Patents by Inventor Stefan Maurer

Stefan Maurer 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: 20210221695
    Abstract: The present invention relates to a process for the calcination of a zeolitic material, wherein said process comprises the steps of (i) providing a zeolitic material comprising YO2 and optionally further comprising X2O3 in its framework structure in the form of a powder and/or of a suspension of the zeolitic material in a liquid, wherein Y stands for a tetravalent element and X stands for a trivalent element; (ii) atomization of the powder and/or of the suspension of the zeolitic material provided in (i) in a gas stream for obtaining an aerosol; (iii) calcination of the aerosol obtained in (ii) for obtaining a calcined powder; as well as to a zeolitic material obtainable and/or obtained according the inventive process, and to its use as a molecular sieve, as an adsorbent, for ion-exchange, as a catalyst, and/or as a catalyst support.
    Type: Application
    Filed: March 31, 2021
    Publication date: July 22, 2021
    Inventors: Benedikt Kalo, Thomas Geiger, Rene Koenig, Ulrich Mueller, Stefan Maurer
  • Publication number: 20210213434
    Abstract: The present disclosure is directed to a Low Temperature NOx-Absorber (LT-NA) catalyst composition which exhibits NOx adsorption in a broad temperature and space velocity range, and shifts NOx desorption to a desired temperature range. In particular, the LT-NA composition includes a large pore zeolite containing a palladium component and a small or medium pore zeolite containing a palladium component. Further provided is a catalyst article including the LT-NA catalyst composition, an emission treatment system for treating an exhaust gas including the catalyst article, and methods for reducing a NOx level in an exhaust gas stream using the catalyst article.
    Type: Application
    Filed: May 29, 2019
    Publication date: July 15, 2021
    Applicant: BASF Corporation
    Inventors: Jia Cheng LIU, Evan Vincent MIU, Xiaoming XU, Xinyi WEI, Stefan MAURER
  • Patent number: 10995008
    Abstract: A process for the calcination of a zeolitic material, wherein the process contains the steps of (i) providing a zeolitic material containing YO2 and optionally further containing X2O3 in its framework structure in the form of a powder and/or of a suspension of the zeolitic material in a liquid, wherein Y stands for a tetravalent element and X stands for a trivalent element; (ii) atomization of the powder and/or of the suspension of the zeolitic material provided in (i) in a gas stream for obtaining an aerosol; and (iii) calcination of the aerosol obtained in (ii) for obtaining a calcined powder, a zeolitic material obtained by the above process, and its use as a molecular sieve, as an adsorbent, for ion-exchange, as a catalyst, and/or as a catalyst support.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: May 4, 2021
    Assignee: BASF SE
    Inventors: Benedikt Kalo, Thomas Geiger, Rene Koenig, Ulrich Mueller, Stefan Maurer
  • Patent number: 10888838
    Abstract: The present invention relates to porous films comprising (A) from 51 wt.-% to 99.9 wt.-% based on the total weight of the film of at least one porous metal-organic framework material, the material comprising at least one at least bidentate organic compound coordinated to at least one metal ion; (B) from 0.1 wt.-% to 49 wt.-% based on the total weight of the film of at least one fibrillated fluoropolymer; and (C) 0 wt.-% to 48.9 wt.-% based on the total weight of the film of an additive component. The invention further relates to a composition for preparing such a film and its use.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: January 12, 2021
    Assignee: BASF SE
    Inventors: Matthias G. Schwab, Stefan Maurer, Waldemar Bartuli, Ulrich Müller
