Patents by Inventor Robert Raja

Robert Raja 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: 20230062611
    Abstract: A composition comprising: a bulk material; and at least one surface; the bulk material comprising ions of a metal M bonded to one another via linker groups; the surface comprising ions of a metal M? bonded to one another via linker groups; the metals M and M? being the same or different; the surface comprising at least one first site A and at least one second, different site B; the site A having a hydroxyl group bonded thereto; the site B being a Lewis acidic site; is described. Methods of forming the composition and the use of the composition as a catalyst, in particular to catalyse reactions in which CO2 is incorporated into the structure of a molecule, in particular a polymer, are also described.
    Type: Application
    Filed: December 16, 2020
    Publication date: March 2, 2023
    Inventors: Robert RAJA, Daniel STEWART
  • Patent number: 10537884
    Abstract: Methods for producing lactams from oximes by performing a Beckmann rearrangement using a hierarchical porous aluminophosphate catalyst having interconnected microporous and mesoporous networks are provided. Exemplary catalysts include a plurality of weak Brønsted acid active sites, including silicon-containing aluminophosphates having the IZA framework code AFI, such as SAPO-5, CHA, such as SAPO-34, and FAU, such as SAPO-37.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: January 21, 2020
    Assignees: AdvanSix Resins & Chemicals LLC, University of Southampton
    Inventors: Alan B. Levy, Robert Raja, Stephanie H. Newland, Scott R. Keenan, Simon R. Bare
  • Publication number: 20190046963
    Abstract: Methods for producing lactams from oximes by performing a Beckmann rearrangement using a hierarchical porous aluminophosphate catalyst having interconnected microporous and mesoporous networks are provided. Exemplary catalysts include a plurality of weak Brønsted acid active sites, including silicon-containing aluminophosphates having the IZA framework code AFI, such as SAPO-5, CHA, such as SAPO-34, and FAU, such as SAPO-37.
    Type: Application
    Filed: October 16, 2018
    Publication date: February 14, 2019
    Inventors: Alan B. Levy, Robert Raja, Stephanie H. Newland, Scott R. Keenan, Simon R. Bare
  • Publication number: 20180065910
    Abstract: Methods for converting an alcohol, such as cyclohexanol to a ketone, such as cyclohexanone, include reacting the alcohol in the presence of a catalyst and oxygen to produce the ketone. In one exemplary embodiment, the catalyst comprises a microporous copper chloropyrophosphate framework including a plurality of noble metal nanoparticles. In one exemplary embodiment, the noble metal nanoparticles include at least one metal selected from the group consisting of platinum, palladium, and gold.
    Type: Application
    Filed: October 23, 2017
    Publication date: March 8, 2018
    Applicants: AdvanSix Resins & Chemicals LLC
    Inventors: Alan B. Levy, Scott R. Keenan, Robert Raja, Arran M. Gill, Matthew E. Potter, Sivan A. Van Aswegen
  • Patent number: 9822052
    Abstract: Methods for converting an alcohol, such as cyclohexanol to a ketone, such as cyclohexanone, include reacting the alcohol in the presence of a catalyst and oxygen to produce the ketone. In one exemplary embodiment, the catalyst comprises a microporous copper chloropyrophosphate framework including a plurality of noble metal nanoparticles. In one exemplary embodiment, the noble metal nanoparticles include at least one metal selected from the group consisting of platinum, palladium, and gold.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 21, 2017
    Assignees: ADVANSIX RESINS & CHEMICALS LLC, UNIVERSITY OF SOUTHAMPTON
    Inventors: Alan B. Levy, Scott R. Keenan, Robert Raja, Arran M. Gill, Matthew E. Potter, Sivan A. Van Aswegen
  • Patent number: 9662643
    Abstract: Methods for producing lactams from oximes by performing a Beckmann rearrangement using a silicoaluminophosphate catalyst are provided. These catalysts may be used in gas phase or liquid phase reactions to convert oximes into lactams. High conversion of oxime and high selectivity for the desired lactams are produced using the disclosed methods, including high conversion and selectivity for ?-caprolactam produced from cyclohexanone oxime and high conversion and selectivity for ?-laurolactam produced from cyclododecanone oxime.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: May 30, 2017
    Assignees: AdvanSix Resins & Chemical LLC, University of Southampton
    Inventors: Alan B. Levy, Robert Raja, Matthew E. Potter
  • Publication number: 20170096380
    Abstract: Methods for converting an alcohol, such as cyclohexanol to a ketone, such as cyclohexanone, include reacting the alcohol in the presence of a catalyst and oxygen to produce the ketone. In one exemplary embodiment, the catalyst comprises a microporous copper chloropyrophosphate framework including a plurality of noble metal nanoparticles. In one exemplary embodiment, the noble metal nanoparticles include at least one metal selected from the group consisting of platinum, palladium, and gold.
