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).
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Publication number: 20230062611Abstract: 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: ApplicationFiled: December 16, 2020Publication date: March 2, 2023Inventors: Robert RAJA, Daniel STEWART
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Patent number: 10537884Abstract: 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: GrantFiled: October 16, 2018Date of Patent: January 21, 2020Assignees: AdvanSix Resins & Chemicals LLC, University of SouthamptonInventors: Alan B. Levy, Robert Raja, Stephanie H. Newland, Scott R. Keenan, Simon R. Bare
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Publication number: 20190046963Abstract: 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: ApplicationFiled: October 16, 2018Publication date: February 14, 2019Inventors: Alan B. Levy, Robert Raja, Stephanie H. Newland, Scott R. Keenan, Simon R. Bare
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Publication number: 20180065910Abstract: 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: ApplicationFiled: October 23, 2017Publication date: March 8, 2018Applicants: AdvanSix Resins & Chemicals LLCInventors: Alan B. Levy, Scott R. Keenan, Robert Raja, Arran M. Gill, Matthew E. Potter, Sivan A. Van Aswegen
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Patent number: 9822052Abstract: 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: GrantFiled: September 29, 2016Date of Patent: November 21, 2017Assignees: ADVANSIX RESINS & CHEMICALS LLC, UNIVERSITY OF SOUTHAMPTONInventors: Alan B. Levy, Scott R. Keenan, Robert Raja, Arran M. Gill, Matthew E. Potter, Sivan A. Van Aswegen
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Patent number: 9662643Abstract: 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: GrantFiled: April 28, 2014Date of Patent: May 30, 2017Assignees: AdvanSix Resins & Chemical LLC, University of SouthamptonInventors: Alan B. Levy, Robert Raja, Matthew E. Potter
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Publication number: 20170096380Abstract: 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: ApplicationFiled: September 29, 2016Publication date: April 6, 2017Applicant: University of SouthamptonInventors: Alan B. Levy, Scott R. Keenan, Robert Raja, Arran M. Gill, Matthew E. Potter, Sivan A. Van Aswegen
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Publication number: 20160279622Abstract: 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: ApplicationFiled: April 28, 2014Publication date: September 29, 2016Applicants: Honeywell International Inc., University of SouthamptonInventors: Alan B. Levy, Robert Raja, Matthew E. Potter
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Publication number: 20160167030Abstract: 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: ApplicationFiled: November 30, 2015Publication date: June 16, 2016Applicant: University of SouthamptonInventors: Alan B. Levy, Robert Raja, Stephanie H. Newland, Scott R. Keenan, Simon R. Bare
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Publication number: 20160008798Abstract: 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: ApplicationFiled: March 25, 2015Publication date: January 14, 2016Applicant: SIGNA CHEMISTRY, INC.Inventors: Michael LEFENFELD, Robert RAJA, Alexander James PATERSON, Matthew Edward POTTER
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Patent number: 9221762Abstract: 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: GrantFiled: May 9, 2014Date of Patent: December 29, 2015Assignees: Honeywell International Inc., University of SouthamptonInventors: Alan B. Levy, Robert Raja, Matthew E. Potter
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Publication number: 20150306586Abstract: 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: ApplicationFiled: April 28, 2014Publication date: October 29, 2015Applicants: Honeywell International Inc., University of SouthamptonInventors: Alan B. Levy, Robert Raja, Matthew E. Potter
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Publication number: 20150126732Abstract: 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: ApplicationFiled: May 9, 2014Publication date: May 7, 2015Applicants: Honeywell International Inc., University of SouthamptonInventors: Alan B. Levy, Robert Raja, Matthew E. Potter
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Patent number: 9012709Abstract: 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: GrantFiled: May 12, 2014Date of Patent: April 21, 2015Assignee: Signa Chemistry, Inc.Inventors: Michael Lefenfeld, Robert Raja, Alexander James Paterson, Matthew Edward Potter
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Publication number: 20140335013Abstract: 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: ApplicationFiled: May 12, 2014Publication date: November 13, 2014Applicant: SIGNA CHEMISTRY, INC.Inventors: Michael LEFENFELD, Robert RAJA, Alexander James PATERSON, Michael Edward POTTER
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Patent number: 8779124Abstract: 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: GrantFiled: May 8, 2013Date of Patent: July 15, 2014Assignee: University of SouthamptonInventors: Robert Raja, Alexander James Patterson
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Patent number: 8779125Abstract: 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: GrantFiled: May 8, 2013Date of Patent: July 15, 2014Assignee: University of SouthamptonInventors: Robert Raja, John Meurig Thomas
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Patent number: 8772476Abstract: 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: GrantFiled: October 23, 2012Date of Patent: July 8, 2014Assignee: Honeywell International Inc.Inventors: Alan B. Levy, Robert Raja, Matthew E. Potter
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Patent number: 8759599Abstract: 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: GrantFiled: January 22, 2010Date of Patent: June 24, 2014Assignee: Signa Chemistry, Inc.Inventors: Michael Lefenfeld, Robert Raja, Alexander James Paterson, Matthew Edward Potter
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Publication number: 20130245322Abstract: 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: ApplicationFiled: May 8, 2013Publication date: September 19, 2013Applicant: University of SouthamptonInventors: Robert Raja, Alexander James Patterson