Patents by Inventor Klaus Harth
Klaus Harth 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: 8071389Abstract: The invention relates to a method of controlling a hydrogenation of a starting material in a hydrogenation reactor, in which the amount of hydrogen reacted in the hydrogenation is firstly determined, the ratio of the amount of hydrogen reacted to the amount of starting material fed in is then derived, this ratio is compared with a prescribed value and, finally, at least one process parameter is altered if the ratio of the amount of hydrogen reacted to the amount of starting material fed in deviates by a prescribed amount from the prescribed value.Type: GrantFiled: January 30, 2006Date of Patent: December 6, 2011Assignee: BASF AktiengesellschaftInventors: Alexander Weck, Markus Rösch, Gunther Windecker, Gunnar Heydrich, Rolf Pinkos, Olga Schubert, Klaus Harth
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Patent number: 7910766Abstract: A process for preparing at least one partial oxidation and/or ammoxidation product of a hydrocarbon by partially dehydrogenating at least one saturated hydrocarbon H under heterogeneous catalysis and using the resulting product gas mixture A, which comprises the partially dehydrogenated hydrocarbon H, as such or in modified form for heterogeneously catalyzed partial oxidation and/or ammoxidation of the partially dehydrogenated hydrocarbon present in the product gas mixture A, said process including at least one mechanical separating operation inserted between the product gas mixture A and the heterogeneously catalyzed partial oxidation and/or ammoxidation.Type: GrantFiled: March 31, 2004Date of Patent: March 22, 2011Assignee: BASF AktiengesellschaftInventors: Goetz-Peter Schindler, Otto Machhammer, Klaus Joachim Mueller-Engel, Claus Hechler, Jochen Petzoldt, Christoph Adami, Klaus Harth
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Patent number: 7850842Abstract: The invention relates to a process for preparing a catalyst support, in which zirconium dioxide powder is mixed with a binder, if desired a pore former, if desired an acid, water and, if desired, further additives to give a kneadable composition and the composition is homogenized, shaped to produce shaped bodies, dried and calcined, wherein the binder is a monomeric, oligomeric or polymeric organosilicon compound. Suitable binders are monomeric, oligomeric or polymeric silanes, alkoxysilanes, aryloxysilanes, acryloxysilanes, oximinosilanes, halosilanes, aminoxysilanes, aminosilanes, amidosilanes, silazanes or silicones. The invention also provides the catalyst support which has been prepared in this way, a catalyst comprising the support and its use as dehydrogenation catalyst.Type: GrantFiled: May 2, 2003Date of Patent: December 14, 2010Assignee: BASF AktiengesellschaftInventors: Otto Hofstadt, Michael Hesse, Götz-Peter Schindler, Klaus Harth, Falk Simon
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Patent number: 7736598Abstract: The invention relates to a reactor and a process for preparing chlorine from hydrogen chloride by gas-phase oxidation by means of oxygen in the presence of a heterogeneous catalyst in a fluidized bed, with gas-permeable plates being located in the fluidized bed. The gas-permeable plates are connected in a thermally conductive manner to a heat exchanger located in the fluidized bed.Type: GrantFiled: February 8, 2005Date of Patent: June 15, 2010Assignee: BASF AktiengesellschaftInventors: Lothar Seidemann, Olga Schubert, Martin Sesing, Eckhard Stroefer, Martin Fiene, Christian Walsdorff, Klaus Harth
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Patent number: 7700803Abstract: Catalysts for preparing carboxylic acid salts from alcohols which a) consist of copper or b) comprise from 99.9 to 10% by weight of copper and from 0.01 to 90% by weight of iron and from 0 to 50% by weight of one or more other metals, and may optionally be doped, the hydroxides being obtained by precipitation of copper salt solutions or by coprecipitation of copper and iron salt solutions optionally containing salts of other metals using a base, and being reduced by hydrogen.Type: GrantFiled: December 6, 2002Date of Patent: April 20, 2010Assignee: BASF AktiengesellschaftInventors: Helge Wessel, Verena Seitz, Klaus Harth, Volker Bomm, Nicola Christiane Aust
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Publication number: 20090171117Abstract: A catalyst suitable for the gas-phase oxidation of organic compounds to ?,?-unsaturated aldehydes and/or carboxylic acids and having an active phase comprising a multimetal oxide material is prepared by a process in which a particulate catalyst precursor which contains oxides and/or compounds of the elements other than oxygen which constitute the multimetal oxide material, which compounds can be converted into oxides, is prepared and said catalyst precursor is converted by calcination into a catalytically active form, wherein a stream of the particulate catalyst precursor is passed at substantially constant speed through at least one calcination zone at constant temperature for calcination.Type: ApplicationFiled: March 2, 2009Publication date: July 2, 2009Applicant: BASF AktiengesellschaftInventors: Heiko Arnold, Signe Unverricht, Raimund Felder, Klaus Harth, Klaus Joachim Muller-Engel
