehyde and/or the ketone as the other reactant is added during the course of the reaction and the aldehyde and/or the ketone is added in portions or continuously to the reaction mixture during the course of the reaction as a function of the achieved conversion of the nitrogen compound until a conversion of the nitrogen compound of at least 95% results, and all or part of the catalyst remains in the reaction vessel after the reaction batch and is reused for the next reaction batch.Type: ApplicationFiled: May 24, 2007Publication date: October 21, 2010Applicant: BASF SEInventors: Jan Eberhardt, Harald Meissner, Bram Willem Hoffer, Johann-Peter Melder, Ekkehard Schwab