Patents by Inventor Horst-Werner Zanthoff
Horst-Werner Zanthoff 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: 20230271904Abstract: The present invention relates to a process for producing alcohols by hydrogenation of C9 aldehydes. The process according to the invention is performed in two consecutive hydrogenation stages, wherein the first hydrogenation stage employs an activated metal catalyst based on a nickel metal foam and the second stage employs a supported catalyst containing a catalytically active component from the group consisting of nickel, copper, chromium and mixtures thereof.Type: ApplicationFiled: February 24, 2023Publication date: August 31, 2023Applicant: Evonik Operations GmbHInventors: Robert FRANKE, Meike ROOS, Horst-Werner ZANTHOFF, Julia BAUER, Christoph WEBER, Andrea HEINROTH, Jan Benedikt METTERNICH
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Publication number: 20230271902Abstract: The present invention relates to a process for producing alcohols by hydrogenation of C13 aldehydes. The process according to the invention is performed in two consecutive hydrogenation stages, wherein the first hydrogenation stage employs an activated metal catalyst based on a nickel metal foam and the second stage employs a supported catalyst containing a catalytically active component from the group consisting of nickel, copper, chromium and mixtures thereof.Type: ApplicationFiled: February 23, 2023Publication date: August 31, 2023Applicant: Evonik Operations GmbHInventors: Robert FRANKE, Meike ROOS, Horst-Werner ZANTHOFF, Julia BAUER, Christoph WEBER, Andrea HEINROTH, Jan Benedikt METTERNICH
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Publication number: 20230271903Abstract: The present invention relates to a process for producing alcohols by hydrogenation of C4 to C20 aldehydes. The process according to the invention is performed in two consecutive hydrogenation stages, wherein the first hydrogenation stage employs an activated metal catalyst based on a nickel metal foam and the second stage employs a supported catalyst containing a catalytically active component from the group consisting of nickel, copper, chromium and mixtures thereof.Type: ApplicationFiled: February 24, 2023Publication date: August 31, 2023Applicant: Evonik Operations GmbHInventors: Robert FRANKE, Meike ROOS, Horst-Werner ZANTHOFF, Julia BAUER, Christoph WEBER, Andrea HEINROTH, Jan Benedikt METTERNICH
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Publication number: 20230092962Abstract: A process for ring hydrogenation of dialkyl terephthalates having C3- to C16-alkyl groups can be performed in a hydrogenation unit composed of two reaction units in series. In the process, a suitable process parameter in relation to the first reaction unit is adjusted so that a certain reaction conversion is achieved.Type: ApplicationFiled: September 13, 2022Publication date: March 23, 2023Applicant: Evonik Operations GmbHInventors: Horst-Werner Zanthoff, Julia Bauer, Michael Grass, Thomas Schneider
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Publication number: 20220380276Abstract: A method for the isomerization of alpha-olefins to the corresponding internal olefins uses a heterogenous catalyst containing silicon-aluminum mixed oxide in a continuous fixed-bed operation mode.Type: ApplicationFiled: November 4, 2020Publication date: December 1, 2022Applicant: Evonik Operations GmbHInventors: Jens ELSNER, Horst-Werner Zanthoff, Fikri Sen
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Patent number: 11174207Abstract: A process is useful for the isomerization of C4 to C9 olefins having an internal double bond into the corresponding olefins having a terminal double bond using a heterogeneous catalyst system of a silicon-aluminium mixed oxide composition.Type: GrantFiled: November 11, 2020Date of Patent: November 16, 2021Assignee: Evonik Operations GmbHInventors: Frank Geilen, Felix Gärtner, Horst-Werner Zanthoff, Guido Stochniol
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Publication number: 20210147320Abstract: A process is useful for the isomerization of C4 to C9 olefins having an internal double bond into the corresponding olefins having a terminal double bond using a heterogeneous catalyst system of a silicon-aluminium mixed oxide composition.Type: ApplicationFiled: November 11, 2020Publication date: May 20, 2021Applicant: Evonik Operations GmbHInventors: Frank Geilen, Felix Gärtner, Horst-Werner Zanthoff, Guido Stochniol
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Patent number: 10407366Abstract: A process for the combined preparation of a butene and an octene from ethene, proceeds by: a) providing a solvent having a boiling point or boiling range above the boiling points of the butenes and below the boiling points of the octenes and wherein the solvent is an inert solvent or is hexene alone or is hexene admixed with pentane or hexane or heptane or is a mixture of pentane, hexane, and heptane; b) providing a first feed mixture containing at least the solvent and ethene dissolved therein; c) providing a second feed mixture containing at least hexene, the solvent and also ethene dissolved in the solvent and/or in the hexene; d) transferring the first feed mixture into a first synthesis and the second feed mixture into a second synthesis, wherein the first and second syntheses are physically separated from one another; e) oligomerizing of at least part of the ethene present in the first feed mixture in the presence of a first heterogeneous catalyst and in the presence of the solvent in the first synthesiType: GrantFiled: January 19, 2016Date of Patent: September 10, 2019Assignee: Evonik Degussa GmbHInventors: Guido Stochniol, Helene Reeker, Stephan Peitz, Dietrich Maschmeyer, Joerg Schallenberg, Horst-Werner Zanthoff, Harald Haeger