  • Patent number: 10870583
    Abstract: A process for preparing a zeolitic material containing YO2 and X2O3, where Y and X represent a tetravalent element and a trivalent element, respectively, is described. The process includes (1) a step of preparing a mixture containing one or more structure directing agents, seed crystals, and a first zeolitic material containing YO2 and X2O3 and having FAU-, GIS-, MOR-, and/or LTA-type framework structures; and (2) a step of heating the mixture for obtaining a second zeolitic material containing YO2 and X2O3 and having a different framework structure than the first zeolitic material. The mixture prepared in (1) and heated in (2) contains 1000 wt % or less of H2O based on 100 wt % of YO2 in the framework structure of the first zeolitic material. A zeolitic material obtainable and/or obtained by the process and its use are also described.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: December 22, 2020
    Assignee: BASF SE
    Inventors: Robert McGuire, Mathias Feyen, Ulrich Mueller, Xinhe Bao, Weiping Zhang, Dirk De Vos, Hermann Gies, Feng-Shou Xiao, Toshiyuki Yokoi, Ute Kolb, Bernd Marler, Chuan Shi, Xiulian Pan, Xiangju Meng, Stefan Maurer, Yu Dai, Yong Wang, Trees De Baerdemaeker
  • Publication number: 20200368685
    Abstract: The present invention relates to a process for the treatment of a gas stream containing nitrogen oxides comprising the steps of: (1) providing a gas stream containing one or more nitrogen oxides; (2) contacting the gas stream provided in step (1) with a transition metal containing zeolitic material having a BEA-type framework structure for reacting one or more of the nitrogen oxides; wherein the zeolitic material is obtainable from an organotemplate-free synthetic process, as well as to an apparatus for the treatment of a gas stream comprising containing nitrogen oxides.
    Type: Application
    Filed: August 10, 2020
    Publication date: November 26, 2020
    Applicant: BASF SE
    Inventors: Stephan DEUERLEIN, Stefan MAURER
  • Publication number: 20200339430
    Abstract: Described herein is a process for producing a zeolitic material having an MWW framework structure containing YO2 and B2O3, in which Y stands for a tetravalent element. The process includes the steps of (i) preparing a mixture containing one or more sources for YO2, one or more sources for B2O3, one or more organotemplates, and seed crystals, (ii) crystallizing the mixture obtained in (i) for obtaining a layered precursor of the MWW framework structure, and (iii) calcining the layered precursor obtained in (ii) for obtaining the zeolitic material having an MWW framework structure. Also disclosed herein are synthetic boron-containing zeolites obtain by the process and uses thereof.
    Type: Application
    Filed: September 5, 2017
    Publication date: October 29, 2020
    Applicant: BASF SE
    Inventors: Andrei-Nicolae PARVULESCU, Ulrich MUELLER, Stefan MAURER, Yu DAI, Feng-Shou XIAO, Xiangju MENG, Yeqing WANG
  • Publication number: 20200317532
    Abstract: A process for preparing a zeolitic material having a zeolitic framework structure which exhibits a molar ratio (aAl2O3):SiO2 or a crystalline precursor thereof, comprising (i) preparing a mixture comprising H2O, one or more compounds comprising Si from which SiO2 in the zeolitic framework structure is formed, said one or more compounds comprising a silica gel exhibiting a molar ratio (c H2O):SiO2 and optionally one or more compounds comprising Al from which Al2O3 in the zeolitic framework structure is formed; (ii) subjecting the mixture obtained in (i) to crystallization at a crystallization temperature in the range of from 110 to 350° C., preferably in the range of from 190 to 350° C., and for a crystallization time in the range of from 0.1 to 48 h.
