Patents by Inventor Knut Wassermann
Knut Wassermann 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).
-
Publication number: 20130336864Abstract: Provided are composites of mixed metal oxides comprising: a ceria-zirconia-alumina composite, wherein the alumina is present in an amount in the range of 1 to less than 30% by weight of the composite and the mixed metal oxide composite has a ceria reducibility of at least 50% after 12 hours of hydrothermal aging at 1050° C. In preparation thereof, a ceria-zirconia solid solution can optionally further comprise at least one rare earth oxide other than ceria and the alumina may be formed by using a colloidal alumina precursor. Methods of making and using these composites are also provided.Type: ApplicationFiled: June 13, 2013Publication date: December 19, 2013Applicant: BASF CorporationInventors: Xiaolai Zheng, Xiaoming Wang, Knut Wassermann
-
Publication number: 20120180464Abstract: Provided are exhaust systems and components suitable for use in conjunction with gasoline engines to treat gaseous emissions such as hydrocarbons, nitrogen oxides, and carbon monoxides. Layered three-way conversion (TWC) catalysts comprise an outer layer whose rhodium is supported by an oxygen storage component, such as a ceria-zirconia composite, and the outer layer is substantially free from alumina as a support. The rhodium-containing layer can be free of all other precious metals, such as platinum and palladium. A lower palladium layer is provided where the palladium is supported by a refractory metal oxide. The lower palladium layer can be free of rhodium and platinum and can contain an oxygen storage component that is the same or different from that in the rhodium-containing layer. Methods of making and using these catalysts are also provided.Type: ApplicationFiled: January 13, 2012Publication date: July 19, 2012Applicant: BASF CorporationInventors: Junmei Wei, Attilio Siani, Mirko Arnold, Stefan Kotrel, Stephan Siemund, Knut Wassermann
-
Publication number: 20120165185Abstract: Provided herein is a barium sulfate-containing catalyst carrier. The catalyst carrier is useful for supporting an exhaust gas purification catalyst, such as a three way conversion catalyst. In an embodiment, the carrier comprises BaSO4/thermally stable alumina. Further provided is a process for preparing the catalyst carrier, with or without precious metals, comprising treating a barium oxide/alumina or barium carbonate/alumina with a stoichiometric amount of sulfuric acid (H2SO4), thus forming BaSO4/alumina in situ in good yield and at low cost.Type: ApplicationFiled: December 27, 2010Publication date: June 28, 2012Applicant: BASF CorporationInventors: Gary A. Gramiccioni, Kenneth R. Brown, Michel Deeba, Stefan Kotrel, Knut Wassermann
-
Publication number: 20120125015Abstract: In a thermoelectric module consisting of p- and n-conducting thermoelectric material pieces which are alternately connected to one another via electrically conductive contacts, the thermoelectric module (19) is thermally conductively connected to a micro heat exchanger (13) which comprises a plurality of continuous channels having a diameter of at most 1 mm, through which a fluid heat exchanger medium can flow.Type: ApplicationFiled: October 3, 2011Publication date: May 24, 2012Applicant: BASF SEInventors: Peter RENZE, Jürgen MOORS, Georg DEGEN, Knut WASSERMANN
-
Patent number: 8173087Abstract: Provided are exhaust systems and components suitable for use in conjunction with gasoline direct injection (GDI) engines to capture particulates in addition to reducing gaseous emission such as hydrocarbons, nitrogen oxides, and carbon monoxides. Exhaust treatment systems comprising a three-way conversion (TWC) catalyst located on a particulate trap are provided. An exemplary particulate trap is a soot filter. Additional treatment components can be added downstream of the particulate trap, including NOx traps and SCR catalysts. The TWC catalyst can be coated on both the inlet side and the outlet side of the particulate trap. Alternatively, an oxidation catalyst can be deposited on a particulate trap. Methods of making and using the same are also provided.Type: GrantFiled: February 4, 2009Date of Patent: May 8, 2012Assignee: BASF CorporationInventors: Junmei Wei, Knut Wassermann, Yeujin Li
-