    Type: Application
    Filed: September 29, 2016
    Publication date: April 6, 2017
    Applicant: University of Southampton
    Inventors: Alan B. Levy, Scott R. Keenan, Robert Raja, Arran M. Gill, Matthew E. Potter, Sivan A. Van Aswegen
  • Publication number: 20160279622
    Abstract: Methods for producing lactams from oximes by performing a Beckmann rearrangement using a silicoaluminophosphate catalyst are provided. These catalysts may be used in gas phase or liquid phase reactions to convert oximes into lactams. High conversion of oxime and high selectivity for the desired lactams are produced using the disclosed methods, including high conversion and selectivity for ?-caprolactam produced from cyclohexanone oxime and high conversion and selectivity for ?-laurolactam produced from cyclododecanone oxime.
    Type: Application
    Filed: April 28, 2014
    Publication date: September 29, 2016
    Applicants: Honeywell International Inc., University of Southampton
    Inventors: Alan B. Levy, Robert Raja, Matthew E. Potter
  • Publication number: 20160167030
    Abstract: Methods for producing lactams from oximes by performing a Beckmann rearrangement using a hierarchical porous aluminophosphate catalyst having interconnected microporous and mesoporous networks are provided. Exemplary catalysts include a plurality of weak Brønsted acid active sites, including silicon-containing aluminophosphates having the IZA framework code AFI, such as SAPO-5, CHA, such as SAPO-34, and FAU, such as SAPO-37.
    Type: Application
    Filed: November 30, 2015
    Publication date: June 16, 2016
    Applicant: University of Southampton
    Inventors: Alan B. Levy, Robert Raja, Stephanie H. Newland, Scott R. Keenan, Simon R. Bare
  • Publication number: 20160008798
    Abstract: The disclosure describes a new class of isomorphously metal-substituted aluminophosphate materials with high phase purity that are capable of performing selective Brönsted acid catalyzed chemical transformations, such as transforming alcohols to olefins, with high conversions and selectivities using mild conditions. Isomorphous substitutions of functional metal ions for both the aluminum ions and the phosphorous ions were successful in various AlPO structures, along with multiple metal substitutions into a single aluminum site and/or a phosphorous site. This invention can be used towards the catalytic conversion of hydroxylated compounds of linear and/or branched moiety with the possibility of being substituted to their respective hydrocarbon products, preferably light olefins containing 2 to 10 carbon atoms, among other chemistries.
    Type: Application
    Filed: March 25, 2015
    Publication date: January 14, 2016
    Applicant: SIGNA CHEMISTRY, INC.
    Inventors: Michael LEFENFELD, Robert RAJA, Alexander James PATERSON, Matthew Edward POTTER
  • Patent number: 9221762
    Abstract: Methods for producing lactams from oximes by performing a Beckmann rearrangement using a silicoaluminophosphate catalyst are provided. These catalysts may be used in gas phase or liquid phase reactions to convert oximes into lactams. High conversion of oxime and high selectivity for the desired lactams are produced using the disclosed methods, including high conversion and selectivity for ?-caprolactam produced from cyclohexanone oxime and high conversion and selectivity for ?-laurolactam produced from cyclododecanone oxime.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: December 29, 2015
    Assignees: Honeywell International Inc., University of Southampton
    Inventors: Alan B. Levy, Robert Raja, Matthew E. Potter
  • Publication number: 20150306586
    Abstract: Methods for producing lactams from oximes by performing a Beckmann rearrangement using a silicoaluminophosphate catalyst are provided. These catalysts may be used in gas phase or liquid phase reactions to convert oximes into lactams. High conversion of oxime and high selectivity for the desired lactams are produced using the disclosed methods, including high conversion and selectivity for ?-caprolactam produced from cyclohexanone oxime and high conversion and selectivity for ?-laurolactam produced from cyclododecanone oxime.
    Type: Application
    Filed: April 28, 2014
    Publication date: October 29, 2015
    Applicants: Honeywell International Inc., University of Southampton
    Inventors: Alan B. Levy, Robert Raja, Matthew E. Potter
  • Publication number: 20150126732
    Abstract: Methods for producing lactams from oximes by performing a Beckmann rearrangement using a silicoaluminophosphate catalyst are provided. These catalysts may be used in gas phase or liquid phase reactions to convert oximes into lactams. High conversion of oxime and high selectivity for the desired lactams are produced using the disclosed methods, including high conversion and selectivity for ?-caprolactam produced from cyclohexanone oxime and high conversion and selectivity for ?-laurolactam produced from cyclododecanone oxime.