    Type: Application
    Filed: September 22, 2017
    Publication date: October 8, 2020
    Applicant: BASF SE
    Inventors: Andrei-Nicolae PARVULESCU, Stefan MAURER, Yu DAI, UIrich MUELLER, Fengshou XIAO, Chaoqun BIAN, Robert MCGUIRE
  • Patent number: 10792614
    Abstract: Described is a process for the treatment of a gas stream containing nitrogen oxides. The process comprises the steps of: (1) providing a gas stream containing one or more nitrogen oxides; (2) contacting the gas stream provided in step (1) with a transition metal containing zeolitic material having a BEA-type framework structure for reacting one or more of the nitrogen oxides; wherein the zeolitic material is obtainable from an organotemplate-free synthetic process. Also described is an apparatus for the treatment of a gas stream comprising containing nitrogen oxides.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: October 6, 2020
    Assignee: BASF SE
    Inventors: Stephan Deuerlein, Stefan Maurer
  • Patent number: 10793443
    Abstract: The present invention relates to a process for the production of a boron-containing zeolitic material having an MWW framework structure comprising YO2 and B2O3, wherein Y stands for a tetravalent element, wherein said process comprises (a) providing a mixture comprising one or more sources for YO2, one or more sources for B2O3, one or more organotemplates, and seed crystals, (b) crystallizing the mixture obtained in (a) for obtaining a layered precursor of the boron-containing MWW-type zeolitic material, (c) calcining the layered precursor obtained in (b) for obtaining the boron-containing zeolitic material having an MWW framework structure, wherein the one or more organotemplates have the formula (I) R1R2R3N??(I) wherein R1 is (C5-C8)cycloalkyl, and wherein R2 and R3 are independently from each other H or alkyl, as well as to a synthetic boron-containing zeolite which is obtainable and/or obtained according to the inventive process as well as to its use.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: October 6, 2020
    Assignee: BASF SE
    Inventors: Stefan Maurer, Andrei-Nicolae Parvulescu, Ulrich Mueller, Xiangju Meng, Feng-Shou Xiao, Yeqing Wang
  • Publication number: 20200290884
    Abstract: A process for the calcination of a zeolitic material, wherein the process contains the steps of (i) providing a zeolitic material containing YO2 and optionally further containing X2O3 in its framework structure in the form of a powder and/or of a suspension of the zeolitic material in a liquid, wherein Y stands for a tetravalent element and X stands for a trivalent element; (ii) atomization of the powder and/or of the suspension of the zeolitic material provided in (i) in a gas stream for obtaining an aerosol; and (iii) calcination of the aerosol obtained in (ii) for obtaining a calcined powder, a zeolitic material obtained by the above process, and its use as a molecular sieve, as an adsorbent for ion-exchange, as a catalyst, and/or as a catalyst support.
    Type: Application
    Filed: March 22, 2017
    Publication date: September 17, 2020
    Applicant: BASF SE
    Inventors: Benedikt KALO, Thomas GEIGER, Rene KOENIG, Ulrich MUELLER, Stefan MAURER
  • Patent number: 10596518
    Abstract: The present invention relates to a process for the production of a zeolitic material having a BEA-type framework structure comprising YO2 and X2O3, wherein said process comprises the steps of (1) preparing a mixture comprising one or more sources for YO2 and one or more sources for X2O3; (2) crystallizing the mixture obtained in step (1); (3) subjecting the zeolitic material having a BEA-type framework structure obtained in step (2) to an ion-exchange procedure with Cu; and (4) subjecting the Cu ion-exchanged zeolitic material obtained in step (3) to an ion-exchange procedure with Fe; wherein Y is a tetravalent element, and X is a trivalent element, wherein the mixture provided in step (1) and crystallized in step (2) further comprises seed crystals comprising one or more zeolitic materials having a BEA-type framework structure, and wherein the mixture provided in step (1) and crystallized in step (2) does not contain an organotemplate as a structure-directing agent, as well as to the zeolitic material having
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: March 24, 2020
    Assignees: BASF SE, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Mathias Feyen, Stefan Maurer, Ulrich Mueller, Xinhe Bao, Weiping Zhang, Dirk De Vos, Hermann Gies, Feng-Shou Xiao, Toshiyuki Yokoi, Bilge Yilmaz
