Patents by Inventor Tobias Rosendahl
Tobias Rosendahl 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: 9468906Abstract: The present invention relates to a porous inorganic body comprising pores A having a pore size SA in the range of from 0.005 to 20 micrometer and a total pore volume VA, and comprising pores B having a pore size SB in the range of from more than 20 to 1000 micrometer and a total pore volume VB, wherein the total pore volume of the pores having a pore size in the range of from 0.005 to 1000 micrometer is VC and wherein the ratio RA=VA/VC is in the range of from 0.3 to 0.7 as determined via mercury intrusion porosimetry.Type: GrantFiled: February 28, 2013Date of Patent: October 18, 2016Assignee: BASF SEInventors: Christian Baltes, Tobias Rosendahl, Igor Shishkov, Torsten Mäurer, Wolfgang Rohde, Martin Kraus, Norbert Güntherberg, Isa Alexandra Queiroz Da Fonseca, Alfons Jochum, Siegbert Bouche
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Patent number: 9346035Abstract: Supported noble metal-comprising catalysts which can be obtained by a1) application of a noble metal compound, optionally in admixture with additives acting as promoters, to a support material, then drying, and a2) application of a reducing agent to a support material, then drying, wherein steps a1) and a2) are repeated simultaneously or in alternating turns, or wherein either of the compounds is applied entirely and then the other one is applied entirely, b) optionally afterwards drying of the resulting product, and c) subsequent calcination, its use, especially for oxidative dehydrogenation and a process for producing it.Type: GrantFiled: July 31, 2013Date of Patent: May 24, 2016Assignee: BASF SEInventors: Sabine Huber, Tobias Rosendahl, Georg Seeber, Christian Baltes
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Patent number: 9199223Abstract: Process for producing a supported silver catalyst, which comprises (a) reacting oxalic acid with an alkali metal base in a solvent, preferably water, to the second equivalence point of oxalic acid to give alkali metal oxalate; (b) reacting the alkali metal oxalate obtained according to (a) with silver salt in a solvent, preferably water, to give silver oxalate; (c) forming a complexation of the silver oxalate obtained according to (b) with a diamine compound in a solvent, preferably water, to give a diamine-silver oxalate complex.Type: GrantFiled: February 25, 2015Date of Patent: December 1, 2015Assignee: BASF SEInventors: Tobias Rosendahl, Torsten Mäurer, Cornelia K. Dobner, Andreas Lehr, Johanna Wanka
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Patent number: 9079154Abstract: The present invention relates to a catalyst for preparing alkylene oxides, which is a supported silver catalyst having a novel promoter combination. The present invention further relates to a process for producing the catalyst and the use of the catalyst for the oxidation of alkylenes to alkylene oxides. In addition, the present invention relates to a process for preparing ethylene oxide from ethylene, which comprises the oxidation of ethylene in the presence of the stated catalyst.Type: GrantFiled: April 29, 2013Date of Patent: July 14, 2015Assignee: BASF SEInventors: Tobias Rosendahl, Torsten Mäurer, Dirk Hensel, Andreas Lehr
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Publication number: 20150174556Abstract: Process for producing a supported silver catalyst, which comprises (a) reacting oxalic acid with an alkali metal base in a solvent, preferably water, to the second equivalence point of oxalic acid to give alkali metal oxalate; (b) reacting the alkali metal oxalate obtained according to (a) with silver salt in a solvent, preferably water, to give silver oxalate; (c) forming a complexation of the silver oxalate obtained according to (b) with a diamine compound in a solvent, preferably water, to give a diamine-silver oxalate complex.Type: ApplicationFiled: February 25, 2015Publication date: June 25, 2015Inventors: TOBIAS ROSENDAHL, Torsten Mäurer, Cornelia K. Dobner, Andreas Lehr, Johanna Wanka
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Publication number: 20150151278Abstract: Supported noble metal-comprising catalysts which can be obtained by a1) application of a noble metal compound, optionally in admixture with additives acting as promoters, to a support material, then drying, and a2) application of a reducing agent to a support material, then drying, wherein steps a1) and a2) are repeated simultaneously or in alternating turns, or wherein either of the compounds is applied entirely and then the other one is applied entirely, b) optionally afterwards drying of the resulting product, and c) subsequent calcination, its use, especially for oxidative dehydrogenation and a process for producing it.Type: ApplicationFiled: July 31, 2013Publication date: June 4, 2015Applicant: BASF SEInventors: Sabine Huber, Tobias Rosendahl, Georg Seeber, Christian Baltes
