Patents by Inventor Gerd Maletz
Gerd Maletz 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: 10150103Abstract: The invention relates to: a catalytic composition that is active in the selective catalytic reduction of nitric oxides, containing an iron-containing MFI-type zeolite and an iron-containing BEA-type zeolite, wherein the weight average particle size d50 of the MFI-type zeolite and the BEA-type zeolite is different; a method for producing an SCR catalyst; and the SCR catalyst produced in this way. The adhesion of the coating is improved in that the weight average particle sizes of the MFI-type and BEA-type zeolites are different.Type: GrantFiled: February 24, 2016Date of Patent: December 11, 2018Assignee: Clariant International Ltd.Inventors: Markus Reichinger, Gerd Maletz, Andreas Bentele, Martin Schneider, Klaus Wanninger, Kristof Eisert
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Publication number: 20180050326Abstract: The invention relates to: a catalytic composition that is active in the selective catalytic reduction of nitric oxides, containing an iron-containing MFI-type zeolite and an iron-containing BEA-type zeolite, wherein the weight average particle size d50 of the MFI-type zeolite and the BEA-type zeolite is different; a method for producing an SCR catalyst; and the SCR catalyst produced in this way. The adhesion of the coating is improved in that the weight average particle sizes of the MFI-type and BEA-type zeolites are different.Type: ApplicationFiled: February 24, 2016Publication date: February 22, 2018Applicant: Clariant International Ltd.Inventors: Markus REICHINGER, Gerd MALETZ, Andreas BENTELE, Martin SCHNEIDER, Klaus WANNINGER, Kristof EISERT
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Publication number: 20170050179Abstract: The present invention relates to a copper-containing KFI-type zeolite, wherein the zeolite contains 1 to 4.5 wt.-% copper. The invention is also directed towards a method for producing the copper-containing zeolite according to the invention as well as towards the use of the zeolite in SCR catalysis. Further subjects of the invention are a washcoat which contains the zeolite according to the invention, an SCR catalyst which contains the zeolite according to the invention as well as an exhaust-gas cleaning system which comprises the SCR catalyst.Type: ApplicationFiled: October 26, 2016Publication date: February 23, 2017Applicant: SUD-CHEMIE IP GMBH & CO. KGInventors: Markus REICHINGER, Gerd MALETZ, Kristof EISERT
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Patent number: 9573097Abstract: The present invention relates to a catalytic composition comprising a noble metal on an acidic tungsten-containing mixed oxide, a method for producing the catalytic composition and the use of the catalytic composition as oxidation catalyst. The invention further relates to a catalyst shaped body, which has the catalytic composition on a support, a washcoat containing the catalytic composition according to the invention and the use of the washcoat to produce a coated catalyst shaped body.Type: GrantFiled: October 28, 2011Date of Patent: February 21, 2017Assignee: CLARIANT PRODUKTE (Deutschland) GmbHInventors: Markus Reichinger, Gerd Maletz, Klaus Wanninger, Andreas Bentele, Martin Schneider
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Patent number: 9539562Abstract: The invention relates to a method for producing a catalytic composition, wherein the catalytic composition has a high activity and selectivity with regard to the oxidation of CO and a reduced activity with regard to the oxidation of NO. The invention also relates to the catalyst produced using the method according to the invention. Finally, the invention is directed towards an exhaust-gas cleaning system which comprises the catalyst according to the invention.Type: GrantFiled: January 27, 2010Date of Patent: January 10, 2017Assignee: CLARIANT PRODUKTE (DEUTSCHLAND) GMBHInventors: Andreas Bentele, Klaus Wanninger, Gerd Maletz, Martin Schneider
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Patent number: 8859454Abstract: The invention relates to a method for producing a catalyst, wherein the catalyst has a high activity and selectivity with regard to the oxidation of CO and NO. The invention also relates to the catalyst produced using the method according to the invention, the use of the catalyst as oxidation catalyst as well as a catalyst component which contains the catalyst according to the invention. Finally, the invention is directed towards an exhaust-gas cleaning system which comprises the catalyst component containing the catalyst according to the invention.Type: GrantFiled: January 27, 2010Date of Patent: October 14, 2014Assignee: Clariant Produkte (Deutschland) GmbHInventors: Andreas Bentele, Klaus Wanninger, Gerd Maletz, Martin Schneider
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Publication number: 20130343975Abstract: The present invention relates to a catalytic composition comprising a noble metal on an acidic tungsten-containing mixed oxide, a method for producing the catalytic composition and the use of the catalytic composition as oxidation catalyst. The invention further relates to a catalyst shaped body, which has the catalytic composition on a support, a washcoat containing the catalytic composition according to the invention and the use of the washcoat to produce a coated catalyst shaped body.Type: ApplicationFiled: October 28, 2011Publication date: December 26, 2013Applicant: Clariant Produkte(Deutschland) GmbHInventors: Markus Reichinger, Gerd Maletz, Klaus Wanninger, Andreas Bentele, Martin Schneider
