Patents by Inventor Thomas Quandt
Thomas Quandt 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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Publication number: 20230173467Abstract: A process for producing an oligomerization catalyst includes hydrothermal treatment. An oligomerization catalyst produced by the process is useful for the oligomerization of C2 to C12 olefins.Type: ApplicationFiled: December 7, 2022Publication date: June 8, 2023Applicant: Evonik Operations GmbHInventors: Johannes KNOSSALLA, Thomas Quandt, Robert Franke
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Patent number: 11253844Abstract: The invention relates to an oligomerization catalyst comprising nickel oxide and silica-alumina support material and to a process for oligomerization of C3- to C6-olefins using the oligomerization catalyst.Type: GrantFiled: March 6, 2019Date of Patent: February 22, 2022Assignee: Evonik Operations GmbHInventors: Fabian Nadolny, Stephan Peitz, Guido Stochniol, Robert Franke, Thomas Quandt
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Patent number: 11186782Abstract: The invention relates to a catalyst for a process for removing mercaptans and optionally disulfides (if present) from hydrocarbon streams, in particular C4 streams, in the presence of higher dienes, in particular C5 dienes. At the same time, the invention also relates to a process for removing mercaptans and disulfides (if present) from hydrocarbon streams, in particular C4 streams, in one embodiment in the presence of 1-butene, by thioetherification of the mercaptans with polyunsaturated hydrocarbons, wherein the process is carried out in a reactor with addition of hydrogen in the presence of higher dienes, in particular C5 dienes.Type: GrantFiled: December 20, 2019Date of Patent: November 30, 2021Assignee: Evonik Operations GmbHInventors: Stephan Peitz, Helene Reeker, Reiner Bukohl, Thomas Quandt, Stefan Röder, Armin Matthias Rix, Andreas Wolff, Guido Stochniol
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Patent number: 10882027Abstract: The invention relates to a process for producing an oligomerization catalyst comprising nickel oxide and a silicon-alumina support material, wherein the silica-alumina support material is in the ammonium form. The present invention further relates to a process for oligomerization of C3- to C6-olefins using the oligomerization catalyst produced according to the invention.Type: GrantFiled: March 6, 2019Date of Patent: January 5, 2021Assignee: Evonik Operations GmbHInventors: Fabian Nadolny, Stephan Peitz, Guido Stochniol, Robert Franke, Thomas Quandt
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Patent number: 10850261Abstract: The invention relates to an oligomerization catalyst comprising nickel oxide and silica-alumina support material and to a process for oligomerization of C3- to C6-olefins using the oligomerization catalyst.Type: GrantFiled: March 4, 2019Date of Patent: December 1, 2020Assignee: Evonik Operations GmbHInventors: Fabian Nadolny, Stephan Peitz, Guido Stochniol, Helene Reeker, Angela Heykamp, Reiner Bukohl, Robert Franke, Thomas Quandt
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Publication number: 20200216763Abstract: The invention relates to a catalyst for a process for removing mercaptans and optionally disulfides (if present) from hydrocarbon streams, in particular C4 streams, in the presence of higher dienes, in particular C5 dienes. At the same time, the invention also relates to a process for removing mercaptans and disulfides (if present) from hydrocarbon streams, in particular C4 streams, in one embodiment in the presence of 1-butene, by thioetherification of the mercaptans with polyunsaturated hydrocarbons, wherein the process is carried out in a reactor with addition of hydrogen in the presence of higher dienes, in particular C5 dienes.Type: ApplicationFiled: December 20, 2019Publication date: July 9, 2020Applicant: Evonik Operations GmbHInventors: Stephan Peitz, Helene Reeker, Reiner Bukohl, Thomas Quandt, Stefan Röder, Armin Matthias Rix, Andreas Wolff, Guido Stochniol
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Publication number: 20190283003Abstract: The invention relates to an oligomerization catalyst comprising nickel oxide and silica-alumina support material and to a process for oligomerization of C3- to C6-olefins using the oligomerization catalyst.Type: ApplicationFiled: March 4, 2019Publication date: September 19, 2019Applicant: Evonik Degussa GmbHInventors: Fabian Nadolny, Stephan Peitz, Guido Stochniol, Helene Reeker, Angela Heykamp, Reiner Bukohl, Robert Franke, Thomas Quandt
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Publication number: 20190283004Abstract: The invention relates to an oligomerization catalyst comprising nickel oxide and silica-alumina support material and to a process for oligomerization of C3- to C6-olefins using the oligomerization catalyst.Type: ApplicationFiled: March 6, 2019Publication date: September 19, 2019Applicant: Evonik Degussa GmbHInventors: Fabian Nadolny, Stephan Peitz, Guido Stochniol, Robert Franke, Thomas Quandt
