Patents by Inventor Pallassana S. Venkataraman
Pallassana S. Venkataraman 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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Patent number: 9663728Abstract: The present invention relates to the processing of hydrocarbon-containing feedstreams in the presence of an interstitial metal hydride comprised of at least one chemical element selected from Groups 3-11 (including the lanthanides, atomic numbers 58 to 71), and at least one chemical element selected from Groups 13-15 from the IUPAC Periodic Table of Elements. These interstitial metal hydrides, their catalysts and processes using these interstitial metal hydrides and catalysts of the present invention improve overall hydrogenation, product conversion, as well as sulfur reduction in hydrocarbon feedstreams.Type: GrantFiled: October 28, 2014Date of Patent: May 30, 2017Assignee: EXXONMOBILE RESEARCH AND ENGINEERING COMPANYInventors: Pallassana S. Venkataraman, Gordon F. Stuntz, Jonathan Martin McConnachie, Faiz Pourarian
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Patent number: 9217735Abstract: The present invention provides a method for selecting an improved catalyst composition comprising a crystalline molecular sieve material having a structure and properties whereby the catalyst composition has at least one active catalytic site with a Mono Alkylation Selectivity Factor (MASF) greater than or equal to 0 kcal/mol±0.5 kcal/mol, and optionally further at least one active catalytic site with an Olefin Oligomerization Suppression Factor (OOSF) greater than or equal to 5 kcal/mol±0.5 kcal/mol. Further, there is provided an improved process for conversion of hydrocarbon feedstock in the presence of said selected catalyst composition.Type: GrantFiled: August 4, 2011Date of Patent: December 22, 2015Assignee: ExxonMobil Chemical Patents Inc.Inventors: Yogesh V. Joshi, Pallassana S. Venkataraman, Terry E. Helton, Charles M. Smith, Jose G. Santiesteban, Matthew J. Vincent
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Publication number: 20150045600Abstract: The present invention relates to the processing of hydrocarbon-containing feedstreams in the presence of an interstitial metal hydride comprised of at least one chemical element selected from Groups 3-11 (including the lanthanides, atomic numbers 58 to 71), and at least one chemical element selected from Groups 13-15 from the IUPAC Periodic Table of Elements. These interstitial metal hydrides, their catalysts and processes using these interstitial metal hydrides and catalysts of the present invention improve overall hydrogenation, product conversion, as well as sulfur reduction in hydrocarbon feedstreams.Type: ApplicationFiled: October 28, 2014Publication date: February 12, 2015Applicant: ExxonMobil Research and Engineering CompanyInventors: Pallassana S. Venkataraman, Gordon F. Stuntz, Jonathan Martin McConnachie, Faiz Pourarian
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Patent number: 8722563Abstract: Described herein is a catalyst precursor composition comprising at least one metal from Group 6 of the Periodic Table of the Elements, at least one metal from Groups 8-10 of the Periodic Table of the Elements, and a reaction product formed from (i) a first organic compound containing at least one amine group, and (ii) a second organic compound separate from said first organic compound and containing at least one carboxylic acid group. A process for preparing the catalyst precursor composition is also described, as is sulfiding the bulk mixed metal oxide catalyst precursor composition to form a hydroprocessing catalyst.Type: GrantFiled: June 1, 2011Date of Patent: May 13, 2014Assignee: ExxonMobil Research and Engineering CompanyInventors: Stuart L. Soled, Sabato Miseo, Joseph E. Baumgartner, Iulian Nistor, Pallassana S. Venkataraman, Chris E. Kliewer, Robert J. Chimenti, Javier Guzman, Gordon Kennedy, Doron Levin