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Publication number: 20180208538Abstract: The invention relates to a process for preparing an ester mixture, in which an n-butene-containing feed mixture having a composition which changes over time is first oligomerized and then converted by hydroformylation, hydrogenation and esterification to an ester mixture. In this process, an approximation of the actual viscosity of the ester mixture is determined. The problem that it addresses is that of specifying a comparatively simple process which enables conversion of an n-butene with a variable composition over time to an ester mixture having a viscosity which can be kept very substantially constant over a long period even when an inconstant C4 source which delivers fluctuating qualities over this period is utilized. This is achieved through controlled use of a second raw material, namely ethene. It has been found that the viscosity of n-butene-based ester mixtures can be influenced by controlled use of ethene in the preparation of the ester precursors.Type: ApplicationFiled: March 19, 2018Publication date: July 26, 2018Inventors: Helene Reeker, Guido Stochniol, Dietrich Maschmeyer, Horst-Werner Zanthoff, Jörg Schallenberg, Frank Geilen, Katrin Marie Dyballa, Dirk Fridag, Stephan Peitz, Lena Altmann, Robert Franke
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Patent number: 10006130Abstract: The invention relates to a photoelectrochemical cell 100 for light-driven production of hydrogen and oxygen, especially from water or another electrolyte based on aqueous solution, having a photoelectric layer structure 1 and an electrochemical layer structure 2 in a layer construction 40, where—the photoelectric layer structure 1 for absorption of light 3 uninfluenced by the electrolyte 10 forms a front side 41 of the layer structure 40, and—the electrochemical layer structure 2, for accommodation of the electrolyte 10, forms a reverse side 42 of the layer construction 40, and—a conductive and corrosion-inhibiting coupling layer 13 forms electrical contact between the photoelectric layer structure 1 and the electrochemical layer structure 2 in the layer construction 40, where—the electrochemical layer structure 2 has an electrode structure of a front electrode 21 and an electrode structure of a rear electrode 22, between which is arranged an ion exchange layer 61 such that an integrated layer construction 40Type: GrantFiled: March 15, 2013Date of Patent: June 26, 2018Assignee: Evonik Degussa GmbHInventors: Sascha Hoch, Matthias Blug, Jens Busse, Wolfram Calvet, Bernhard Kaiser, Wolfram Jaegermann, Hanna Hahn, Horst-Werner Zanthoff
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Patent number: 10000440Abstract: The invention relates to a process for preparing an ester mixture, in which an n-butene-containing feed mixture having a composition which changes over time is first oligomerized and then converted by hydroformylation, hydrogenation and esterification to an ester mixture. In this process, an approximation of the actual viscosity of the ester mixture is determined. The problem that it addresses is that of specifying a comparatively simple process which enables conversion of an n-butene with a variable composition over time to an ester mixture having a viscosity which can be kept very substantially constant over a long period even when an inconstant C4 source which delivers fluctuating qualities over this period is utilized. This is achieved through controlled use of a second raw material, namely ethene. It has been found that the viscosity of n-butene-based ester mixtures can be influenced by controlled use of ethene in the preparation of the ester precursors.Type: GrantFiled: November 18, 2016Date of Patent: June 19, 2018Assignee: Evonik Degussa GmbHInventors: Helene Reeker, Guido Stochniol, Dietrich Maschmeyer, Horst-Werner Zanthoff, Jörg Schallenberg, Frank Geilen, Katrin Marie Dyballa, Dirk Fridag, Stephan Peitz, Lena Altmann, Robert Franke
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Patent number: 9845276Abstract: The invention is concerned with the issue of how to produce n-pentanal by hydroformylation from feedstock mixtures comprising a small proportion of n-butene and a large proportion of n-butane. Specifically, solutions for further optimizing established processes for hydroformylation of such low-butene mixtures in terms of material utilization are sought. The present invention has for its object to enhance the material utilization of the feedstock mixture in the production of n-pentanal from feedstock mixtures having a small proportion of n-butene and a large proportion of n-butane. The process shall be capable of economic operation on an industrial scale. In particular an existing oxo plant shall be honed to achieve better raw material utilization.Type: GrantFiled: April 19, 2017Date of Patent: December 19, 2017Assignee: Evonik Degussa GmbHInventors: Robert Franke, Lena Altmann, Corinna Hecht, Benedikt Dercks, Hanna Spohr, Horst-Werner Zanthoff
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Publication number: 20170334822Abstract: The invention is concerned with the issue of how to produce n-pentanal by hydroformylation from feedstock mixtures comprising a small proportion of n-butene and a large proportion of n-butane. Specifically, solutions for further optimizing established processes for hydroformylation of such low-butene mixtures in terms of material utilization are sought. The present invention has for its object to enhance the material utilization of the feedstock mixture in the production of n-pentanal from feedstock mixtures having a small proportion of n-butene and a large proportion of n-butane. The process shall be capable of economic operation on an industrial scale. In particular an existing oxo plant shall be honed to achieve better raw material utilization.Type: ApplicationFiled: April 19, 2017Publication date: November 23, 2017Inventors: Robert Franke, Lena Altmann, Corinna Hecht, Benedikt Dercks, Hanna Spohr, Horst-Werner Zanthoff
