Patents by Inventor Signe Unverricht

Signe Unverricht 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: 20220259131
    Abstract: A process for the continuous production of either acrolein or acrylic acid as the target product from propene comprising a catalyzed gas phase partial oxidation of propene to yield a product gas containing the target product, transferring the target product in a separating zone from the product gas into the liquid phase and conducting out of the separating zone a stream of residual gas the major portion of which is returned into the partial oxidation and the remaining portion of said stream is purged from the process as off-gas from which synthesis gas can be produced or which can be added to synthesis gas produced otherwise.
    Type: Application
    Filed: July 14, 2020
    Publication date: August 18, 2022
    Inventors: Kazuhiko AMAKAWA, Lukas SCHULZ, Michael BENDER, Klaus Joachim MUELLER-ENGEL, Christian WALSDORFF, Signe UNVERRICHT
  • Publication number: 20190337870
    Abstract: Process for preparing butadiene from n-butenes, which has a start-up phase and an operating phase and the operating phase of the process comprises the steps: A) provision of a feed gas stream a1 comprising n-butenes; B) introduction of the feed gas stream a1 comprising n-butenes, an oxygen-comprising gas stream a2 and an oxygen-comprising recycle gas stream d2 into at least one oxidative dehydrogenation zone and oxidative dehydrogenation of n-butenes to butadiene, giving a product gas stream b comprising butadiene; C) cooling and compression of the product gas stream b, giving at least one aqueous condensate stream c1 and a gas stream c2 comprising butadiene; D) introduction of the gas stream c2 into an absorption zone and separation of incondensable and low-boiling gas constituents as gas stream d from the gas stream c2 by absorption of the C4 hydrocarbons in an absorption medium, giving an absorption medium stream loaded with C4 hydrocarbons and the gas stream d, and recirculation of the gas stream d as re
    Type: Application
    Filed: August 8, 2017
    Publication date: November 7, 2019
    Inventors: JAN UNGELENK, Oliver HAMMEN, Ulrich HAMMON, Rainer ECKRICH, Signe UNVERRICHT, Christian WALSDORFF, Heinz BOELT, Hendrik REYNEKE, Christine TOEGEL, Anton WELLENHOFER, Ulrike WENNING
  • Publication number: 20190015783
    Abstract: Catalysts comprising metal-loaded non-zeolitic molecular sieves having the CHA crystal structure, including Cu-SAPO-34, and methods for treating exhaust gas incorporating such catalysts are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stability at high reaction temperatures.
    Type: Application
    Filed: September 12, 2018
    Publication date: January 17, 2019
    Inventors: Ivor Bull, Gerald Stephen Koermer, Ahmad Moini, Signe Unverricht
  • Patent number: 10105649
    Abstract: Catalysts comprising metal-loaded non-zeolitic molecular sieves having the CHA crystal structure, including Cu-SAPO-34, and methods for treating exhaust gas incorporating such catalysts are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stability at high reaction temperatures.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: October 23, 2018
    Assignee: BASF Corporation
    Inventors: Ivor Bull, Gerald S. Koermer, Ahmad Moini, Signe Unverricht
  • Patent number: 8617474
    Abstract: Systems for treating exhaust gas incorporating catalysts comprising metal-loaded non-zeolitic molecular sieves having the CHA crystal structure, including Cu-SAPO-34, and methods for preparing such catalysts are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stability at high reaction temperatures.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: December 31, 2013
    Assignee: BASF Corporation
    Inventors: Ivor Bull, Gerald Stephen Koermer, Ahmad Moini, Signe Unverricht
  • Publication number: 20110300028
    Abstract: Systems for treating exhaust gas incorporating catalysts comprising metal-loaded non-zeolitic molecular sieves having the CHA crystal structure, including Cu-SAPO-34, and methods for preparing such catalysts are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stability at high reaction temperatures.