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Patent number: 8722564Abstract: Described herein is a catalyst precursor composition comprising at least one metal from Group 6 of the Periodic Table of the Elements, at least one metal from Groups 8-10 of the Periodic Table of the Elements, and a reaction product formed from (i) a first organic compound containing at least one amine group and at least 10 carbon atoms or (ii) a second organic compound containing at least one carboxylic acid group and at least 10 carbon atoms, but not both, wherein the reaction product contains additional unsaturated carbon atoms, relative to the first or second organic compound, wherein the metals of the catalyst precursor composition are arranged in a crystal lattice, and wherein the reaction product is not located within the crystal lattice. A process for preparing the catalyst precursor composition is also described, as is sulfiding the catalyst precursor composition to form a hydroprocessing catalyst.Type: GrantFiled: June 1, 2011Date of Patent: May 13, 2014Assignee: ExxonMobil Research and Engineering CompanyInventors: Stuart L. Soled, Sabato Miseo, Joseph E. Baumgartner, Iulian Nistor, Pallassana S. Venkataraman, Chris E. Kliewer, Robert J. Chimenti, Javier Guzman, Gordon Kennedy, Doron Levin
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Publication number: 20130253246Abstract: The present invention provides a method for selecting an improved catalyst composition comprising a crystalline molecular sieve material having a structure and properties whereby the catalyst composition has at least one active catalytic site with a Mono Alkylation Selectivity Factor (MASF) greater than or equal to 0 kcal/mol±0.5 kcal/mol, and optionally further at least one active catalytic site with an Olefin Oligomerization Suppression Factor (OOSF) greater than or equal to 5 kcal/mol±0.5 kcal/mol. Further, there is provided an improved process for conversion of hydrocarbon feedstock in the presence of said selected catalyst composition.Type: ApplicationFiled: August 4, 2011Publication date: September 26, 2013Applicant: ExxonMobil Chemical Patents Inc.Inventors: Yogesh V. Joshi, Pallassana S. Venkataraman, Terry E. Helton, Charles M. Smith, Jose G. Santiesteban, Matthew J. Vincent
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Publication number: 20110294657Abstract: Described herein is a catalyst precursor composition comprising at least one metal from Group 6 of the Periodic Table of the Elements, at least one metal from Groups 8-10 of the Periodic Table of the Elements, and a reaction product formed from (i) a first organic compound containing at least one amine group and at least 10 carbon atoms or (ii) a second organic compound containing at least one carboxylic acid group and at least 10 carbon atoms, but not both, wherein the reaction product contains additional unsaturated carbon atoms, relative to the first or second organic compound, wherein the metals of the catalyst precursor composition are arranged in a crystal lattice, and wherein the reaction product is not located within the crystal lattice. A process for preparing the catalyst precursor composition is also described, as is sulfiding the catalyst precursor composition to form a hydroprocessing catalyst.Type: ApplicationFiled: June 1, 2011Publication date: December 1, 2011Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Stuart L. Soled, Sabato Miseo, Joseph E. Baumgartner, Iulian Nistor, Pallassana S. Venkataraman, Chris E. Kliewer, Robert J. Chimenti, Javier Guzman, Gordon Kennedy, Doron Levin
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Publication number: 20110294656Abstract: Described herein is a catalyst precursor composition comprising at least one metal from Group 6 of the Periodic Table of the Elements, at least one metal from Groups 8-10 of the Periodic Table of the Elements, and a reaction product formed from (i) a first organic compound containing at least one amine group, and (ii) a second organic compound separate from said first organic compound and containing at least one carboxylic acid group. A process for preparing the catalyst precursor composition is also described, as is sulfiding the bulk mixed metal oxide catalyst precursor composition to form a hydroprocessing catalyst.Type: ApplicationFiled: June 1, 2011Publication date: December 1, 2011Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Stuart L. Soled, Sabato Miseo, Joseph E. Baumgartner, Iulian Nistor, Pallassana S. Venkataraman, Chris E. Kliewer, Robert J. Chimenti, Javier Guzman, Gordon Kennedy, Doron Levin
