Patents by Inventor Cornelia Dobner
Cornelia Dobner 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: 9714227Abstract: The present invention relates to a catalyst for the epoxidation of alkenes, comprising silver, rhenium, cesium, lithium, tungsten and sulfur on a support. 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 with oxygen in the presence of said catalyst.Type: GrantFiled: December 1, 2014Date of Patent: July 25, 2017Inventors: Joseph J. Zakzeski, Marco Bosch, Cornelia Dobner, Christian Bartosch, Jürgen Zühlke
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Publication number: 20160113283Abstract: The present invention relates to the use of vanadium-containing particles as a biocide, in particular to the use of vanadium-containing particles comprising at least one vanadium compound and a support material or of a support material in which some metal atoms from the crystal lattice have been replaced by vanadium. Furthermore, it relates to method for preventing biofouling of a substrate and to a method of imparting biocidal properties to the surface of a substrate.Type: ApplicationFiled: November 26, 2013Publication date: April 28, 2016Inventors: Nico F. FISCHER, Cornelia DOBNER, Michael BRÄU
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Patent number: 9067187Abstract: The present invention relates to a process for gas-phase oxidation, in which a gaseous stream comprising an aromatic hydrocarbon and molecular oxygen is passed through two or more catalyst zones. Furthermore, the present invention relates to a catalyst system for gas-phase reaction using a preliminary zone.Type: GrantFiled: August 16, 2012Date of Patent: June 30, 2015Assignee: BASF SEInventors: Hagen Wilmer, Jürgen Zühlke, Thomas Lautensack, Hans-Martin Allmann, Frank Rosowski, Cornelia Dobner
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Patent number: 8517180Abstract: A process for charging a reactor with a fixed catalyst bed which comprises at least one annular shaped support catalyst body K, in which, before the charging, fragments formed in the preparation of the shaped catalyst bodies K are removed by screening.Type: GrantFiled: June 13, 2008Date of Patent: August 27, 2013Assignee: BASF SEInventors: Andreas Raichle, Holger Borchert, Klaus Joachim Mueller-Engel, Hagen Wilmer, Cornelia Dobner, Ulrich Cremer
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Publication number: 20130039821Abstract: The present invention relates to a process for gas-phase oxidation, in which a gaseous stream comprising an aromatic hydrocarbon and molecular oxygen is passed through two or more catalyst zones. Furthermore, the present invention relates to a catalyst system for gas-phase reaction using a preliminary zone.Type: ApplicationFiled: August 16, 2012Publication date: February 14, 2013Applicant: BASF SE*Inventors: Hagen Wilmer, Jürgen Zühlke, Thomas Lautensack, Hans-Martin Allmann, Frank Rosowski, Cornelia Dobner
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Patent number: 8263789Abstract: The present invention relates to a process for gas-phase oxidation, in which a gaseous stream comprising an aromatic hydrocarbon and molecular oxygen is passed through two or more catalyst zones. Furthermore, the present invention relates to a catalyst system for gas-phase reaction using a preliminary zone.Type: GrantFiled: December 12, 2007Date of Patent: September 11, 2012Assignee: BASF SEInventors: Hagen Wilmer, Jürgen Zühlke, Thomas Lautensack, Hans-Martin Allmann, Frank Rosowski, Cornelia Dobner
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Publication number: 20110028740Abstract: What is described is a method for starting a gas phase oxidation reactor that contains a bed of a first catalyst whose active material comprises a catalytically active silver-vanadium oxide bronze, and at least one bed of a second catalyst whose catalytically active material comprises vanadium pentoxide and titanium dioxide, and whose temperature is controllable by means of a heat transfer medium. In the operating state, a gas stream which comprises a loading cop of a hydrocarbon and molecular oxygen is passed through the reactor over the bed of the first and second catalyst at a temperature Top of the heat transfer medium. For the startup, a) a gas stream is passed through the reactor with a starting loading c0 which is less than cop, and at a starting temperature T0 of the heat transfer medium which is less than Top, and b) the temperature of the heat transfer medium is brought to Top and the loading of the gas stream to cop.Type: ApplicationFiled: April 7, 2009Publication date: February 3, 2011Applicant: BASF SEInventors: Cornelia Dobner, Ulf Dietrich, Thomas Mackewitz, Sebastian Storck, Hagen Wilmer, Frank Rosowski, Andreas Tenten
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Publication number: 20100029955Abstract: The present invention relates to a process for gas-phase oxidation, in which a gaseous stream comprising an aromatic hydrocarbon and molecular oxygen is passed through two or more catalyst zones. Furthermore, the present invention relates to a catalyst system for gas-phase reaction using a preliminary zone.Type: ApplicationFiled: December 12, 2007Publication date: February 4, 2010Applicant: BASF SEInventors: Hagen Wilmer, Jürgen Zühlke, Thomas Lautensack, Hans-Martin Allmann, Frank Rosowski, Cornelia Dobner
