Patents by Inventor Ralf Dotzel
Ralf Dotzel 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: 8815190Abstract: A wall-flow filter comprises a catalyst for converting oxides of nitrogen in the presence of a reducing agent, which wall-flow filter comprising an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilized ceria, which catalyst comprising at least one metal, wherein: the at least one metal is present throughout the extruded solid body alone or in combination with: is also present in a higher concentration at a surface of the extruded solid body; is also carried in one or more coating layer(s) on a surface of the extruded solid body; or both.Type: GrantFiled: November 12, 2013Date of Patent: August 26, 2014Assignee: Johnson Matthey Public Limited CompanyInventors: Ralf Dotzel, Rainer Leppelt, Jörg Werner Münch, Hubert Schedel
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Publication number: 20140157763Abstract: An extruded honeycomb catalyst for nitrogen oxide reduction according to the selective catalytic reduction (SCR) method in exhaust gases from motor vehicles includes an extruded active carrier in honeycomb form having a first SCR catalytically active component and with a plurality of channels through which the exhaust gas flows during operation, and a washcoat coating having a second SCR catalytically active component being applied to the extruded body, wherein the first SCR catalytically active component and the second SCR catalytically active component are each independently one of: (i) vanadium catalyst with vanadium as catalytically active component; (ii) mixed-oxide catalyst with one or more oxides, in particular those of transition metals or lanthanides as catalytically active component; and (iii) an Fe- or a Cu-zeolite catalyst.Type: ApplicationFiled: July 31, 2012Publication date: June 12, 2014Applicant: Johnson Matthey Public Limited CompanyInventors: Guy Richard Chandler, Neil Robert Collins, Ralf Dotzel, Jörg Werner Münch, Paul Richard Philips, Gudmund Smedler, Andrew Peter Walker
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Publication number: 20140072490Abstract: A wall-flow filter comprises a catalyst for converting oxides of nitrogen in the presence of a reducing agent, which wall-flow filter comprising an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilised ceria, which catalyst comprising at least one metal, wherein: the at least one metal is present throughout the extruded solid body alone or in combination with: is also present in a higher concentration at a surface of the extruded solid body; is also carried in one or more coating layer(s) on a surface of the extruded solid body; or both.Type: ApplicationFiled: November 12, 2013Publication date: March 13, 2014Applicant: Johnson Matthey Public Limited CompanyInventors: Ralf Dotzel, Rainer Leppelt, Jörg Werner Münch, Hubert Schedel
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Publication number: 20140065042Abstract: A three way catalyst includes an extruded solid body having by weight: 10-100% of at least one binder/matrix component; 5-90% of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% optionally stabilised ceria. The catalyst also includes at least one precious metal and optionally at least one non-precious metal, wherein: (i) the at least one precious metal is carried in one or more coating layer(s) on the body surface; (ii) at least one metal is present throughout the body and at least one precious metal is carried in one or more coating layer(s) on a body surface; or (iii) at least one metal is present throughout the body, is present in a higher concentration at a body surface, and at least one precious metal is carried in one or more coating layer(s) on the body surface.Type: ApplicationFiled: November 13, 2013Publication date: March 6, 2014Applicant: Johnson Matthey Public Limited CompanyInventors: Paul Joseph Andersen, Ralf Dotzel, Kwangmo Koo, Rainer Leppelt, Jörg Werner Münch, Jeffery Scott Rieck, Hubert Schedel, Duncan John William Winterborn, Todd Howard Ballinger, Julian Peter Cox
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Patent number: 8641993Abstract: A NOx absorber catalyst comprising an extruded solid body comprises either: (A) 10-95% by weight of at least one binder/matrix component; and 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof, which catalyst comprising at least one metal comprising (a) at least one precious metal; and (b) at least one alkali metal or at least one alkaline earth metal, wherein (a) and (b) are carried in one or more coating layer(s) on a surface of the extruded solid body; or (B) 10-95% by weight of at least one binder/matrix component; and 5-80% by weight optionally stabilized ceria, which catalyst comprising at least one metal comprising (a) at least one precious metal; and (b) at least one alkali metal or at least one alkaline earth metal.Type: GrantFiled: February 1, 2011Date of Patent: February 4, 2014Assignee: Johnson Matthey Public Limited Co.Inventors: Ralf Dotzel, Rainer Leppelt, Elizabeth Hazel Mountstevens, Jörg Werner Münch, Paul Richard Phillips, Hubert Schedel, Daniel Swallow
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Patent number: 8609047Abstract: A wall-flow filter comprises a catalyst for converting oxides of nitrogen in the presence of a reducing agent, which wall-flow filter comprising an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilized ceria, which catalyst comprising at least one metal, wherein: the at least one metal is present throughout the extruded solid body alone or in combination with: is also present in a higher concentration at a surface of the extruded solid body; is also carried in one or more coating layer(s) on a surface of the extruded solid body; or both.Type: GrantFiled: February 1, 2011Date of Patent: December 17, 2013Assignee: Johnson Matthey Public Limited CompanyInventors: Ralf Dotzel, Rainer Leppelt, Jörg Werner Münch, Hubert Schedel