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Patent number: 7951746Abstract: Bulk metallic catalysts comprised of a Group VIII metal and a Group VIB metal and methods for synthesizing bulk metallic catalysts are provided. The catalysts are prepared by a method wherein precursors of both metals are mixed and interacted with at least one organic acid, such as glyoxylic acid, dried, calcined, and sulfided. The catalysts are used for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.Type: GrantFiled: October 9, 2007Date of Patent: May 31, 2011Assignee: ExxonMobil Research and Engineering CompanyInventors: Chuansheng Bai, El-Mekki El-Malki, Jeff Elks, Zhiguo Hou, Jon M. McConnachie, Pallassana S. Venkataraman, Jason Wu, Jun Han, Daniel Giaquinta, Alfred Hagemeyer, Valery Sokolovskii, Anthony F. Volpe, Jr., David Michael Lowe
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Publication number: 20110119990Abstract: The present invention relates to the processing of hydrocarbon-containing feedstreams in the presence of an interstitial metal hydride comprised of at least one chemical element selected from Groups 3-11 (including the lanthanides, atomic numbers 58 to 71), and at least one chemical element selected from Groups 13-15 from the IUPAC Periodic Table of Elements. These interstitial metal hydrides, their catalysts and processes using these interstitial metal hydrides and catalysts of the present invention improve overall hydrogenation, product conversion, as well as sulfur reduction in hydrocarbon feedstreams.Type: ApplicationFiled: November 17, 2010Publication date: May 26, 2011Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANHYInventors: Pallassana S. Venkataraman, Gordon F. Stuntz, Jonathan M. McConnachie, Faiz Pourarian
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Patent number: 7615509Abstract: Supported metallic catalysts comprised of a Group VIII metal, a Group VIB metal, and an organic additive, and methods for synthesizing supported metallic catalysts are provided. The catalysts are prepared by a method wherein precursors of both metals are mixed and interacted with at least one organic additive, dried, calcined, and sulfided. The catalysts are used for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.Type: GrantFiled: October 11, 2007Date of Patent: November 10, 2009Assignee: ExxonMobil Research and Engineering CompanyInventors: Chuansheng Bai, EL-Mekki El-Malki, Jeff Elks, Zhiguo Hou, Jon M. McConnachie, Pallassana S. Venkataraman, Jason Wu, Peter W. Jacobs, Jun Han, Daniel M. Giaquinta, Alfred Hagemeyer, Valery Sokolovskii, Anthony F. Volpe, Jr., David M. Lowe
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Publication number: 20080146438Abstract: Supported metallic catalysts comprised of a Group VIII metal, a Group VIB metal, and an organic additive, and methods for synthesizing supported metallic catalysts are provided. The catalysts are prepared by a method wherein precursors of both metals are mixed and interacted with at least one organic additive, dried, calcined, and sulfided. The catalysts are used for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.Type: ApplicationFiled: October 11, 2007Publication date: June 19, 2008Inventors: Chuangsheng Bai, EL-Mekki El-Malki, Jeff Elks, Zhiguo Hou, Jon M. McConnachie, Pallassana S. Venkataraman, Jason Wu, Peter W. Jacobs, Jun Han, Daniel M. Giaquinta, Alfred Hagemeyer, Valery Sokolovskii, Anthony F. Volpe, David M. Lowe
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Publication number: 20080132407Abstract: Bulk metallic catalysts comprised of a Group VIII metal and a Group VIB metal and methods for synthesizing bulk metallic catalysts are provided. The catalysts are prepared by a method wherein precursors of both metals are mixed and interacted with at least one organic acid, such as glyoxylic acid, dried, calcined, and sulfided. The catalysts are used for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.Type: ApplicationFiled: October 9, 2007Publication date: June 5, 2008Inventors: Chuansheng Bai, El-Mekki El-Malki, Jeff Elks, Zhiguo Hou, Jon M. McConnachie, Pallassana S. Venkataraman, Jason Wu, Jun Han, Daniel Giaquinta, Alfred Hagemeyer, Valery Sokolovskii, Anthony F. Volpe, David Michael Lowe