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Patent number: 8987482Abstract: Process for producing a supported silver catalyst, which comprises (a) reacting oxalic acid with an alkali metal base in a solvent, preferably water, to the second equivalence point of oxalic acid to give alkali metal oxalate; (b) reacting the alkali metal oxalate obtained according to (a) with silver salt in a solvent, preferably water, to give silver oxalate; (c) forming a complexation of the silver oxalate obtained according to (b) with a diamine compound in a solvent, preferably water, to give a diamine-silver oxalate complex.Type: GrantFiled: October 26, 2012Date of Patent: March 24, 2015Assignee: BASF SEInventors: Tobias Rosendahl, Torsten Mäurer, Cornelia Katharina Dobner, Andreas Lehr, Johanna Wanka
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Patent number: 8933254Abstract: This invention relates to a process, comprising reacting ethylene and oxygen or a source of oxygen in the presence of a catalyst in a reactor to form a product comprising ethylene oxide, wherein the catalyst contains silver or silver compound and a support and the catalyst is in the form of particulate solids having a mean particle diameter from 1 to 1000 ?m and wherein the molar ratio of oxygen to ethylene is from 1:4 to 10:1.Type: GrantFiled: July 13, 2009Date of Patent: January 13, 2015Assignee: BASF SEInventors: Radwan Abdallah, Torsten Mäurer, Tobias Rosendahl, Frank Rosowski, Gerhard Theis, Terry Mazanec, Soumitra Deshmukh, Laura J. Silva
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Patent number: 8921587Abstract: The present invention relates to a shaped catalyst body for preparing ethylene oxide, which comprises at least silver and rhenium applied to an alumina support, and also to a process for producing it, wherein the alumina support has the geometry of a hollow cylinder and the shaped catalyst body has a rhenium content CR and CR/ppm by weight, based on the wall thickness of the hollow cylinder dW in mm, and calculated as element, in the range 120?CR/dW?200.Type: GrantFiled: April 13, 2012Date of Patent: December 30, 2014Assignee: BASF SEInventors: Tobias Rosendahl, Torsten Mäurer, Cornelia Katharina Dobner
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Patent number: 8629079Abstract: The invention relates to a process for producing a catalyst for the oxidation of ethylene to ethylene oxide, which comprises a) providing a support which comprises alumina and has been impregnated with silver or with a silver-comprising compound and has a temperature T0; and b) heating the impregnated support from the temperature T0 to a temperature T1 at a heating rate of at least 30 K/min, and also the catalyst itself which can be obtained by this process.Type: GrantFiled: April 13, 2012Date of Patent: January 14, 2014Assignee: BASF SEInventors: Tobias Rosendahl, Torsten Mäurer, Cornelia Katharina Dobner, Thomas Geiger, Achim Gritsch
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Patent number: 8604252Abstract: Supported noble metal-comprising catalysts which can be obtained by a) application of colloidal noble metal in the form of a colloidal solution, optionally in admixture with additives acting as promoters, to a support material, b1) drying of the resulting product at from 150 to 350° C., or b2) drying of the resulting product at from 150 to 350° C. and subsequent calcination at from 350 to 550° C. for epoxidation or oxidative dehydrogenation, a process for producing it, its use and also the use of colloidal noble metal for producing supported catalysts.Type: GrantFiled: June 7, 2010Date of Patent: December 10, 2013Assignee: BASF SEInventors: Georg Seeber, Peter Löchner, Stefan Bauer, Tobias Rosendahl, Torsten Mäurer, Günter Wegner, Martin Kamasz
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Publication number: 20130296587Abstract: The present invention relates to a catalyst for preparing alkylene oxides, which is a supported silver catalyst having a novel promoter combination. The present invention further relates to a process for producing the catalyst and the use of the catalyst for the oxidation of alkylenes to alkylene oxides. In addition, the present invention relates to a process for preparing ethylene oxide from ethylene, which comprises the oxidation of ethylene in the presence of the stated catalyst.Type: ApplicationFiled: April 29, 2013Publication date: November 7, 2013Applicant: BASF SEInventors: Tobias Rosendahl, Torsten Mäurer, Dirk Hensel, Andreas Lehr
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Patent number: 8568677Abstract: The present invention relates to the use of a zeolite catalyst comprising at least one transition metal and in addition sulfur and/or phosphorus atoms for reducing the content of nitrogen oxides in a gas, and also to a process for reducing the content of nitrogen oxides in a gas by bringing this gas into contact with such a zeolite catalyst.Type: GrantFiled: October 12, 2011Date of Patent: October 29, 2013Assignee: BASF SEInventors: Stephan Deuerlein, Tobias Rosendahl