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Patent number: 8420035Abstract: The invention relates to a coating composition for diesel oxidation catalysts or a combination of diesel oxidation catalysts and diesel particle filters, said coating composition comprising a combination of a noble metal on a metal oxide, with the exception of cerium oxide, and a zeolite doped with iron. The invention also relates to a catalyst provided with the coating according to the invention, and to a method for treating the exhaust gas of diesel internal combustion engines.Type: GrantFiled: November 27, 2008Date of Patent: April 16, 2013Assignee: Sued-Chemie IP GmbH & Co. KGInventors: Gerd Maletz, Volker Kurth, Andreas Bentele, Klaus Wanninger, Arno Tissler
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Publication number: 20130089494Abstract: The present invention relates to a copper-containing KFI-type zeolite, wherein the zeolite contains 1 to 4.5 wt.-% copper. The invention is also directed towards a method for producing the copper-containing zeolite according to the invention as well as towards the use of the zeolite in SCR catalysis. Further subjects of the invention are a washcoat which contains the zeolite according to the invention, an SCR catalyst which contains the zeolite according to the invention as well as an exhaust-gas cleaning system which comprises the SCR catalyst.Type: ApplicationFiled: February 10, 2011Publication date: April 11, 2013Applicant: SUD-CHEMIE IP GMBH & CO. KGInventors: Markus Reichinger, Gerd Maletz, Kristof Eisert
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Publication number: 20120020843Abstract: The invention relates to a method for producing a catalytic composition, wherein the catalytic composition has a high activity and selectivity with regard to the oxidation of CO and a reduced activity with regard to the oxidation of NO. The invention also relates to the catalyst produced using the method according to the invention. Finally, the invention is directed towards an exhaust-gas cleaning system which comprises the catalyst according to the invention.Type: ApplicationFiled: January 27, 2010Publication date: January 26, 2012Applicant: Sud-Chemie AGInventors: Andreas Bentele, Klaus Wanninger, Gerd Maletz, Martin Schneider
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Publication number: 20110311422Abstract: The invention relates to a method for producing a catalyst, wherein the catalyst has a high activity and selectivity with regard to the oxidation of CO and NO. The invention also relates to the catalyst produced using the method according to the invention, the use of the catalyst as oxidation catalyst as well as a catalyst component which contains the catalyst according to the invention. Finally, the invention is directed towards an exhaust-gas cleaning system which comprises the catalyst component containing the catalyst according to the invention.Type: ApplicationFiled: January 27, 2010Publication date: December 22, 2011Applicant: SUED-CHEMIE AGInventors: Andreas Bentele, Klaus Wanninger, Gerd Maletz, Martin Schneider
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Publication number: 20110044871Abstract: The invention relates to a coating composition for diesel oxidation catalysts or a combination of diesel oxidation catalysts and diesel particle filters, said coating composition comprising a combination of a noble metal on a metal oxide, with the exception of cerium oxide, and a zeolite doped with iron. The invention also relates to a catalyst provided with the coating according to the invention, and to a method for treating the exhaust gas of diesel internal combustion engines.Type: ApplicationFiled: November 27, 2008Publication date: February 24, 2011Applicant: SUD-CHEMIE AGInventors: Gerd Maletz, Volker Kurth, Andreas Bentele, Klaus Wanninger, Arno Tissler
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Patent number: 5403962Abstract: The invention describes a chromium-free catalyst for hydrogenation of organic compounds, especially organic compounds containing the carbonyl function, such as aldehydes, ketones, or carboxylic acids or their esters, to the corresponding alcohols wherein the catalysts is characterized by the following features:its oxide form corresponds to the compositionCu.sub.a Al.sub.b Zr.sub.c Mn.sub.d O.sub.xwherein the following relations apply:for the first embodiment:a>O; b>O; c.gtoreq.O; d>O; a>b/2; b>a/4; a>c; a>d;and for the second embodiment:a>O; b=a/40 to a/4; c.gtoreq.O; d>O; a>c; a=0.5 d to 0.95 dand x is the number of oxygen ions needed per formula unit for electrical neutrality.Type: GrantFiled: May 31, 1994Date of Patent: April 4, 1995Assignee: Sud-Chemie AGInventors: Michael Schneider, Karl Kochloefl, Gerd Maletz