    Type: Application
    Filed: May 9, 2014
    Publication date: May 7, 2015
    Applicants: Honeywell International Inc., University of Southampton
    Inventors: Alan B. Levy, Robert Raja, Matthew E. Potter
  • Patent number: 9012709
    Abstract: The disclosure describes a new class of isomorphously metal-substituted aluminophosphate materials with high phase purity that are capable of performing selective Brönsted acid catalyzed chemical transformations, such as transforming alcohols to olefins, with high conversions and selectivities using mild conditions. Isomorphous substitutions of functional metal ions for both the aluminum ions and the phosphorous ions were successful in various AlPO structures, along with multiple metal substitutions into a single aluminum site and/or a phosphorous site. This invention can be used towards the catalytic conversion of hydroxylated compounds of linear and/or branched moiety with the possibility of being substituted to their respective hydrocarbon products, preferably light olefins containing 2 to 10 carbon atoms, among other chemistries.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: April 21, 2015
    Assignee: Signa Chemistry, Inc.
    Inventors: Michael Lefenfeld, Robert Raja, Alexander James Paterson, Matthew Edward Potter
  • Publication number: 20140335013
    Abstract: The disclosure describes a new class of isomorphously metal-substituted aluminophosphate materials with high phase purity that are capable of performing selective Brönsted acid catalyzed chemical transformations, such as transforming alcohols to olefins, with high conversions and selectivities using mild conditions. Isomorphous substitutions of functional metal ions for both the aluminum ions and the phosphorous ions were successful in various AlPO structures, along with multiple metal substitutions into a single aluminum site and/or a phosphorous site. This invention can be used towards the catalytic conversion of hydroxylated compounds of linear and/or branched moiety with the possibility of being substituted to their respective hydrocarbon products, preferably light olefins containing 2 to 10 carbon atoms, among other chemistries.
    Type: Application
    Filed: May 12, 2014
    Publication date: November 13, 2014
    Applicant: SIGNA CHEMISTRY, INC.
    Inventors: Michael LEFENFELD, Robert RAJA, Alexander James PATERSON, Michael Edward POTTER
  • Patent number: 8779124
    Abstract: A redox ammoximation process in which a ketone or aldehyde is reacted with ammonia and oxygen in the presence of a catalyst, wherein: the catalyst is an aluminophosphate based redox catalyst having the qualitative general formula (I) M1M2AlPO-5 (I) in which M1 is at least one transition metal atom having redox catalytic capability; M2 is at least one metal atom in the (IV) oxidation state; M1 and M2 are different from each other; and a proportion of the phosphorous atoms in the M1M2AlPO-5 type structure are replaced by M2 atoms.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: July 15, 2014
    Assignee: University of Southampton
    Inventors: Robert Raja, Alexander James Patterson
  • Patent number: 8779125
    Abstract: A redox ammoximation process in which a ketone or aldehyde is reacted with ammonia and oxygen in the presence of a catalyst; wherein the catalyst is an aluminophosphate based redox catalyst having at least two different redox catalytic sites comprising different transition metal atoms.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: July 15, 2014
    Assignee: University of Southampton
    Inventors: Robert Raja, John Meurig Thomas
  • Patent number: 8772476
    Abstract: Methods for producing lactams from oximes by performing a Beckmann rearrangement using a silicoaluminophosphate catalyst are provided. These catalysts may be used in gas phase or liquid phase reactions to convert oximes into lactams. High conversion of oxime and high selectivity for the desired lactams are produced using the disclosed methods, including high conversion and selectivity for ?-caprolactam produced from cyclohexanone oxime and high conversion and selectivity for ?-laurolactam produced from cyclododecanone oxime.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: July 8, 2014
    Assignee: Honeywell International Inc.
    Inventors: Alan B. Levy, Robert Raja, Matthew E. Potter
  • Patent number: 8759599
    Abstract: The disclosure describes a new class of isomorphously metal-substituted aluminophosphate materials with high phase purity that are capable of performing selective Brönsted acid catalyzed chemical transformations, such as transforming alcohols to olefins, with high conversions and selectivities using mild conditions. Isomorphous substitutions of functional metal ions for both the aluminum ions and the phosphorous ions were successful in various AlPO structures, along with multiple metal substitutions into a single aluminum site and/or a phosphorous site. This invention can be used towards the catalytic conversion of hydroxylated compounds of linear and/or branched moiety with the possibility of being substituted to their respective hydrocarbon products, preferably light olefins containing 2 to 10 carbon atoms, among other chemistries.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: June 24, 2014
    Assignee: Signa Chemistry, Inc.
    Inventors: Michael Lefenfeld, Robert Raja, Alexander James Paterson, Matthew Edward Potter
  • Publication number: 20130245322
    Abstract: A redox ammoximation process in which a ketone or aldehyde is reacted with ammonia and oxygen in the presence of a catalyst, wherein: the catalyst is an aluminophosphate based redox catalyst having the qualitative general formula (I) M1M2AlPO-5 (I) in which M1 is at least one transition metal atom having redox catalytic capability; M2 is at least one metal atom in the (IV) oxidation state; M1 and M2 are different from each other; and a proportion of the phosphorous atoms in the M1M2AlPO-5 type structure are replaced by M2 atoms.
    Type: Application
    Filed: May 8, 2013
    Publication date: September 19, 2013
    Applicant: University of Southampton
    Inventors: Robert Raja, Alexander James Patterson