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Publication number: 20130231493Abstract: The present invention relates to a porous inorganic body comprising pores A having a pore size SA in the range of from 0.005 to 20 micrometer and a total pore volume VA, and comprising pores B having a pore size SB in the range of from more than 20 to 1000 micrometer and a total pore volume VB, wherein the total pore volume of the pores having a pore size in the range of from 0.005 to 1000 micrometer is VC and wherein the ratio RA=VA/VC is in the range of from 0.3 to 0.7 as determined via mercury intrusion porosimetry.Type: ApplicationFiled: February 28, 2013Publication date: September 5, 2013Applicant: BASF SEInventors: Igor Shishkov, Torsten Mäurer, Christian Baltes, Tobias Rosendahl, Wolfgang Rohde, Martin Kraus, Norbert Güntherberg, Isa Alexandra Queiroz Da Fonseca, Alfons Jochum, Siegbert Bouche
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Publication number: 20120264951Abstract: The invention relates to a process for producing a catalyst for the oxidation of ethylene to ethylene oxide, which comprises a) providing a support which comprises alumina and has been impregnated with silver or with a silver-comprising compound and has a temperature T0; and b) heating the impregnated support from the temperature T0 to a temperature T1 at a heating rate of at least 30 K/min, and also the catalyst itself which can be obtained by this process.Type: ApplicationFiled: April 13, 2012Publication date: October 18, 2012Applicant: BASF SEInventors: Tobias Rosendahl, Torsten Mäurer, Cornelia Katharina Dobner, Thomas Geiger, Achim Gritsch
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Publication number: 20120264953Abstract: Process for preparing a catalyst for preparing ethylene oxide, which comprises silver and zinc applied to a support, where the process comprises at least (i) providing a support, (ii) applying zinc to the support according to (i) in an amount of from 10 ppm to 1500 ppm, in each case calculated as element and based on the total weight of the support according to (i), by bringing the support into contact with at least one mixture G1 comprising at least one zinc compound, (iii) drying and/or calcining the support obtained according to (ii), (iv) applying silver to the dried and/or calcined support by bringing the support into contact with at least one mixture G2 comprising at least one silver compound.Type: ApplicationFiled: April 13, 2012Publication date: October 18, 2012Applicant: BASF SEInventors: Tobias Rosendahl, Torsten Mäurer, Cornelia Katharina Dobner, Jürgen Zühlke
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Publication number: 20120264954Abstract: The present invention relates to a shaped catalyst body for preparing ethylene oxide, which comprises at least silver and rhenium applied to an alumina support, and also to a process for producing it, wherein the alumina support has the geometry of a hollow cylinder and the shaped catalyst body has a rhenium content CR and CR/ppm by weight, based on the wall thickness of the hollow cylinder dW in mm, and calculated as element, in the range 120?CR/dW?200.Type: ApplicationFiled: April 13, 2012Publication date: October 18, 2012Applicant: BASF SEInventors: Tobias Rosendahl, Torsten Mäurer, Cornelia Katharina Dobner
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Publication number: 20120264952Abstract: Catalyst for preparing ethylene oxide, at least comprising silver applied to a support, the support having a BET constant C in the range from 0 to 800, determined in accordance with DIN ISO 9277.Type: ApplicationFiled: April 13, 2012Publication date: October 18, 2012Applicant: BASF SEInventors: Tobias Rosendahl, Torsten Mäurer, Cornelia Katharina Dobner, Jürgen Zühlke
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Publication number: 20120108831Abstract: Supported noble metal-comprising catalysts which can be obtained by a) application of colloidal noble metal in the form of a colloidal solution, optionally in admixture with additives acting as promoters, to a support material, b1) drying of the resulting product at from 150 to 350° C., or b2) drying of the resulting product at from 150 to 350° C. and subsequent calcination at from 350 to 550° C. for epoxidation or oxidative dehydrogenation, a process for producing it, its use and also the use of colloidal noble metal for producing supported catalysts.Type: ApplicationFiled: June 7, 2010Publication date: May 3, 2012Applicant: BASF SEInventors: Georg Seeber, Peter Löchner, Stefan Bauer, Tobias Rosendahl, Torsten Mäurer, Günter Wegner, Martin Kamasz
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Publication number: 20120087851Abstract: The present invention relates to the use of a zeolite catalyst comprising at least one transition metal and in addition sulfur and/or phosphorus atoms for reducing the content of nitrogen oxides in a gas, and also to a process for reducing the content of nitrogen oxides in a gas by bringing this gas into contact with such a zeolite catalyst.Type: ApplicationFiled: October 12, 2011Publication date: April 12, 2012Applicant: BASF SEInventors: Stephan Deuerlein, Tobias Rosendahl