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Patent number: 5387408Abstract: A catalyst for the conversion of carbon monoxide which before reductive activation, has the chemical composition which corresponds to the formulaCu.sub.0.04-6 AlMg.sub.0.1-10.sup.O.sub.X,wherein x denotes the number of oxygen atoms required to maintain electroneutrality per formula unit; and wherein the intensity ratio between the x-ray diffraction lines of the spinels CuAl.sub.2 O.sub.4 and MgAl.sub.2 O.sub.4 at d=0.244 nm and copper oxide at d=0.232 nm, determined as the ratio of reflex heights is about 0.05 to 0.5.Type: GrantFiled: December 17, 1992Date of Patent: February 7, 1995Assignee: Sud-Chemie A.G.Inventors: Michael Schneider, Karl Kochloefl, Gerd Maletz
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Patent number: 5217937Abstract: An SiO.sub.2 -containing copper oxide-chromium oxide catalyst is obtained through heat treatment of copper oxide and chromium oxide, or of a precursor compound convertible into copper oxide or chromium oxide in the presence of an SiO.sub.2 component; it is characterized by the fact that, after the heat treatment,(a) the intensity ratio between the X-ray diffraction lines (XRD reflexes) of the copper oxide with d=0.232 nm and of the CuCr.sub.2 O.sub.4 spinel with d=0.240 nm formed through heat treatment, determined as the ratio of the reflex amplitudes, is 0.7 to 4.0:1, and(b) the copper mass, which is dissolved by stirring 10 g of the catalyst in 100 ml of 10 weight percent acetic acid at 20.degree. C. for 2 minutes, amounts to a maximum of 200 mg.Type: GrantFiled: November 21, 1991Date of Patent: June 8, 1993Assignee: Sud-Chemie AktiengesellschaftInventors: Michael Schneider, Gerd Maletz, Karl Kochloefl
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Patent number: 5206203Abstract: Acid-resistant copper oxide-chromium oxide catalysts for hydrogenation of fatty acids or fatty acid mixtures and/or the esters thereof are obtained through heat treatment of copper oxide and chromium oxide or of precursor compounds that are convertible into copper oxide or chromium oxide and which contain aluminum zirconium, cerium and/or lanthanum oxide as an additional metal component. The acid resistance is defined by the fact that the amount of copper which is dissolved by stirring 10 g of the catalyst for 2 minutes in 100 ml of 10 weight percent acetic acid at 20.degree. C., is a maximum of 200 mg.Type: GrantFiled: November 21, 1991Date of Patent: April 27, 1993Assignee: Sud-Chemie AktiengesellschaftInventors: Michael Schneider, Gerd Maletz, Karl Kochloefl
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Patent number: 4906602Abstract: A catalyst for the selective hydrogenation of polyunsaturated hydrocarbons which contain entirely or predominantly more than five carbon atoms, containing palladium with a promotor on a metal oxide support. The promotor is a metal from the subgroup IB of the periodic system (preferably silver) and the metal oxide support (TiO.sub.2 optionally mixed with CeO.sub.2 and/or ZrO.sub.2) is macroporous, the pore volume being about 0.2 to 0.4, preferably about 0.25 to 0.30 ml per g of carrier and the proportion of the macropores having a diameter of more than 14 nm being at least 65%.Type: GrantFiled: October 24, 1988Date of Patent: March 6, 1990Assignee: Sud-Chemie AktiengesellschaftInventors: Michael Schneider, Karl Kochloefl, Jurgen Ladebeck, Gerd Maletz
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Patent number: 4792439Abstract: A process for decreasing the content of nitrogen oxides in flue gases. The process comprising contacting the flue gases with a catalyst. The catalyst contains at least one of the metals titanium, zirconium, vanadium, tungsten, molybdenum, or cerium in the form of one or more of their oxides combined with a silicate with a layer structure (layer silicate) comprising acid-activated kaolin. The crystalline layer structure of the acid-activated kaolin is essentially retained, while being not yet X-ray amorphous. The acid activation increases the BET surface area at least 15% and preferably at least 50% in terms of the BET surface area of the kaolin before acid activation. The atomic ratio of the silicon in the acid-activated kaolin to the metal in the oxide is from 0.2 and 50 and preferably from 0.4 to 25.Type: GrantFiled: May 7, 1987Date of Patent: December 20, 1988Assignee: Sud-Chemie AktiengesellschaftInventors: Michael Schneider, Hans J. Wernicke, Karl Kochloefl, Gerd Maletz
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Patent number: 4774213Abstract: A ferruginous catalyst for decreasing the content of nitrogen oxide in flue gases. The catalyst comprising an active constituent in the form of a combination of a compound of iron and of an acid aluminosilicate that has a layered structure.Type: GrantFiled: December 11, 1986Date of Patent: September 27, 1988Assignee: Sud-Chemie AktiengesellschaftInventors: Michael Schneider, Karl Kochloefl, Gerd Maletz, Hans J. Wernicke
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Patent number: 4734391Abstract: A catalyst for decreasing the content of nitrogen oxides in flue gases. The catalyst contains at least one of the metals titanium, zirconium, vanadium, tungsten, molybdenum, or cerium in the form of one or more of their oxides combined with a silicate with a three-layer structure (three-layer silicate) selected from the group consisting of illite and mica. The atomic ratio of the silicon in the three-layer silicate to the metal in the oxide is from 0.2 and 50 and preferably from 0.4 to 25.Type: GrantFiled: August 11, 1986Date of Patent: March 29, 1988Assignee: Sud-Chemie AktiengesellschaftInventors: Michael Schneider, Hans J. Wernicke, Karl Kochloefl, Gerd Maletz