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Publication number: 20190283005Abstract: The invention relates to a process for producing an oligomerization catalyst comprising nickel oxide and a silicon-alumina support material, wherein the silica-alumina support material is in the ammonium form. The present invention further relates to a process for oligomerization of C3- to C6-olefins using the oligomerization catalyst produced according to the invention.Type: ApplicationFiled: March 6, 2019Publication date: September 19, 2019Applicant: Evonik Degussa GmbHInventors: Fabian Nadolny, Stephan Peitz, Guido Stochniol, Robert Franke, Thomas Quandt
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Patent number: 10245578Abstract: The invention is concerned with catalysts for heterogeneous hydrogenation of oxo process aldehydes. The problem addressed by the invention is that of developing a catalyst containing neither chromium nor nickel. In addition, it is to enable the economically viable hydrogenation of aldehyde mixtures originating from industrial oxo processes on the industrial scale. For this purpose, the catalyst should not be reliant on costly precious metals such as Ru, Pd or Pt. This problem was solved by omitting the chromium and nickel in the preparation of a conventional Cu/Ni/Cr system, such that a catalyst wherein only copper occurs as hydrogenation-active component on the support material thereof, and not chromium or nickel, is obtained. What is surprising here is that a functioning catalyst for the purpose intended still arises at all even though two of three hydrogenation-active metals are omitted.Type: GrantFiled: October 23, 2017Date of Patent: April 2, 2019Assignee: EVONIK DEGUSSA GMBHInventors: Florian Klasovsky, Robert Franke, Frank Geilen, Andreas Jess, Wolfgang Korth, Thomas Quandt, Arne Reinsdorf
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Publication number: 20180126361Abstract: The invention is concerned with catalysts for heterogeneous hydrogenation of oxo process aldehydes. The problem addressed by the invention is that of developing a catalyst containing neither chromium nor nickel. In addition, it is to enable the economically viable hydrogenation of aldehyde mixtures originating from industrial oxo processes on the industrial scale. For this purpose, the catalyst should not be reliant on costly precious metals such as Ru, Pd or Pt. This problem was solved by omitting the chromium and nickel in the preparation of a conventional Cu/Ni/Cr system, such that a catalyst wherein only copper occurs as hydrogenation-active component on the support material thereof, and not chromium or nickel, is obtained. What is surprising here is that a functioning catalyst for the purpose intended still arises at all even though two of three hydrogenation-active metals are omitted.Type: ApplicationFiled: October 23, 2017Publication date: May 10, 2018Inventors: Florian Klasovsky, Robert Franke, Frank Geilen, Andreas Jess, Wolfgang Korth, Thomas Quandt, Arne Reinsdorf
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Patent number: 9637436Abstract: A catalyst composition is useful for producing a ketone from a compound containing at least one epoxide group, and the catalyst composition contains at least one precious metal; and at least one mixed oxide; wherein the mixed oxide contains zirconium dioxide and silicon dioxide; wherein the precious metal is supported and the support is not entirely made of the mixed oxide; and wherein a mass ratio of zirconium dioxide to silicon dioxide in the mixed oxide is 86:14 to 99.9:0.1.Type: GrantFiled: October 2, 2015Date of Patent: May 2, 2017Assignee: Evonik Degussa GmbHInventors: Kévin Micoine, Ralf Meier, Jürgen Herwig, Angélique Bétard, Thomas Quandt
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Patent number: 9567276Abstract: The invention relates to a process for the preparation of alcohols by hydrogenation of aldehydes, in which use mixture comprising at least one aldehyde and at least one accompanying component is brought into contact, in the presence of hydrogen, with a heterogeneous catalyst, giving a product mixture which comprises at least the alcohol corresponding to the hydrogenated aldehyde, and at least one by-product, where the catalyst comprises a support material, and nickel and copper applied thereto. The invention also includes a chromium-free catalyst suitable for hydrogenating aldehyde mixtures with different chain lengths, in particular those which originate from different hydroformylations and can also comprise substances with C?C double bonds.Type: GrantFiled: December 22, 2015Date of Patent: February 14, 2017Assignee: Evonik Degussa GmbHInventors: Florian Klasovsky, Robert Franke, Marc Becker, Thomas Quandt, Frank Geilen
