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).

  • Patent number: 8815190
    Abstract: 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: Grant
    Filed: November 12, 2013
    Date of Patent: August 26, 2014
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Ralf Dotzel, Rainer Leppelt, Jörg Werner Münch, Hubert Schedel
  • Publication number: 20140157763
    Abstract: 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: Application
    Filed: July 31, 2012
    Publication date: June 12, 2014
    Applicant: Johnson Matthey Public Limited Company
    Inventors: Guy Richard Chandler, Neil Robert Collins, Ralf Dotzel, Jörg Werner Münch, Paul Richard Philips, Gudmund Smedler, Andrew Peter Walker
  • Publication number: 20140072490
    Abstract: 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: Application
    Filed: November 12, 2013
    Publication date: March 13, 2014
    Applicant: Johnson Matthey Public Limited Company
    Inventors: Ralf Dotzel, Rainer Leppelt, Jörg Werner Münch, Hubert Schedel
  • Publication number: 20140065042
    Abstract: 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: Application
    Filed: November 13, 2013
    Publication date: March 6, 2014
    Applicant: Johnson Matthey Public Limited Company
    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
  • Patent number: 8641993
    Abstract: 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: Grant
    Filed: February 1, 2011
    Date of Patent: February 4, 2014
    Assignee: Johnson Matthey Public Limited Co.
    Inventors: Ralf Dotzel, Rainer Leppelt, Elizabeth Hazel Mountstevens, Jörg Werner Münch, Paul Richard Phillips, Hubert Schedel, Daniel Swallow
  • Patent number: 8609047
    Abstract: 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: Grant
    Filed: February 1, 2011
    Date of Patent: December 17, 2013
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Ralf Dotzel, Rainer Leppelt, Jörg Werner Münch, Hubert Schedel
  • Patent number: 8603423
    Abstract: 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: Grant
    Filed: February 1, 2011
    Date of Patent: December 10, 2013
    Assignee: 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
  • Patent number: 8263032
    Abstract: 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: Grant
    Filed: February 1, 2011
    Date of Patent: September 11, 2012
    Assignee: Johnson Matthey Public Limited Company
    Inventors: 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
  • Publication number: 20120208692
    Abstract: 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: Application
    Filed: August 21, 2010
    Publication date: August 16, 2012
    Applicant: JOHNSON MATTHEY CATALYSTS (GERMANY) GMBH
    Inventors: Jorg Werner Munch, Ralf Dotzel
  • Publication number: 20120117953
    Abstract: 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: Application
    Filed: February 1, 2011
    Publication date: May 17, 2012
    Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    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
  • Publication number: 20120117952
    Abstract: 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: Application
    Filed: February 1, 2011
    Publication date: May 17, 2012
    Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Ralf Dotzel, Rainer Leppelt, Jörg Werner Münch, Hubert Schedel
  • Publication number: 20120122660
    Abstract: 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: Application
    Filed: February 1, 2011
    Publication date: May 17, 2012
    Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: 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
  • Publication number: 20120121486
    Abstract: 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: Application
    Filed: February 1, 2011
    Publication date: May 17, 2012
    Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Jillian Elaine Collier, Ralf Dotzel, Sylvie Cécile Laroze, Rainer Leppelt, Paul James Millington, Jörg Werner Münch, Raj Rao Rajaram, Hubert Schedel
  • Publication number: 20120110988
    Abstract: 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: Application
    Filed: February 1, 2011
    Publication date: May 10, 2012
    Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Ralf Dotzel, Rainer Leppelt, Elizabeth Hazel Mountstevens, Jörg Werner Münch, Paul Richard Phillips, Hubert Schedel, Daniel Swallow
  • Publication number: 20100295218
    Abstract: 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: Application
    Filed: November 13, 2008
    Publication date: November 25, 2010
    Applicant: Argillon GmbH
    Inventors: Ralf Dotzel, Jörg Münch
  • Patent number: 7507684
    Abstract: 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: Grant
    Filed: December 29, 2006
    Date of Patent: March 24, 2009
    Assignee: Argillon GmbH
    Inventors: Lothar Hofmann, Jörg Münch, Ralf Dotzel
  • Publication number: 20070259770
    Abstract: 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: Application
    Filed: December 29, 2006
    Publication date: November 8, 2007
    Inventors: Lothar Hofmann, Jorg Munch, Ralf Dotzel