Publication number: 20110252773Abstract: Provided are exhaust systems and components suitable for use in conjunction with gasoline engines to capture particulates in addition to reducing gaseous emission such as hydrocarbons, nitrogen oxides, and carbon monoxides. Exhaust treatment systems comprising a three-way conversion (TWC) catalyst located on a particulate filters are provided. Coated particle filters having washcoat loadings in the range of 1 to 4 g/ft3 result in minimal impact on back pressure while simultaneously providing TWC catalytic activity and particle trapping functionality to meet increasingly stringent regulations such as Euro 6. Sufficient to high levels of oxygen storage components (OSC) are also delivered on and/or within the filter. The filters can have a coated porosity that is substantially the same as its uncoated porosity. The TWC catalytic material can comprise a particle size distribution such that a first set of particles has a first d90 particle size of 7.Type: ApplicationFiled: April 15, 2011Publication date: October 20, 2011Applicant: BASF CorporationInventors: Mirko Arnold, Stephan Siemund, Attilio Siani, Knut Wassermann
-
Patent number: 8038951Abstract: Provided are catalyst composites comprising: a catalytic material on a carrier, the catalytic material comprising a precious metal selected from a palladium component and an oxygen storage component, the oxygen storage component being present in an amount of at least 10% by weight, wherein substantially all of the oxygen storage component is in intimate contact with the palladium component and the catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. A catalyst composite comprising: a catalytic material on a carrier, the catalytic material comprising a palladium component and a ceria-zirconia composite support, the ceria being present in an amount in the range of 10 to 70% by weight, wherein substantially all of the ceria is in intimate contact with at least a portion of the palladium component. Methods of making and using these catalysts along with systems containing these catalysts are also provided.Type: GrantFiled: January 15, 2008Date of Patent: October 18, 2011Assignee: BASF CorporationInventors: Knut Wassermann, Stephen Siemund, Michel Deeba, Harold Rabinowitz
-
Patent number: 7922988Abstract: A layered three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Engine exhaust treatment system and methods of using the same are also provided. The catalytic material can be provided in layers such that a larger amount of oxygen storage component is provided in a downstream zone as compared to an upstream zone. For example, the upstream zone can be configured to have one, two, or three layers, and the downstream zone can be independently configured to have one, two, or three layers. In one or more embodiments, the catalyst supported on a carrier has three layers, where at least two of the layers are zoned to have an oxygen storage component being present in an upstream zone in an amount that is less than the oxygen storage component present in the downstream zone.Type: GrantFiled: October 30, 2009Date of Patent: April 12, 2011Inventors: Michel Deeba, Stephan Siemund, Xinyi Wei, Stefan Kotrel, Knut Wassermann, Glenn Svoboda, Harold Rabinowitz
-
Patent number: 7879755Abstract: Provided are catalyst composites comprising: a catalytic material on a carrier, the catalytic material comprising a precious metal selected from a palladium component and an oxygen storage component, the oxygen storage component being present in an amount of at least 10% by weight, wherein substantially all of the oxygen storage component is in intimate contact with the palladium component and the catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. A catalyst composite comprising: a catalytic material on a carrier, the catalytic material comprising a palladium component and a ceria-zirconia composite support, the ceria being present in an amount in the range of 10 to 70% by weight, wherein substantially all of the ceria is in intimate contact with at least a portion of the palladium component. Methods of making and using these catalysts are also provided.Type: GrantFiled: August 9, 2007Date of Patent: February 1, 2011Assignee: BASF CorporationInventors: Knut Wassermann, Stephan Siemund, Michel Deeba, Harold Rabinowitz
-
