Patents by Inventor Johannes A. Lercher

Johannes A. Lercher 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: 12331009
    Abstract: A catalyst may include a support and from 5 to 20 wt.-% of a promoter, based on the total weight of the catalyst, wherein the support may include titanium dioxide, zirconium dioxide, and/or a mixture thereof, and the promoter may be an alkali metal oxide. Processes for preparing such catalysts may include impregnating a support of titanium dioxide and/or zirconium dioxide with an aqueous solution including a preferably soluble alkali compound and calcining. Alkyl mercaptans may be prepared in the presence of such catalysts or catalysts obtained by such processes.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: June 17, 2025
    Assignee: Evonik Operations GmbH
    Inventors: Ludger Lautenschuetz, Nadine Duerr, Achim Fischer, Manuel Weber-Stockbauer, Oliver Yair Gutierrez-Tinoco, Ricardo Bermejo Deval, Johannes A. Lercher
  • Publication number: 20220194896
    Abstract: A catalyst may include a support and from 5 to 20 wt.-% of a promoter, based on the total weight of the catalyst, wherein the support may include titanium dioxide, zirconium dioxide, and/or a mixture thereof, and the promoter may be an alkali metal oxide. Processes for preparing such catalysts may include impregnating a support of titanium dioxide and/or zirconium dioxide with an aqueous solution including a preferably soluble alkali compound and calcining. Alkyl mercaptans may be prepared in the presence of such catalysts or catalysts obtained by such processes.
    Type: Application
    Filed: January 27, 2020
    Publication date: June 23, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Ludger LAUTENSCHUETZ, Nadine DUERR, Achim FISCHER, Manuel WEBER-STOCKBAUER, Oliver Yair GUTIERREZ-TINOCO, Ricardo BERMEJO DEVAL, Johannes A. LERCHER
  • Patent number: 10647628
    Abstract: The invention relates to a catalyst system for oligomerizing olefins over a catalyst comprising nickel, to the use of this catalyst and to a method for dimerizing olefins.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: May 12, 2020
    Assignee: Evonik Degussa GmbH
    Inventors: Andreas Ehrmaier, Ricardo Bermejo De Val, Maria Cruz Sanchez-Sanchez, Yue Liu, Johannes A. Lercher, Stephan Peitz, Guido Stochniol
  • Publication number: 20180251410
    Abstract: The invention relates to a catalyst system for oligomerizing olefins over a catalyst comprising nickel, to the use of this catalyst and to a method for dimerizing olefins.
    Type: Application
    Filed: February 26, 2018
    Publication date: September 6, 2018
    Inventors: Andreas Ehrmaier, Ricardo Bermejo-Deval, Maria Cruz Sanchez-Sanchez, Yue Liu, Johannes A. Lercher, Stephan Peitz, Guido Stochniol
  • Patent number: 10065183
    Abstract: A process for preparing a catalyst provided in the form of a metal oxide catalyst having at least one element selected from Mo, Te, Nb, V, Cr, Dy, Ga, Sb, Ni, Co, Pt and Ce. The catalyst is subjected to an aftertreatment to increase the proportion of the M1 phase, by contacting the catalyst with steam at a pressure below 100 bar or by contacting the catalyst with oxygen to obtain an aftertreated catalyst. The aftertreated catalyst may be used for oxidative dehydrogenation processes.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: September 4, 2018
    Assignees: LINDE AKTIENGESELLSCHAFT, TECHNISCHE UNIVERSITAT MUNCHEN
    Inventors: Hans-Jörg Zander, Florian Winkler, Andreas Meiswinkel, Karl-Heinz Hofmann, Christian Thaller, Johannes A. Lercher, Daniela Hartmann, Andre Cornelis van Veen, Maria Cruz Sanchez-Sanchez
  • Patent number: 9745262
    Abstract: The invention relates to a process for continuously preparing methyl mercaptan by reacting a mixture comprising carbon compounds with sulfur and hydrogen, wherein the carbon disulfide and hydrogen sulfide compounds which form are subsequently converted to methyl mercaptan.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: August 29, 2017
    Assignee: EVONIK DEGUSSA GMBH
    Inventors: Jan-Olaf Barth, Christoph Weckbecker, Hubert Redlingshoefer, Johannes A. Lercher, Christoph Kaufmann
  • Publication number: 20160207035
    Abstract: A process for preparing a catalyst provided in the form of a metal oxide catalyst having at least one element selected from Mo, Te, Nb, V, Cr, Dy, Ga, Sb, Ni, Co, Pt and Ce. The catalyst is subjected to an aftertreatment to increase the proportion of the M1 phase, by contacting the catalyst with steam at a pressure below 100 bar or by contacting the catalyst with oxygen to obtain an aftertreated catalyst. The aftertreated catalyst may be used for oxidative dehydrogenation processes.