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Patent number: 7468463Abstract: The present invention relates to a process for preparing optically active aldehydes or ketones which have from 3 to 25 carbon atoms and at least one racemizable stereocenter by catalytic dehydrogenation of the corresponding optically active primary or secondary alcohols in the gas phase in the presence of a catalyst.Type: GrantFiled: March 4, 2005Date of Patent: December 23, 2008Assignee: BASF AGInventors: Thorsten Johann, Oliver Löber, Eike Johannes Bergner, Klaus Ebel, Klaus Harth, Christian Walsdorff
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Publication number: 20080166816Abstract: The invention relates to a method of controlling a hydrogenation of a starting material in a hydrogenation reactor, in which the amount of hydrogen reacted in the hydrogenation is firstly determined, the ratio of the amount of hydrogen reacted to the amount of starting material fed in is then derived, this ratio is compared with a prescribed value and, finally, at least one process parameter is altered if the ratio of the amount of hydrogen reacted to the amount of starting material fed in deviates by a prescribed amount from the prescribed value.Type: ApplicationFiled: January 30, 2006Publication date: July 10, 2008Applicant: BASF AktiengesellschaftInventors: Alexander Weck, Markus Rosch, Gunther Windecker, Gunnar Heydrich, Rolf Pinkos, Olga Schubert, Klaus Harth
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Patent number: 7387983Abstract: A methanol reforming catalyst containing passivated copper and zinc oxide and/or alumina can be prepared by (1) precipitating or spray-drying a mixture of catalyst precursor components dissolved or suspended in a diluent in order to form a solid catalyst precursor in the form of powder or granules, (2) calcining and reducing the solid catalyst precursor obtained in stage (1), (3) passivating the reduced catalyst precursor obtained in stage (2) and (4) shaping the passivated catalyst precursor obtained in stage (3) to form the catalyst. A reduction in the volume shrinkage and an increase in the mechanical hardness during operation of the methanol reforming catalyst are achieved by the preparation process.Type: GrantFiled: July 5, 2005Date of Patent: June 17, 2008Assignees: BASF Aktiengesellschaft, Nucellsys GmbHInventors: Markus Hölzle, Michael Jolyon Sprague, Klaus Harth, Martin Schüssler, Martin Karl, Stefan Boneberg
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Publication number: 20080008877Abstract: Novel catalyst beds comprising a physical mixture of catalytically active and catalytically inactive shaped bodies, in which the catalytically inactive shaped bodies have rounded edges on the external rubbing surfaces.Type: ApplicationFiled: October 8, 2004Publication date: January 10, 2008Applicant: BASF AktiengesellschaftInventors: Klaus Harth, Thorsten Johann, Christian Walsdorff, Otto Hofstadt, Michael Baier, Wolfgang Jürgen Pöpel, Karin Pöpel
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Patent number: 7291761Abstract: A process for the continuous heterogeneously catalyzed partial dehydrogenation of a hydrocarbon in the gas phase and in the presence of molecular oxygen, in which part of the product gas is recirculated to the reaction zone, and a reactor for carrying out such a process.Type: GrantFiled: March 4, 2003Date of Patent: November 6, 2007Assignee: BASF AktiengesellschaftInventors: Otto Machhammer, Goetz-Peter Schindler, Klaus Harth, Peter Zehner
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Patent number: 7285685Abstract: Process for preparing alpha, beta-unsaturated acyclic or cyclic carbonyl compounds by dehydrogenation of the corresponding saturated carbonyl compounds in the gas phase over a heterogeneous dehydrogenation catalyst comprising platinum and/or palladium and tin on an oxidic support.Type: GrantFiled: July 22, 2004Date of Patent: October 23, 2007Assignee: BASF AktiengesellschaftInventors: Christian Walsdorff, Beatrice Rössler, Götz-Peter Schindler, Joaquim H. Teles, Klaus Harth
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Publication number: 20070191644Abstract: The present invention relates to a process for preparing optically active aldehydes or ketones which have from 3 to 25 carbon atoms and at least one racemizable stereocenter by catalytic dehydrogenation of the corresponding optically active primary or secondary alcohols in the gas phase in the presence of a catalyst.Type: ApplicationFiled: March 4, 2005Publication date: August 16, 2007Inventors: Thorsten Johann, Oliver Lober, Eike Bergner, Klaus Ebel, Klaus Harth, Christian Walsdorff
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Publication number: 20070183963Abstract: The invention relates to a reactor and a process for preparing chlorine from hydrogen chloride by gas-phase oxidation by means of oxygen in the presence of a heterogeneous catalyst in a fluidized bed, with gas-permeable plates being located in the fluidized bed. The gas-permeable plates are connected in a thermally conductive manner to a heat exchanger located in the fluidized bed.Type: ApplicationFiled: February 8, 2005Publication date: August 9, 2007Applicant: BASF AKTIENGESELLSCHAFTInventors: Lothar Seidemann, Olga Schubert, Martin Sesing, Eckhard Stroefer, Martin Fiene, Christian Walsdorff, Klaus Harth