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Publication number: 20090318712Abstract: Catalyst systems for preparing carboxylic acids and/or anhydrides, the catalyst system comprising a reaction zone and a layered catalyst, the reaction zone comprises a gas inlet region and a gas outlet region, the layered catalyst comprises an active composition and one or more middle layers, one or more first layers disposed on a side of the one or more middle layers toward the gas inlet region, and one or more second layers on a side of the one or more middle layers toward the gas outlet region, wherein the active composition content of one or more of the middle catalyst layers, based on total mass of the layered catalyst, is lower than the active composition content of the one or more first catalyst layers and is lower than one or more second catalyst layers; and processes for gas phase oxidation employing a layered catalyst of the present invention.Type: ApplicationFiled: June 6, 2007Publication date: December 24, 2009Applicant: BASF SEInventors: Hagen Wilmer, Cornelia Dobner, Tina Einfeld, Sebastian Storck, Jürgen Zühlke, Frank Rosowski
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Publication number: 20090286999Abstract: The present invention relates to a catalyst system for preparing carboxylic acids and/or carboxylic anhydrides which has at least three catalyst layers arranged one on top of the other in the reaction tube, with the proviso that the most inactive catalyst layer is preceded in the upstream direction by a more active catalyst layer. The invention further relates to a process for gas phase oxidation in which a gaseous stream which comprises one hydrocarbon and molecular oxygen is passed through a plurality of catalyst layers, the least active catalyst layer being upstream of a more active catalyst layer.Type: ApplicationFiled: April 5, 2007Publication date: November 19, 2009Applicant: BASF SEInventors: Hagen Wilmer, Cornelia Dobner, Frank Rosowski, Jürgen Zühlke, Sebastian Storck, Hans-Martin Allmann, Thomas Lautensack
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Publication number: 20090163726Abstract: The present invention relates to a catalyst system for preparing carboxylic acids and/or carboxylic anhydrides which has at least four catalyst layers arranged one on top of another in the reaction tube, the ratio of the bed lengths of the more selective catalyst layers to the bed lengths of the more active catalyst layers being between 1.4 and 2. The present invention further relates to a process for gas phase oxidation in which a gaseous stream which comprises a hydrocarbon and molecular oxygen is passed through a plurality of catalyst layers, the ratio of the bed lengths of the more selective catalyst layers to the bed lengths of the more active catalyst layers being between 1.4 and 2.Type: ApplicationFiled: May 14, 2007Publication date: June 25, 2009Applicant: BASF SEInventors: Hagen Wilmer, Cornelia Dobner, Frank Rosowski, Sebastian Storck, Jürgen Zühlke
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Publication number: 20080312477Abstract: A process for charging a reactor with a fixed catalyst bed which comprises at least one annular shaped support catalyst body K, in which, before the charging, fragments formed in the preparation of the shaped catalyst bodies K are removed by screening.Type: ApplicationFiled: June 13, 2008Publication date: December 18, 2008Applicant: BASF SEInventors: Andreas Raichle, Holger Borchert, Klaus Joachim Muller-Engel, Hagen Wilmer, Cornelia Dobner, Ulrich Cremer
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Publication number: 20080227992Abstract: Catalysts comprising a catalytically active composition, the catalytically active composition comprising vanadium, phosphorus, iron and oxygen, wherein the catalytically active composition has an iron:vanadium atomic ratio of 0.005 to <0.05, and wherein iron in the catalytically active composition is derived from an iron starting material comprising Fe(III) phosphate; and processes for making such catalysts as well as uses therefor to prepare maleic anhydride are described.Type: ApplicationFiled: July 21, 2006Publication date: September 18, 2008Applicant: BASF AktiengesellschaftInventors: Cornelia Dobner, Mark Duda, Andreas Raichle, Hagen Wilmer, Frank Rosowski, Markus Holzle
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Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof
Patent number: 7169732Abstract: A process for preparing a vanadium, phosphorus, and oxygen catalyst precursor for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon having at least four carbon atoms, which comprises (a) reacting vanadium pentoxide with from 102 to 110% strength phosphoric acid in the presence of a primary or secondary, noncyclic or cyclic, unbranched or branched, saturated alcohol having from 3 to 6 carbon atoms in a temperature range from 80 to 160° C.; (b) isolating the precipitate formed; (c) setting an organic carbon content of ?1.1% by weight in the isolated precipitate by heat treatment in a temperature range from 250 to 350° C., the heat-treated product, following the addition of 3.0% by weight of graphite, giving a powder X-ray diffraction diagram which in the 2? region features a ratio of the height of the peak of any pyrophosphate phase present at 28.5° to the height of the peak due to the graphite at 26.6° of ?0.Type: GrantFiled: March 12, 2003Date of Patent: January 30, 2007Assignee: BASF AktiengesellschaftInventors: Jens Weiguny, Sebastian Storck, Mark Duda, Cornelia Dobner -
Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof
Patent number: 7157403Abstract: A process for preparing a vanadium, phosphorus, and oxygen catalyst precursor for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon having at least four carbon atoms, by reacting vanadium pentoxide (I) in the presence of a primary or secondary, noncyclic or cyclic, unbranched or branched, saturated alcohol having from 3 to 6 carbon atoms (II) with a pentavalent or trivalent phosphorus compound (III) in a temperature range from 80 to 160° C. with stirring and subsequently filtering the resultant suspension, in which (a) the way in which the phosphorus compound (III) and the vanadium pentoxide (I) are combined in the presence of the alcohol (II), (b) the action of a stirring power of from 0.01 to 0.6 W/kg suspension, and/or (c) the filtration at a temperature from 65° C. to 160° C.Type: GrantFiled: March 12, 2003Date of Patent: January 2, 2007Assignee: BASF AktiengesellschaftInventors: Jens Weiguny, Sebastian Storck, Mark Duda, Cornelia Dobner -
Patent number: 7060649Abstract: Disclosed is a method for producing a catalyst containing vanadium, phosphorus, and oxygen, which is used for oxidizing the gas phase of a hydrocarbon having at least four carbon atoms to maleic anhydride. According to the inventive method, a corresponding catalyst precursor which contains vanadium, phosphorus, and oxygen and is provided with particles having an average diameter of at least 2 mm is converted into a catalytically active form by means of calcination, and a flow of the catalyst precursor is transported on a conveyor belt across at least one calcination area over a distance 1n at an essentially steady speed in order to be calcinated. The variation over time of the gas temperature in relation to the set point value amounts to ?5° C.Type: GrantFiled: March 12, 2003Date of Patent: June 13, 2006Assignee: BASF AktiengesellschaftInventors: Jens Weiguny, Sebastian Storck, Mark Duda, Cornelia Dobner, Raimund Felder
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Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof
Publication number: 20050222435Abstract: A process for preparing a vanadium, phosphorus, and oxygen catalyst precursor for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon having at least four carbon atoms, by reacting vanadium pentoxide (I) in the presence of a primary or secondary, noncyclic or cyclic, unbranched or branched, saturated alcohol having from 3 to 6 carbon atoms (II) with a pentavalent or trivalent phosphorus compound (III) in a temperature range from 80 to 160° C. with stirring and subsequently filtering the resultant suspension, in which (a) the way in which the phosphorus compound (III) and the vanadium pentoxide (I) are combined in the presence of the alcohol (II), (b) the action of a stirring power of from 0.01 to 0.6 W/kg suspension, and/or (c) the filtration at a temperature from 65° C. to 160° C.Type: ApplicationFiled: March 12, 2003Publication date: October 6, 2005Applicant: BASF AktiengesellschaftInventors: Jens Weiguny, Sebastian Storck, Mark Duda, Cornelia Dobner -
Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof
Publication number: 20050222436Abstract: A process for preparing a vanadium, phosphorus, and oxygen catalyst precursor for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon having at least four carbon atoms, which comprises (a) reacting vanadium pentoxide with from 102 to 110% strength phosphoric acid in the presence of a primary or secondary, noncyclic or cyclic, unbranched or branched, saturated alcohol having from 3 to 6 carbon atoms in a temperature range from 80 to 160° C.; (b) isolating the precipitate formed; (c) setting an organic carbon content of ?1.1% by weight in the isolated precipitate by heat treatment in a temperature range from 250 to 350° C., the heat-treated product, following the addition of 3.0% by weight of graphite, giving a powder X-ray diffraction diagram which in the 2? region features a ratio of the height of the peak of any pyrophosphate phase present at 28.5° to the height of the peak due to the graphite at 26.6° of ?0.Type: ApplicationFiled: March 12, 2003Publication date: October 6, 2005Applicant: BASF AktiengesellschaftInventors: Jens Weiguny, Sebastian Storck, Mark Duda, Cornelia Dobner -
Publication number: 20050153834Abstract: Disclosed is a method for producing a catalyst containing vanadium, phosphorus, and oxygen, which is used for oxidizing the gas phase of a hydrocarbon having at least four carbon atoms to maleic anhydride. According to the inventive method, a corresponding catalyst precursor which contains vanadium, phosphorus, and oxygen and is provided with particles having an average diameter of at least 2 mm is converted into a catalytically active form by means of calcination, and a flow of the catalyst precursor is transported on a conveyor belt across at least one calcination area over a distance ln at an essentially steady speed in order to be calcinated. The variation over time of the gas temperature in relation to the set point value amounts to ?5 ° C.Type: ApplicationFiled: March 12, 2003Publication date: July 14, 2005Inventors: Jens Weiguny, Sebastian Storck, Mark Duda, Cornelia Dobner, Raimund Felder