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Publication number: 20170144959Abstract: The invention relates to a process for preparing an ester mixture, in which an n-butene-containing feed mixture having a composition which changes over time is first oligomerized and then converted by hydroformylation, hydrogenation and esterification to an ester mixture. In this process, an approximation of the actual viscosity of the ester mixture is determined. The problem that it addresses is that of specifying a comparatively simple process which enables conversion of an n-butene with a variable composition over time to an ester mixture having a viscosity which can be kept very substantially constant over a long period even when an inconstant C4 source which delivers fluctuating qualities over this period is utilized. This is achieved through controlled use of a second raw material, namely ethene. It has been found that the viscosity of n-butene-based ester mixtures can be influenced by controlled use of ethene in the preparation of the ester precursors.Type: ApplicationFiled: November 18, 2016Publication date: May 25, 2017Inventors: Helene Reeker, Guido Stochniol, Dietrich Maschmeyer, Horst-Werner Zanthoff, Jörg Schallenberg, Frank Geilen, Katrin Marie Dyballa, Dirk Fridag, Stephan Peitz, Lena Altmann, Robert Franke
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Publication number: 20160318829Abstract: The invention relates to a process for preparing 1,3-butadiene by heterogeneously catalysed oxidative dehydrogenation of n-butene, in which a butene mixture comprising at least 2-butene is provided. The problem that it addresses is that of specifying a process for economically viable preparation of 1,3-butadiene on the industrial scale, which is provided with a butene mixture as raw material, wherein the 1-butene content is comparatively low compared to the 2-butene content thereof, and in which the ratio of 1-butene to 2-butene is subject to variation. This problem is solved by a two-stage process in which, in a first stage, the butene mixture provided is subjected to a heterogeneously catalysed isomerization to obtain an at least partly isomerized butene mixture, and in which the at least partly isomerized butene mixture obtained in the first stage is then subjected, in a second stage, to oxidative dehydrogenation. The two-stage process leads to higher butadiene yields compared to the one-stage process.Type: ApplicationFiled: December 4, 2014Publication date: November 3, 2016Applicant: Evonik Degussa GmbHInventors: Felix GAERTNER, Guido STOCHNIOL, Joerg SCHALLENBERG, Horst-Werner ZANTHOFF, Oliver Markus BUSCH, Stephan PEITZ, Frank GEILEN, Arne REINSDORF, Natalya PRODAN
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Publication number: 20160207848Abstract: A process for the combined preparation of a butene and an octene from ethene, proceeds by: a) providing a solvent having a boiling point or boiling range above the boiling points of the butenes and below the boiling points of the octenes and wherein the solvent is an inert solvent or is hexene alone or is hexene admixed with pentane or hexane or heptane or is a mixture of pentane, hexane, and heptane; b) providing a first feed mixture containing at least the solvent and ethene dissolved therein; c) providing a second feed mixture containing at least hexene, the solvent and also ethene dissolved in the solvent and/or in the hexene; d) transferring the first feed mixture into a first synthesis and the second feed mixture into a second synthesis, wherein the first and second syntheses are physically separated from one another; e) oligomerising of at least part of the ethene present in the first feed mixture in the presence of a first heterogeneous catalyst and in the presence of the solvent in the first synthesiType: ApplicationFiled: January 19, 2016Publication date: July 21, 2016Applicant: Evonik Degussa GmbHInventors: Guido STOCHNIOL, Helene REEKER, Stephan PEITZ, Dietrich MASCHMEYER, Joerg SCHALLENBERG, Horst-Werner ZANTHOFF, Harald HAEGER
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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: 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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Publication number: 20150068915Abstract: The invention relates to a photoelectrochemical cell 100 for light-driven production of hydrogen and oxygen, especially from water or another electrolyte based on aqueous solution, having a photoelectric layer structure 1 and an electrochemical layer structure 2 in a layer construction 40, where—the photoelectric layer structure 1 for absorption of light 3 uninfluenced by the electrolyte 10 forms a front side 41 of the layer structure 40, and—the electrochemical layer structure 2, for accommodation of the electrolyte 10, forms a reverse side 42 of the layer construction 40, and—a conductive and corrosion-inhibiting coupling layer 13 forms electrical contact between the photoelectric layer structure 1 and the electrochemical layer structure 2 in the layer construction 40, where—the electrochemical layer structure 2 has an electrode structure of a front electrode 21 and an electrode structure of a rear electrode 22, between which is arranged an ion exchange layer 61 such that an integrated layer construction 40Type: ApplicationFiled: March 15, 2013Publication date: March 12, 2015Applicant: EVONIK INDUSTRIES AGInventors: Sascha Hoch, Matthias Blug, Jens Busse, Wolfram Calvet, Bernhard Kaiser, Wolfram Jaegermann, Hanna Hahn, Horst-Werner Zanthoff