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Patent number: 8603423Abstract: A three way catalyst includes an extruded solid body having: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve; and 0-80% by weight optionally stabilized ceria. The catalyst further includes at least one precious metal and optionally at least one non-precious metal. The at least one precious metal is carried in a coating layer on a surface of the extruded solid body; at least one metal is present throughout the extruded solid body and at least one precious metal is also carried in a coating layer on a surface of the extruded solid body; or at least one metal is present throughout the extruded solid body, is present in a higher concentration at a surface of the extruded solid body and at least one precious metal is also carried in a coating layer on the surface of the extruded solid body.Type: GrantFiled: February 1, 2011Date of Patent: December 10, 2013Assignee: Johnson Matthey Public Limited Co.Inventors: Paul Joseph Andersen, Ralf Dotzel, Kwangmo Koo, Rainer Leppelt, Jörg Werner Münch, Jeffery Scott Rieck, Hubert Schedel, Duncan John William Winterborn, Todd Howard Ballinger, Julian Peter Cox
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Patent number: 8263032Abstract: An oxidation catalyst comprises an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilized ceria, which catalyst comprising at least one precious metal and optionally at least one non-precious metal, wherein: (i) a majority of the at least one precious metal is located at a surface of the extruded solid body; (ii) the at least one precious metal is carried in one or more coating layer(s) on a surface; (iii) at least one metal is present throughout the extruded solid body and in a higher concentration at a surface; (iv) at least one metal is present throughout the extruded solid body and in a coating layer(s) on a surface; or (v) a combination of (ii) and (iii).Type: GrantFiled: February 1, 2011Date of Patent: September 11, 2012Assignee: Johnson Matthey Public Limited CompanyInventors: Paul Joseph Andersen, Todd Ballinger, David Bergeal, Hsiao-Lan Chang, Hai-Ying Chen, Julian Cox, Ralf Dotzel, Rainer Leppelt, Jörg Werner Münch, Hubert Schedel, Duncan John William Winterborn
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Publication number: 20120208692Abstract: An SCR-active zeolite catalyst and a method for producing same. To produce the catalyst, an Fe ion-exchanged zeolite is initially subjected to a first temperature treatment within a range of 300 to 600° C. in a reducing hydrocarbon atmosphere such that the oxidation state of the Fe ions decreases and/or the dispersity of the Fe ions on the zeolite increases, whereupon the reduced zeolite is subjected to a second temperature treatment within a range of 300 to 600° C. in an oxidizing atmosphere such that hydrocarbon residues or carbon residues are oxidatively removed, the zeolite being calcined to obtain a catalyst material during the two temperature treatments. Iron contained in the zeolite is stabilized in an oxidation state of less than +3 and/or the dispersity of the Fe ions on the zeolite is permanently increased such that a high SCR activity is achieved within a temperature range of less than 300° C.Type: ApplicationFiled: August 21, 2010Publication date: August 16, 2012Applicant: JOHNSON MATTHEY CATALYSTS (GERMANY) GMBHInventors: Jorg Werner Munch, Ralf Dotzel
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Publication number: 20120117953Abstract: A three way catalyst comprises an extruded solid body comprising: 10-100% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilised ceria, which catalyst comprising at least one precious metal and optionally at least one non-precious metal, wherein: (i) the at least one precious metal is carried in one or more coating layer(s) on a surface of the extruded solid body; (ii) at least one metal is present throughout the extruded solid body and at least one precious metal is also carried in one or more coating layer(s) on a surface of the extruded solid body; or (iii) at least one metal is present throughout the extruded solid body, is present in a higher concentration at a surface of the extruded solid body and at least one precious metal is also carried in one or more coating layer(s) on the surface of the extruded solid body.Type: ApplicationFiled: February 1, 2011Publication date: May 17, 2012Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Paul Joseph Andersen, Ralf Dotzel, Kwangmo Koo, Rainer Leppelt, Jörg Werner Münch, Jeffery Scott Rieck, Hubert Schedel, Duncan John William Winterborn, Todd Howard Ballinger, Julian Peter Cox
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Publication number: 20120117952Abstract: A wall-flow filter comprises a catalyst for converting oxides of nitrogen in the presence of a reducing agent, which wall-flow filter comprising an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilised ceria, which catalyst comprising at least one metal, wherein: the at least one metal is present throughout the extruded solid body alone or in combination with: is also present in a higher concentration at a surface of the extruded solid body; is also carried in one or more coating layer(s) on a surface of the extruded solid body; or both.Type: ApplicationFiled: February 1, 2011Publication date: May 17, 2012Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Ralf Dotzel, Rainer Leppelt, Jörg Werner Münch, Hubert Schedel