    Type: Application
    Filed: August 7, 2014
    Publication date: July 21, 2016
    Inventors: Hans-Jörg Zander, Florian Winkler, Andreas Meiswinkel, Karl-Heinz Hofmann, Christian Thaller, Johannes A. Lercher, Daniela Hartmann, Andre Cornelis van Veen, Maria Cruz Sanchez-Sanchez
  • Patent number: 9174204
    Abstract: The invention relates to a novel catalyst based on zeolite, the production of that catalyst, and the use of the catalyst in a method for producing lower olefins from oxygenates and for oligomerizing olefins. The novel catalyst has a SiO2/Al2O3 weight ratio of 2 to 9, a BET surface of 250 to 500 m2/g, and an Na content under 200 ppm. The catalyst includes a crystalline alumosilicate zeolite and a binder. The catalyst is characterized in that the ratio of the peak heights of its IR absorption bands v=3610 cm?1±20 cm?1/v=3680 cm?1±20 cm?1 is greater than 1.8.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: November 3, 2015
    Assignee: SUD-CHEMIE IP GMBH & CO. KG
    Inventors: Götz Burgfels, Stefan Klingelhöfer, Lay Hwa Ong, Roberta Olindo, Johannes A. Lercher, Friedrich Schmidt
  • Patent number: 9151813
    Abstract: Re-usable ceramic magic angle spinning (MAS) NMR rotors constructed of high-mechanic strength ceramics are detailed that include a sample compartment that maintains high pressures up to at least about 200 atmospheres (atm) and high temperatures up to about least about 300° C. during operation. The rotor designs minimize pressure losses stemming from penetration over an extended period of time. The present invention makes possible a variety of in-situ high pressure, high temperature MAS NMR experiments not previously achieved in the prior art.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: October 6, 2015
    Assignee: BATTELLE MEMORIAL INSTITUTE
    Inventors: Jian Zhi Hu, Mary Y. Hu, Mark R. Townsend, Johannes A. Lercher, Charles H. F. Peden
  • Publication number: 20140044598
    Abstract: Re-usable ceramic magic angle spinning (MAS) NMR rotors constructed of high-mechanic strength ceramics are detailed that include a sample compartment that maintains high pressures up to at least about 200 atmospheres (atm) and high temperatures up to about least about 300° C. during operation. The rotor designs minimize pressure losses stemming from penetration over an extended period of time. The present invention makes possible a variety of in-situ high pressure, high temperature MAS NMR experiments not previously achieved in the prior art.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 13, 2014
    Applicant: BATTELLE MEMORIAL INSTITUTE
    Inventors: Jian Zhi Hu, Mary Y. Hu, Mark R. Townsend, Johannes A. Lercher, Charles H. F. Peden
  • Publication number: 20130053609
    Abstract: The invention relates to a novel catalyst based on zeolite, the production of that catalyst, and the use of the catalyst in a method for producing lower olefins from oxygenates and for oligomerizing olefins. The novel catalyst has a SiO2/Al2O3 weight ratio of 2 to 9, a BET surface of 250 to 500 m2/g, and an Na content under 200 ppm. The catalyst includes a crystalline alumosilicate zeolite and a binder. The catalyst is characterized in that the ratio of the peak heights of its IR absorption bands v=3610 cm?1±20 cm?1/v=3680 cm?1±20 cm?1 is greater than 1.8.
    Type: Application
    Filed: January 26, 2011
    Publication date: February 28, 2013
    Applicant: SUD-CHEMIE IP GMBH & CO. KG
    Inventors: Götz Burgfels, Stefan Klingelhöfer, Lay Hwa Ong, Roberta Olindo, Johannes A. Lercher, Friedrich Schmidt
  • Publication number: 20110015443
    Abstract: The invention relates to a process for continuously preparing methyl mercaptan by reacting a mixture comprising carbon compounds with sulfur and hydrogen, wherein the carbon disulfide and hydrogen sulfide compounds which form are subsequently converted to methyl mercaptan.
    Type: Application
    Filed: July 15, 2010
    Publication date: January 20, 2011
    Applicant: Evonik Degussa GmbH
    Inventors: Jan-Olaf Barth, Christoph Weckbecker, Hubert Redlingshöefer, Johannes A. Lercher, Christoph Kaufmann
  • Patent number: 7459412
    Abstract: A catalyst for acid-catalyzed hydrocarbon conversions, in particular for the alkylation of olefins with isoparaffins, containing a crystalline zeolite with an SiO2—Al2O3 molar ratio of <10, the alkali cations of which are at least partially replaced by H+ ions and/or polyvalent cations, the residual concentration of alkali cations amounting to less than around 0.2% by weight, the concentration of the Bronsted centers, determined as a function of the pyridine chemisorbed on the catalyst surface, amounting to around 0.1 to 4 mmol/g of catalyst, and the ratio between the concentration of the acid centers of the Bronsted type (B) and of the Lewis type (L), expressed as the surface ratio of the absorption bands at 1540 ±5 cm?1 (B) and 1450 5 cm?1 (L) after heating to a temperature of 450° C amounting to around 1.4 or higher, is described.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: December 2, 2008
    Assignee: Sud-Chemie AG
    Inventors: Johannes A. Lercher, Andreas Feller, Stefan Gaab
  • Publication number: 20040181108
    Abstract: A catalyst for acid-catalyzed hydrocarbon conversions, in particular for the alkylation of olefins with isoparaffins, containing a crystalline zeolite with an SiO2—Al2O3 molar ratio of <10, the alkali cations of which are at least partially replaced by H+ ions and/or polyvalent cations, the residual concentration of alkali cations amounting to less than around 0.2% by weight, the concentration of the Bronsted centers, determined as a function of the pyridine chemisorbed on the catalyst surface, amounting to around 0.1 to 4 mmol/g of catalyst, and the ratio between the concentration of the acid centers of the Bronsted type (B) and of the Lewis type (L), expressed as the surface ratio of the absorption bands at 1540±5 cm−1 (B) and 1450±5 cm−1 (L) after heating to a temperature of 450° C. amounting to around 1.4 or higher, is described.
    Type: Application
    Filed: April 28, 2004
    Publication date: September 16, 2004
    Inventors: Johannes A. Lercher, Andreas Feller, Stefan Gaab