  • Patent number: 10556801
    Abstract: The present invention relates to a method for the preparation of a treated zeolitic material having a BEA framework structure including the steps of: (i) providing a zeolitic material having a BEA framework structure, wherein the BEA framework structure includes YO2 and X2O3, wherein Y is a tetravalent element, and X is a trivalent element, and wherein the zeolitic material having a BEA framework structure is obtainable and/or obtained from an organotemplate-free synthetic process; (ii) calcining the zeolitic material provided in step (i) at a temperature of 650° C. or more; and (iii) treating the calcined zeolitic material obtained from step (ii) with an aqueous solution having a pH of 5 or less, as well as to zeolitic materials per se preferably obtainable according to the inventive method and to their use, and to a process for converting oxygenates to olefins employing the inventive zeolitic materials.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: February 11, 2020
    Assignee: BASF SE
    Inventors: Mathias Feyen, Stefan Maurer, Ulrich Mueller, Xinhe Bao, Weiping Zhang, Dirk de Vos, Hermann Gies, Feng-Shou Xiao, Yokoi Toshiyuki, Bilge Yilmaz, Ryoichi Otomo
  • Publication number: 20190375724
    Abstract: A process for preparing a cyclic diester or a cyclic diamide by reacting a hydroxycarboxylic acid or amide with an acidic BEA (H-beta polymorph A) type zeolite. The process is characterised in that the total amount of acid sites is in the range of from 0.25 to 1.0 mmol/g and the amount of medium acid sites is at least 40% of the total amount of acid sites. The total amount of acid sites and the amount of medium acid sites are determined by NH3-TPD (temperature-programmed desorption of ammonia). Preferably, the process refers to the preparation of lactide from lactic acid. The framework structure of the zeolitic material comprises Si, Al, O, and H.
    Type: Application
    Filed: March 14, 2018
    Publication date: December 12, 2019
    Applicant: BASF SE
    Inventors: Alvaro GORDILLO, Andrei-Nicolae PARVULESCU, Henelyta SANTOS RIBEIRO, Joerg ROTHER, Ivana JEVTOVIKJ, Ulrich MUELLER, Stefan MAURER
  • Publication number: 20190300375
    Abstract: A process for preparing a zeolitic material containing YO2 and X2O3, where Y and X represent a tetravalent element and a trivalent element, respectively, is described. The process includes (1) a step of preparing a mixture containing one or more structure directing agents, seed crystals, and a first zeolitic material containing YO2 and X2O3 and having FAU-, GIS-, MOR-, and/or LTA-type framework structures; and (2) a step of heating the mixture for obtaining a second zeolitic material containing YO2 and X2O3 and having a different framework structure than the first zeolitic material. The mixture prepared in (1) and heated in (2) contains 1000 wt % or less of H2O based on 100 wt % of YO2 in the framework structure of the first zeolitic material. A zeolitic material obtainable and/or obtained by the process and its use are also described.
    Type: Application
    Filed: December 13, 2017
    Publication date: October 3, 2019
    Applicant: BASF SE
    Inventors: Robert MCGUIRE, Mathias FEYEN, Ulrich MUELLER, Xinhe BAO, Weiping ZHANG, Dirk DE VOS, Hermann GIES, Feng-Shou XIAO, Toshiyuki YOKOI, Ute KOLB, Bernd MARLER, Chuan SHI, Xiulian PAN, Xiangju MENG, Stefan MAURER, Yu DAI, Yong WANG, Trees DE BAERDEMAEKER
  • Publication number: 20190177174
    Abstract: The present invention relates to a process for the production of a boron-containing zeolitic material having an MWW framework structure comprising YO2 and B2O3, wherein Y stands for a tetravalent element, wherein said process comprises (a) providing a mixture comprising one or more sources for YO2, one or more sources for B2O3, one or more organotemplates, and seed crystals, (b) crystallizing the mixture obtained in (a) for obtaining a layered precursor of the boron-containing MWW-type zeolitic material, (c) calcining the layered precursor obtained in (b) for obtaining the boron-containing zeolitic material having an MWW framework structure, wherein the one or more organotemplates have the formula (I) R1R2R3N??(I) wherein R1 is (C5-C8)cycloalkyl, and wherein R2 and R3 are independently from each other H or alkyl, as well as to a synthetic boron-containing zeolite which is obtainable and/or obtained according to the inventive process as well as to its use.