    Type: Application
    Filed: August 22, 2011
    Publication date: December 8, 2011
    Applicant: BASF Corporation
    Inventors: Ivor Bull, Gerald S. Koermer, Ahmad Moini, Signe Unverricht
  • Publication number: 20110300042
    Abstract: Catalysts comprising metal-loaded non-zeolitic molecular sieves having the CHA crystal structure, including Cu-SAPO-34, and methods for treating exhaust gas incorporating such catalysts are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stability at high reaction temperatures.
    Type: Application
    Filed: August 22, 2011
    Publication date: December 8, 2011
    Applicant: BASF Corporation
    Inventors: Ivor Bull, Gerald S. Koermer, Ahmad Moini, Signe Unverricht
  • Patent number: 7777082
    Abstract: A process for preparing annular unsupported catalysts by thermally treating annular shaped unsupported catalyst precursor bodies, wherein the side crushing strength of the annular shaped unsupported catalyst precursor bodies is ?12 N and ?23 N; such precursor bodies per se; annular unsupported catalysts having a specific pore structure; and a method of using such annular unsupported catalysts for the catalytic partial oxidative preparation in the gas phase of (meth)acrolein.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: August 17, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Jochen Petzoldt, Klaus Joachim Mueller-Engel, Signe Unverricht
  • Patent number: 7589046
    Abstract: In a process for the thermal treatment of the precursor material of a catalytically active material in a rotary tube furnace through which a gas stream flows, at least a proportion of the gas stream flowing through the rotary tube furnace is circulated, and the associated rotary tube furnace apparatus and tube-bundle reactors for the partial gas-phase oxidation of acrolein to acrylic acid are loaded with catalysts whose catalytically active material is obtainable by the process for the thermal treatment.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: September 15, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Wolfgang Juergen Poepel, Silke Berndt, Raimund Felder, Signe Unverricht, Klaus Joachim Mueller-Engel
  • Publication number: 20090196812
    Abstract: Catalysts comprising metal-loaded non-zeolitic molecular sieves having the CHA crystal structure, including Cu-SAPO-34, methods for preparing such catalysts, and systems and methods for treating exhaust gas incorporating such catalysts are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stability at high reaction temperatures.
    Type: Application
    Filed: January 29, 2009
    Publication date: August 6, 2009
    Applicant: BASF Catalysts LLC
    Inventors: Ivor Bull, Gerald S. Koermer, Ahmad Moini, Signe Unverricht
  • Publication number: 20090171117
    Abstract: A catalyst suitable for the gas-phase oxidation of organic compounds to ?,?-unsaturated aldehydes and/or carboxylic acids and having an active phase comprising a multimetal oxide material is prepared by a process in which a particulate catalyst precursor which contains oxides and/or compounds of the elements other than oxygen which constitute the multimetal oxide material, which compounds can be converted into oxides, is prepared and said catalyst precursor is converted by calcination into a catalytically active form, wherein a stream of the particulate catalyst precursor is passed at substantially constant speed through at least one calcination zone at constant temperature for calcination.
    Type: Application
    Filed: March 2, 2009
    Publication date: July 2, 2009
    Applicant: BASF Aktiengesellschaft
    Inventors: Heiko Arnold, Signe Unverricht, Raimund Felder, Klaus Harth, Klaus Joachim Muller-Engel
  • Patent number: 7263822
    Abstract: For a process for the catalytic conversion of furl for removing oxides of nitrogen from exhaust gases of internal combustion engines, in which fuel and a part-stream of the exhaust gas or of the intake air are converted in a converter, the fuel and the part-stream of the exhaust gas or of the intake air are fed separately from one another into the converter and the fuel is vaporized in the converter. A converter for the catalytic conversion of fuel, comprising a vaporization space and a conversion space connected thereto is furthermore described, the vaporization space having separate feeds for exhaust gas or intake air and fuel, the conversion space having a catalyst for the catalytic conversion of fuel and the vaporization space and the conversion space being connected to one another so that heat transport from the conversion space into the vaporization space is possible.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: September 4, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Bender, Signe Unverricht
  • Publication number: 20070032680
    Abstract: In a process for the heterogeneously catalyzed gas-phase partial oxidation of precursor compounds of (meth)acrylic acid over a fixed catalyst bed which contains, as a catalyst, a mixed oxide active material shaped into a geometric body, the geometric body is a geometric base body into whose surface a cavity has been introduced.