Patent number: 7754171Abstract: A multilayered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Provided is a catalytic material of at least four layers in conjunction with a carrier, where each of the layers includes a support, at least three layers comprise a precious metal component, and at least one layer comprises an oxygen storage component (OSC). The catalytic material can further comprise a fifth layer, where at least four layers comprise a precious metal component, at least one layer comprises an oxygen storage component, and at least one layer is substantially free of an oxygen storage component.Type: GrantFiled: January 9, 2008Date of Patent: July 13, 2010Assignee: BASF CorporationInventors: Shau-Lin F. Chen, Knut Wassermann, Stephan Siemund, Tian Luo, Torsten Neubauer, Jin Sakakibara, Harold Rabinowitz
-
Patent number: 7749472Abstract: The present invention provides for novel poisoning-resistant catalysts used for automobile exhaust gas treatment systems. To alleviate the detrimental affects of engine oil and/or fuel additive poisoning the present invention provides for an overcoat layer comprising a porous refractory oxide and one or more base metal oxides, which is coated over one or more precious metal containing washcoat layers. The overcoat of the present invention prevents phosphorous as well as other poisoning deposits, from fouling and/or negatively interacting with the underlying precious metal containing washcoats. In an alternative embodiment, the present invention provides for the coating of the upstream end of a catalytic member by the overcoat layer, thereby creating an upstream poison capture zone.Type: GrantFiled: August 14, 2006Date of Patent: July 6, 2010Assignee: BASF CorporationInventors: Shau-Lin Franklin Chen, Knut Wassermann, Jin Sakakibara
-
Publication number: 20100104491Abstract: A layered three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Engine exhaust treatment system and methods of using the same are also provided. The catalytic material can be provided in layers such that a larger amount of oxygen storage component is provided in a downstream zone as compared to an upstream zone. For example, the upstream zone can be configured to have one, two, or three layers, and the downstream zone can be independently configured to have one, two, or three layers. In one or more embodiments, the catalyst supported on a carrier has three layers, where at least two of the layers are zoned to have an oxygen storage component being present in an upstream zone in an amount that is less than the oxygen storage component present in the downstream zone.Type: ApplicationFiled: October 30, 2009Publication date: April 29, 2010Applicant: BASF Catalysts LLCInventors: Michel Deeba, Stephan Siemund, Xinyi Wei, Stefan Kotrel, Knut Wassermann, Glenn Svoboda, Harold Rabinowitz
-
Patent number: 7622096Abstract: A layered three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Engine exhaust treatment system and methods of using the same are also provided. In one or more embodiments, the catalyst supported on a carrier has three layers, where at least two of the layers are zoned to have an oxygen storage component being present in an upstream zone in an amount that is less than the oxygen storage component present in the downstream zone.Type: GrantFiled: August 9, 2007Date of Patent: November 24, 2009Assignee: BASF Catalysts LLCInventors: Michel Deeba, Knut Wassermann, Glenn Svoboda, Harold Rabinowitz, Stephan Slemund, Xinyi Wei
-
Publication number: 20090193796Abstract: Provided are exhaust systems and components suitable for use in conjunction with gasoline direct injection (GDI) engines to capture particulates in addition to reducing gaseous emission such as hydrocarbons, nitrogen oxides, and carbon monoxides. Exhaust treatment systems comprising a three-way conversion (TWC) catalyst located on a particulate trap are provided. An exemplary particulate trap is a soot filter. Additional treatment components can be added downstream of the particulate trap, including NOx traps and SCR catalysts. The TWC catalyst can be coated on both the inlet side and the outlet side of the particulate trap. Alternatively, an oxidation catalyst can be deposited on a particulate trap. Methods of making and using the same are also provided.Type: ApplicationFiled: February 4, 2009Publication date: August 6, 2009Applicant: BASF Catalysts LLCInventors: Junmei Wei, Knut Wassermann, Yeujin Li
-