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Publication number: 20160176792Abstract: The invention relates to a process for the preparation of alcohols by hydrogenation of aldehydes, in which use mixture comprising at least one aldehyde and at least one accompanying component is brought into contact, in the presence of hydrogen, with a heterogeneous catalyst, giving a product mixture which comprises at least the alcohol corresponding to the hydrogenated aldehyde, and at least one by-product, where the catalyst comprises a support material, and nickel and copper applied thereto. The invention also includes a chromium-free catalyst suitable for hydrogenating aldehyde mixtures with different chain lengths, in particular those which originate from different hydroformylations and can also comprise substances with C?C double bonds.Type: ApplicationFiled: December 22, 2015Publication date: June 23, 2016Applicant: Evonik Degussa GmbHInventors: Florian Klasovsky, Robert Franke, Marc Becker, Thomas Quandt, Frank Geilen
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Patent number: 9371255Abstract: The present invention relates to mixed oxide compositions, to the use thereof as a catalyst for cleavage of alkyl tert-alkyl ethers or tertiary alcohols, and to a process for cleaving alkyl tert-alkyl ethers or tertiary alcohols to isoolefins and alcohol or water.Type: GrantFiled: March 7, 2012Date of Patent: June 21, 2016Assignee: Evonik Degussa GmbHInventors: Markus Winterberg, Christian Böing, Dietrich Maschmeyer, Asli Nau, Horst-Werner Zanthoff, Thomas Quandt, Christian Schulze Isfort
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Publication number: 20160096794Abstract: A catalyst composition is useful for producing a ketone from a compound containing at least one epoxide group, and the catalyst composition contains at least one precious metal; and at least one mixed oxide; wherein the mixed oxide contains zirconium dioxide and silicon dioxide; wherein the precious metal is supported and the support is not entirely made of the mixed oxide; and wherein a mass ratio of zirconium dioxide to silicon dioxide in the mixed oxide is 86:14 to 99.9:0.1.Type: ApplicationFiled: October 2, 2015Publication date: April 7, 2016Applicant: Evonik Degussa GmbHInventors: Kévin Micoine, Ralf Meier, Juergen Herwig, Angélique Bétard, Thomas Quandt
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Patent number: 9289752Abstract: The present invention relates to a catalyst for reacting carbonitriles with water, wherein the catalyst comprises at least 60% by weight of manganese dioxide with an empirical formula MnOx where x is in the range from 1.7 to 2.0, and at least one plasticizer. The present invention further relates to a process for preparing the catalysts detailed above and to a process for preparing carboxamides by reacting carbonitriles with water in the presence of the present catalyst.Type: GrantFiled: February 26, 2009Date of Patent: March 22, 2016Assignee: Evonik Röhm GmbHInventors: Alexander May, Bernd Vogel, Hermann Siegert, Kurt-Alfred Gaudschun, Thomas Quandt
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Publication number: 20150258535Abstract: The process described here has made it possible to obtain boron-containing silicates having a zeolitic structure which display negligible DME and C8 selectivities combined with high activities when used as catalysts for the dissociation of MTBE.Type: ApplicationFiled: September 24, 2013Publication date: September 17, 2015Applicants: Evonik Degussa GmbH, Evonik Industries AGInventors: Asli Nau, Horst-Werner Zanthoff, Frank Geilen, Thomas Quandt, Dietrich Maschmeyer, Markus Winterberg, Stephan Peitz, Reiner Bukohl, Christian Boeing
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Patent number: 8980784Abstract: Silicon-aluminum mixed oxide powder having a weight ratio of (Al2O3/SiO2)ttl in the total primary particle of from 0.003 to 0.05, a weight ratio (Al2O3/SiO2)surface of the primary particles in a surface layer having a thickness of about 5 nm which is less than in the total primary particle and a BET surface area of from 50 to 250 m2/g. It is prepared by igniting one or more silicon compounds selected from the group consisting of CH3SiCl3, (CH3)2SiCl2, (CH3)3SiCl and (n-C3H7)SiCl3, a hydrolysable and oxidizable aluminum compound, at least one fuel gas and air and burning the flame into a reaction chamber, subsequently separating the solid from gaseous materials and subsequently treating the solid with water vapor. The silicon-aluminum mixed oxide powder can be used as catalyst.Type: GrantFiled: February 3, 2012Date of Patent: March 17, 2015Assignee: Evonik Degussa GmbHInventors: Christian Schulze Isfort, Horst-Werner Zanthoff, Thomas Quandt, Christian Boeing
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Patent number: 8709369Abstract: The invention relates to a method for producing higher hydridosilane wherein at least one lower hydridosilane and at least one heterogeneous catalyst are brought to reaction, wherein the at least one catalyst comprises Cu, Ni, Cr and/or Co applied to a carrier and/or oxide of Cu, Ni, Cr and/or Co applied to a carrier, the hydridosilane that can be produced according to said method and use thereof.Type: GrantFiled: August 13, 2010Date of Patent: April 29, 2014Assignee: Evonik Degussa GmbHInventors: Nicole Brausch, Guido Stochniol, Thomas Quandt