    Type: Application
    Filed: May 31, 2006
    Publication date: February 8, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Raimund Felder, Signe Unverricht, Heiko Arnold, Jochen Petzoldt
  • Patent number: 7129195
    Abstract: The invention relates to a method for the heterogenically catalyed gas-phase partial oxidation of precursor compounds of (meth)acrylic acid in a fixed catalyst bed, containing as the catalyst an activated mass of mixed oxide, shaped to form a geometric body. Said geometric body is a geometric base body, into whose surface a cavity is incorporated.
    Type: Grant
    Filed: January 12, 2002
    Date of Patent: October 31, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Raimund Felder, Signe Unverricht, Heiko Arnold, Jochen Petzoldt
  • Patent number: 7126033
    Abstract: The present invention relates to a process for isomerizing reactant allyl alcohols to product allyl alcohols in the presence of a catalyst, wherein the reactant allyl alcohol is rearranged to product allyl alcohol in semicontinuous or continuous mode in a catalyst-containing suitable reactor. In particular, the process according to the invention is used to prepare linalool from Geraniol and/or nerol.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: October 24, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Frank Haese, Klaus Ebel, Kirsten Burkart, Signe Unverricht, Peter Münster
  • Patent number: 7122707
    Abstract: Coated catalysts which are suitable for the gas-phase catalytic oxidation of propene to acrolein are prepared by a process in which rings are used as supports and water is used as a binder.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: October 17, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Jochen Petzoldt, Signe Unverricht, Heiko Arnold
  • Patent number: 7101824
    Abstract: The present invention relates to a process for the preparation of iron-doped ruthenium catalysts supported on carbon, and their use for the selective liquid phase hydrogenation of carbonyl compounds to give the corresponding alcohols, in particular for the hydrogenation of citral to give geraniol or nerol or of citronellal to give citronellol.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: September 5, 2006
    Assignee: BASF Aktiengellsellschaft
    Inventors: Till Gerlach, Hans-Georg Göbbel, Frank Funke, Klaus Ebel, Ekkehard Schwab, Signe Unverricht, Reinhard Körner, Lisa Lobree
  • Patent number: 7015354
    Abstract: A process for preparing (meth)acrolein and/or (meth)acrylic acid by heterogeneously catalyzed gas phase partial oxidation of an organic precursor compound over a fresh fixed catalyst bed, in which the process is started up at a reduced hourly space velocity of charging gas mixture on the fixed catalyst bed.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: March 21, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Jochen Petzoldt, Signe Unverricht, Heiko Arnold, Klaus Joachim Müller-Engel, Martin Dieterle
  • Patent number: 7005554
    Abstract: A process is described for selectively hydrogenating citronellal to citronellol in which a liquid phase, in which the citronellal is dissolved and particles of a catalyst are suspended which is capable of preferentially hydrogenating carbon-oxygen double bonds over carbon—carbon double bonds, is conducted through a device which inhibits the transport of the catalyst particles in the presence of a hydrogen-containing gas.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: February 28, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Georg Göbbel, Till Gerlach, Günter Wegner, Hartwig Fuchs, Signe Unverricht, Axel Salden
  • Patent number: 6998504
    Abstract: A process for the catalytic gas-phase oxidation of propene to acrylic acid, in which the reaction gas starting mixture is oxidized, with a high propene loading, in a first reaction stage, over a first fixed-bed catalyst which is housed in two successive reaction zones A, B, the reaction zone B being kept at a higher temperature than the reaction zone A, and the acrolein-containing product gas mixture of the first reaction stage is then oxidized in a second reaction stage, with a high acrolein loading, over a second fixed-bed catalyst which is housed in two successive reaction zones C, D, the reaction zone D being kept at a higher temperature than the reaction zone C.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: February 14, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Signe Unverricht, Heiko Arnold, Andreas Tenten, Ulrich Hammon, Hans-Peter Neumann, Klaus Harth