    Type: Application
    Filed: November 28, 2018
    Publication date: June 13, 2019
    Applicant: BASF SE
    Inventors: Stefan MAURER, Andrei-Nicolae PARVULESCU, Ulrich MUELLER, Xiangju MENG, Feng-Shou XIAO, Yeqing WANG
  • Patent number: 10301185
    Abstract: The present invention relates to a process for the preparation of a zeolitic material comprising YO2 in its framework structure, wherein Y stands for a tetravalent element, wherein said process comprises the steps of: (1) providing a mixture comprising one or more sources for YO2, one or more fluoride containing compounds, and one or more structure directing agents; (2) crystallizing the mixture obtained in step (1) for obtaining a zeolitic material comprising YO2 in its framework structure; wherein the mixture provided in step (1) and crystallized in step (2) contains 35 wt.-% or less of H2O based on 100 wt.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: May 28, 2019
    Assignee: BASF SE
    Inventors: Stefan Maurer, Ulrich Müller, Feng-Shou Xiao, Xiangju Meng, Qinming Wu
  • Publication number: 20190134564
    Abstract: A catalyst for the selective catalytic reduction of NOx comprises a zeolitic material which comprises (A) one or more zeolites having a GME framework structure containing YO2 and X2O3, and optionally further comprises one or more zeolites having a CHA framework structure containing YO2 and X2O3, and/or comprises, (B) one or more zeolite intergrowth phases of one or more zeolites having a GME framework structure containing YO2 and X2O3 and one or more zeolites having a CHA framework structure containing YO2 and X2O3, wherein Y is a tetravalent element, and X is a trivalent element, and the zeolitic material contains Cu and/or Fe as non-framework elements in an amount ranging from 0.1 to 15 wt. % calculated as the element and based on 100 wt. % of YO contained in the zeolitic material. Also provided are a process for its preparation, and a use in a method for the selective catalytic reduction of NOx.
    Type: Application
    Filed: June 2, 2017
    Publication date: May 9, 2019
    Applicant: BASF Corporation
    Inventors: Mathias FEYEN, Ulrich MUELLER, Faruk OEZKIRIM, Stefan DUMSER, Natalia TRUKHAN, Michaela MALTRY, Stefan MAURER
  • Patent number: 10196275
    Abstract: The present invention relates to a process for the production of a zeolitic material having a framework structure comprising YO2, wherein said process comprises: (1) preparing a mixture comprising one or more tetravalent elements Y in elemental form, one or more organic hydroxide salts, and one or more protic solvents; (2) reacting the mixture obtained in step (1) for converting at least part of the one or more tetravalent elements Y into an oxidic form thereof containing one or more Y—O single bonds and/or one or more Y?O double bonds; and (3) crystallizing a zeolitic material from the mixture obtained in step (2).
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: February 5, 2019
    Assignee: BASF SE
    Inventors: Stefan Maurer, Roger Ruetz, Julia Petry, Ulrich Mueller
  • Patent number: 10196276
    Abstract: The present invention relates to a process for the production of a boron-containing zeolitic material having an MWW framework structure comprising YO2 and B2O3, wherein Y stands for a tetravalent element, wherein said process comprises (a) providing a mixture comprising one or more sources for YO2, one or more sources for B2O3, one or more organotemplates, and seed crystals, (b) crystallizing the mixture obtained in (a) for obtaining a layered precursor of the boron-containing MWW-type zeolitic material, (c) calcining the layered precursor obtained in (b) for obtaining the boron-containing zeolitic material having an MWW framework structure, wherein the one or more organotemplates have the formula (I): R1R2R3N, wherein R1 is (C5-C8)cycloalkyl, and wherein R2 and R3 are independently from each other H or alkyl, as well as to a synthetic boron-containing zeolite which is obtainable and/or obtained according to the inventive process as well as to its use.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: February 5, 2019
    Assignee: BASF SE
    Inventors: Stefan Maurer, Andrei-Nicolae Parvulescu, Ulrich Mueller, Xiangju Meng, Feng-Shou Xiao, Yeqing Wang