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Publication number: 20120122660Abstract: An oxidation catalyst comprises an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilised ceria, which catalyst comprising at least one precious metal and optionally at least one non-precious metal, wherein: (i) a majority of the at least one precious metal is located at a surface of the extruded solid body; (ii) the at least one precious metal is carried in one or more coating layer(s) on a surface; (iii) at least one metal is present throughout the extruded solid body and in a higher concentration at a surface; (iv) at least one metal is present throughout the extruded solid body and in a coating layer(s) on a surface; or (v) a combination of (ii) and (iii).Type: ApplicationFiled: February 1, 2011Publication date: May 17, 2012Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Paul Joseph Andersen, Todd Ballinger, David Bergeal, Hsiao-Lan Chang, Hai-Ying Chen, Julian Cox, Ralf Dotzel, Rainer Leppelt, Jörg Werner Münch, Hubert Schedel, Duncan John William Winterborn
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Publication number: 20120121486Abstract: A wall-flow filter for filtering particulate matter from a flowing exhaust gas comprises a catalyst for catalysing both the conversion of solid carbon in the particulate matter by oxygen and the selective reduction of oxides of nitrogen in the exhaust gas with a nitrogenous reductant, which catalyst comprising optionally stabilised ceria and at least one metal selected from (i) tungsten and (ii) both tungsten and iron.Type: ApplicationFiled: February 1, 2011Publication date: May 17, 2012Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Jillian Elaine Collier, Ralf Dotzel, Sylvie Cécile Laroze, Rainer Leppelt, Paul James Millington, Jörg Werner Münch, Raj Rao Rajaram, Hubert Schedel
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Publication number: 20120110988Abstract: A NOx absorber catalyst comprising an extruded solid body comprises either: (A) 10-95% by weight of at least one binder/matrix component; and 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof, which catalyst comprising at least one metal comprising (a) at least one precious metal; and (b) at least one alkali metal or at least one alkaline earth metal, wherein (a) and (b) are carried in one or more coating layer(s) on a surface of the extruded solid body; or (B) 10-95% by weight of at least one binder/matrix component; and 5-80% by weight optionally stabilised ceria, which catalyst comprising at least one metal comprising (a) at least one precious metal; and (b) at least one alkali metal or at least one alkaline earth metal.Type: ApplicationFiled: February 1, 2011Publication date: May 10, 2012Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Ralf Dotzel, Rainer Leppelt, Elizabeth Hazel Mountstevens, Jörg Werner Münch, Paul Richard Phillips, Hubert Schedel, Daniel Swallow
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Publication number: 20100295218Abstract: A process for the gentle and efficient drying of a ceramic honeycomb body is specified. The process is suitable for achieving, with uniform a drying of the honeycomb body, a short drying time and low shrinkage of the honeycomb body. For this, the honeycomb body which is in a moist prefabrication state is frozen and the moisture is removed from the frozen honeycomb body at a reduced pressure.Type: ApplicationFiled: November 13, 2008Publication date: November 25, 2010Applicant: Argillon GmbHInventors: Ralf Dotzel, Jörg Münch
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Patent number: 7507684Abstract: The invention relates to an extruded solid catalyst body for breaking down nitrogen oxides in the presence of a reducing agent as well as to a process for manufacture of said body. The solid catalyst body has an active material that contains 60 to 87% by weight of an ion-exchanged zeolite containing at least one metal from the group containing Cu, Hf, La, Au, In, V, lanthanoids and transition metals of group VIII of the periodic system, more than 10 to 37% by weight of aluminum oxide and 2 to 10% by weight of inorganic fibers. The solid catalyst body, the active material of which contains a zeolite can be manufactured by extrusion and has a high degree of mechanical stability at a high catalytic activity.Type: GrantFiled: December 29, 2006Date of Patent: March 24, 2009Assignee: Argillon GmbHInventors: Lothar Hofmann, Jörg Münch, Ralf Dotzel
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Publication number: 20070259770Abstract: The invention relates to an extruded solid catalyst body for breaking down nitrogen oxides in the presence of a reducing agent as well as to a process for manufacture of said body. The solid catalyst body has an active material that contains 60 to 87% by weight of an ion-exchanged zeolite containing at least one metal from the group containing Cu, Hf, La, Au, In, V, lanthanoids and transition metals of group VIII of the periodic system, more than 10 to 37% by weight of aluminum oxide and 2 to 10% by weight of inorganic fibers. The solid catalyst body, the active material of which contains a zeolite can be manufactured by extrusion and has a high degree of mechanical stability at a high catalytic activity.Type: ApplicationFiled: December 29, 2006Publication date: November 8, 2007Inventors: Lothar Hofmann, Jorg Munch, Ralf Dotzel