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Patent number: 7253280Abstract: The present invention relates to a process for the catalytic preparation of melamine by decomposition of urea over particular solid catalysts using a main reactor and an after-reactor. A catalyst having a low Lewis acidity is used in the main reactor and a catalyst having an equal or preferably higher Lewis acidity is used in the after-reactor.Type: GrantFiled: January 16, 2004Date of Patent: August 7, 2007Assignee: BASF AktiengesellschaftInventors: Christian Kuhrs, Eckehard Danz, Wolfgang Steiner, Ralf-Thomas Rahn, Thomas Grassler, Reiner Geier, Klaus Harth, Markus Hölzle
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Patent number: 7193121Abstract: The invention relates to a process for preparing 4-vinylcyclohexene, which comprises the steps (A) providing an n-butane-containing feed gas stream, (B) feeding the n-butane-containing feed gas stream into at least one dehydrogenation zone and dehydrogenating n-butane to butadiene to give a product stream comprising butadiene, n-butane, possibly 1-butene and 2-butene and possibly water vapor and other secondary constituents, (C) feeding the product stream from dehydrogenation, if appropriate after separating off water vapor and secondary constituents, into a dimerization zone and catalytically dimerizing butadiene to give a product stream comprising 4-vinylcyclohexene, n-butane and possibly 1-butene, 2-butene and unreacted butadiene, and (D) separating off 4-vinylcyclohexene from the product stream from the dimerization and recirculating n-butane and possibly 1-butene, 2-butene and unreacted butadiene to the dehydrogenation zone.Type: GrantFiled: February 17, 2003Date of Patent: March 20, 2007Assignee: Basf AktiengesellschaftInventors: Christian Walsdorff, Götz-Peter Schindler, Klaus Harth, Hartmut Hibst
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Patent number: 7186395Abstract: Iron oxides are upgraded by calcining at from 700 to 1200° C.Type: GrantFiled: April 3, 2002Date of Patent: March 6, 2007Assignee: BASF AktiengesellschaftInventors: Christian Walsdorff, Michael Bajer, Reinhard Körner, Klaus Harth, Gerald Vorberg, Wilhelm Ruppel
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Publication number: 20070032681Abstract: Process for preparing alpha, beta-unsaturated acyclic or cyclic carbonyl compounds by dehydrogenation of the corresponding saturated carbonyl compounds in the gas phase over a heterogeneous dehydrogenation catalyst comprising platinum and/or palladium and tin on an oxidic support.Type: ApplicationFiled: July 22, 2004Publication date: February 8, 2007Applicant: BASF AktiengesellschaftInventors: Christian Walsdorff, Beatrice Robler, Gotz-Peter Schindler, Joaquim Teles, Klaus Harth
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Patent number: 7173143Abstract: The present invention relates to an integrated process for the synthesis of propylene oxide, which comprises at least the following steps: (i) dehydrogenation of propane to give a substream T(0) comprising at least propane, propene and hydrogen; (ii) fractionation of the substream T(0) to give at least one gaseous hydrogen-rich substream T(2) and a substream T(1) comprising at least propene and propane; (iii) synthesis of hydrogen peroxide using the substream T(2), giving a substream T (4) which is rich in hydrogen peroxide and a gaseous substream T(6); (iv) fractionation of the substream T(1) to give at least one propane-rich substream T(5) and at least one propene-rich substream T(3); (v) reaction of the at least one substream T(3) with substream T(4) to give propylene oxide.Type: GrantFiled: August 29, 2003Date of Patent: February 6, 2007Assignee: BASF AktiengesellschaftInventors: Michael Bender, Peter Zehner, Otto Machhammer, Ulrich Mueller, Klaus Harth, Goetz-Peter Schindler, Henrik Junicke
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Publication number: 20060263290Abstract: The invention relates to a process for preparing chlorine by catalytic gas-phase oxidation of hydrogen chloride, which comprises the steps: a) providing a feed gas stream I comprising hydrogen chloride and a feed gas stream II comprising oxygen; b) in a first oxidation stage, feeding the feed gas stream I, the feed gas stream II, if desired a recycle stream la comprising hydrogen chloride and if desired an oxygen-containing recycle stream IIa into a first oxidation zone and bringing them into contact with a first oxidation catalyst so that a first partial amount of the hydrogen chloride is oxidized to chlorine and a gas stream III comprising chlorine, unreacted oxygen, unreacted hydrogen chloride and water vapor is obtained; c) in a second oxidation stage, feeding the gas stream III into a second oxidation zone and bringing it into contact with at least one further oxidation catalyst so that a second partial amount of the hydrogen chloride is oxidized to chlorine and a product gas stream IV comprising chlorinType: ApplicationFiled: August 6, 2004Publication date: November 23, 2006Applicant: BASF AktiengesellschaftInventors: Christian Walsdorff, Martin Fiene, Martin Sesing, Olga Metelkina, Lothar Seidemann, Eckhard Stroefer, Klaus Harth