Publication number: 20090041645Abstract: Provided are catalyst composites comprising: a catalytic material on a carrier, the catalytic material comprising a precious metal selected from a palladium component and an oxygen storage component, the oxygen storage component being present in an amount of at least 10% by weight, wherein substantially all of the oxygen storage component is in intimate contact with the palladium component and the catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. A catalyst composite comprising: a catalytic material on a carrier, the catalytic material comprising a palladium component and a ceria-zirconia composite support, the ceria being present in an amount in the range of 10 to 70% by weight, wherein substantially all of the ceria is in intimate contact with at least a portion of the palladium component. Methods of making and using these catalysts along with systems containing these catalysts are also provided.Type: ApplicationFiled: January 15, 2008Publication date: February 12, 2009Inventors: Knut Wassermann, Stephan Siemund, Michel Deeba, Harold Rabinowitz
-
Publication number: 20090041644Abstract: Provided are catalyst composites comprising: a catalytic material on a carrier, the catalytic material comprising a precious metal selected from a palladium component and an oxygen storage component, the oxygen storage component being present in an amount of at least 10% by weight, wherein substantially all of the oxygen storage component is in intimate contact with the palladium component and the catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. A catalyst composite comprising: a catalytic material on a carrier, the catalytic material comprising a palladium component and a ceria-zirconia composite support, the ceria being present in an amount in the range of 10 to 70% by weight, wherein substantially all of the ceria is in intimate contact with at least a portion of the palladium component. Methods of making and using these catalysts are also provided.Type: ApplicationFiled: August 9, 2007Publication date: February 12, 2009Inventor: Knut Wassermann
-
Publication number: 20080219906Abstract: A multilayered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Provided is a catalytic material of at least four layers in conjunction with a carrier, where each of the layers includes a support, at least three layers comprise a precious metal component, and at least one layer comprises an oxygen storage component (OSC). The catalytic material can further comprise a fifth layer, where at least four layers comprise a precious metal component, at least one layer comprises an oxygen storage component, and at least one layer is substantially free of an oxygen storage component.Type: ApplicationFiled: January 9, 2008Publication date: September 11, 2008Inventors: Shau-Lin F. Chen, Knut Wassermann, Stephan Siemund, Tian Luo, Torsten Neubauer, Jin Sakakibara, Harold Rabinowitz
-
Publication number: 20080038172Abstract: The present invention provides for novel poisoning-resistant catalysts used for automobile exhaust gas treatment systems. To alleviate the detrimental affects of engine oil and/or fuel additive poisoning the present invention provides for an overcoat layer comprising a porous refractory oxide and one or more base metal oxides, which is coated over one or more precious metal containing washcoat layers. The overcoat of the present invention prevents phosphorous as well as other poisoning deposits, from fouling and/or negatively interacting with the underlying precious metal containing washcoats. In an alternative embodiment, the present invention provides for the coating of the upstream end of a catalytic member by the overcoat layer, thereby creating an upstream poison capture zone.Type: ApplicationFiled: August 14, 2006Publication date: February 14, 2008Inventors: Shau-Lin Franklin Chen, Knut Wassermann, Jin Sakakibara
-
Publication number: 20040198592Abstract: A support for a catalyst for controlling vehicular exhaust emissions comprising a high surface area refractory metal oxide, e.g., gamma-alumina, having a monomolecular layer of a second oxide selected from the group consisting of titanium dioxide, cerium dioxide and zirconium dioxide. Typically, the monomolecular layer will have a thickness of less than about 10 angstroms. The support may be converted into a vehicular exhaust emission control catalyst by depositing the support on a substrate such as cordierite depositing a precious metal component such as platinum on at least part of the monomolecular layer. Preferably, the catalyst will also contain at least one NOx storage component deposited on at least part of the monomolecular layer. Catalysts prepared using the catalyst supports of the invention exhibit outstanding thermal stability and resistance to sulfur poisoning.Type: ApplicationFiled: April 4, 2003Publication date: October 7, 2004Applicant: ENGELHARD CORPORATIONInventors: Zhicheng Hu, Knut Wassermann, Patrick L. Burk, Youchang Xie, Wei Lin