Patents by Inventor Rajesh Parsapur
Rajesh Parsapur 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: 20240083758Abstract: Embodiments of the present disclosure relate to zeolites and method for making such zeolites. According to embodiments disclosed herein, a zeolite may have a microporous framework including a plurality of micropores having diameters of less than or equal to 2 nm and a plurality of mesopores having diameters of greater than 2 nm and less than or equal to 50 nm. The microporous framework may include an MFI framework type. The microporous framework may include silicon atoms, aluminum atoms, oxygen atoms, and transition metal atoms. The transition metal atoms may be dispersed throughout the entire microporous framework.Type: ApplicationFiled: October 25, 2023Publication date: March 14, 2024Applicants: Saudi Arabian Oil Company, King Abdullah University of Science and TechnologyInventors: Robert Peter Hodgkins, Omer Refa Koseoglu, Kuo-Wei Huang, Jean-Marie Maurice Basset, Yu Han, Rajesh Parsapur, Anissa Bendjeriou Sedjerari, Sathiyamoorthy Murugesan
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Patent number: 11834340Abstract: Embodiments of the present disclosure relate to zeolites and method for making such zeolites. According to embodiments disclosed herein, a zeolite may have a microporous framework including a plurality of micropores having diameters of less than or equal to 2 nm and a plurality of mesopores having diameters of greater than 2 nm and less than or equal to 50 nm. The microporous framework may include an MFI framework type. The microporous framework may include silicon atoms, aluminum atoms, oxygen atoms, and transition metal atoms. The transition metal atoms may be dispersed throughout the entire microporous framework.Type: GrantFiled: April 14, 2021Date of Patent: December 5, 2023Assignees: Saudi Arabian Oil Company, King Abdullah University of Science and TechnologyInventors: Robert Peter Hodgkins, Omer Refa Koseoglu, Kuo-Wei Huang, Jean-Marie Maurice Basset, Yu Han, Rajesh Parsapur, Anissa Bendjeriou Sedjerari, Sathiyamoorthy Murugesan
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Patent number: 11731882Abstract: Disclosed herein are modified zeolites and methods for making modified zeolites. In one or more embodiments disclosed herein, a modified zeolite may include a microporous framework including a plurality of micropores having diameters of less than or equal to 2 nm. The microporous framework may include at least silicon atoms and oxygen atoms. The modified zeolite may further include organometallic moieties each bonded to a nitrogen atom of a secondary amine functional group including a nitrogen atom and a hydrogen atom. The organometallic moieties may include a titanium atom that is bonded to the nitrogen atom of the secondary amine functional group. The nitrogen atom of the secondary amine function group may bridge the titanium atom of the organometallic moiety and a silicon atom of the microporous framework.Type: GrantFiled: April 14, 2021Date of Patent: August 22, 2023Assignees: Saudi Arabian Oil Company, King Abdullah University of Science and TechnologyInventors: Robert Peter Hodgkins, Omer Refa Koseoglu, Jean-Marie Maurice Basset, Kuo-Wei Huang, Sathiyamoorthy Murugesan, Anissa Bendjeriou Sedjerari, Rajesh Parsapur, Manouj K. Gangwar
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Patent number: 11596931Abstract: Modified crystalline zeolite materials have a zeolite framework with both tetra-coordinate Lewis aluminum single sites and Brønsted aluminum sites. The tetra-coordinate Lewis aluminum single sites include aluminum atoms covalently bonded to a variable group and to two oxygen atoms and further coordinated to a third oxygen atom. The variable group may be alkyl, hydride, or hydroxyl. Methods for incorporating tetra-coordinate Lewis aluminum single sites into a crystalline zeolite material include contacting the crystalline zeolite material with a dialkylaluminum hydride R2AlH, where each R is alkyl, to react the dialkylaluminum hydride with the zeolite framework and form tetra-coordinate alkyl aluminum single sites. Heating the alkyl-aluminum zeolite induces ?-hydride elimination of the alkyl groups, whereby tetra-coordinate aluminum hydride single sites are formed.Type: GrantFiled: September 9, 2020Date of Patent: March 7, 2023Assignees: Saudi Arabian Oil Company, King Abdullah University of Science and TechnologyInventors: Robert Peter Hodgkins, Omer Refa Koseoglu, Jean-Marie Basset, Kuo-Wei Huang, Anissa Bendjeriou-Sedjerari, Sathiyamoorthy Murugesan, Rajesh Parsapur
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Publication number: 20220340435Abstract: Embodiments of the present disclosure relate to zeolites and method for making such zeolites. According to embodiments disclosed herein, a zeolite may have a microporous framework including a plurality of micropores having diameters of less than or equal to 2 nm and a plurality of mesopores having diameters of greater than 2 nm and less than or equal to 50 nm. The microporous framework may include an MFI framework type. The microporous framework may include silicon atoms, aluminum atoms, oxygen atoms, and transition metal atoms. The transition metal atoms may be dispersed throughout the entire microporous framework.Type: ApplicationFiled: April 14, 2021Publication date: October 27, 2022Applicants: Saudi Arabian Oil Company, King Abdullah University of Science and TechnologyInventors: Robert Peter Hodgkins, Omer Refa Koseoglu, Kue-Wei Huang, Jean-Marie Maurice Basset, Yu Han, Rajesh Parsapur, Anissa Bendjeriou Sedjerari, Sathiyamoorthy Murugesan
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Publication number: 20220332591Abstract: Disclosed herein are modified zeolites and methods for making modified zeolites. In one or more embodiments disclosed herein, a modified zeolite may include a microporous framework including a plurality of micropores having diameters of less than or equal to 2 nm. The microporous framework may include at least silicon atoms and oxygen atoms. The modified zeolite may further include organometallic moieties each bonded to a nitrogen atom of a secondary amine functional group including a nitrogen atom and a hydrogen atom. The organometallic moieties may include a titanium atom that is bonded to the nitrogen atom of the secondary amine functional group. The nitrogen atom of the secondary amine function group may bridge the titanium atom of the organometallic moiety and a silicon atom of the microporous framework.Type: ApplicationFiled: April 14, 2021Publication date: October 20, 2022Applicants: Saudi Arabian Oil Company, King Abdullah University of Science and TechnologyInventors: Robert Peter Hodgkins, Omer Refa Koseoglu, Jean-Marie Maurice Basset, Kue-Wei Huang, Sathiyamoorthy Murugesan, Anissa Bendjeriou Sedjerari, Rajesh Parsapur, Manouj K. Gangwar
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Publication number: 20220332592Abstract: Disclosed herein are amine functionalized zeolites and methods for making amine functionalized zeolites. In one or more embodiments disclosed herein, an amine functionalized zeolite may include a microporous framework including a plurality of micropores having diameters of less than or equal to 2 nm. The microporous framework may include at least silicon atoms and oxygen atoms. The amine functionalized zeolite may further include a plurality of mesopores having diameters of greater than 2 nm and less than or equal to 50 nm and one or more of isolated terminal primary amine functionalities bonded to silicon atoms of the microporous framework or silazane functionalities, where the nitrogen atom of the silazane bridges two silicon atoms of the microporous framework.Type: ApplicationFiled: April 14, 2021Publication date: October 20, 2022Applicants: Saudi Arabian Oil Company, King Abdullah University of Science and TechnologyInventors: Robert Peter Hodgkins, Omer Refa Koseoglu, Jean-Marie Maurice Basset, Kue-Wei Huang, Anissa Bendjeriou Sedjerari, Sathiyamoorthy Murugesan, Rajesh Parsapur
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Publication number: 20220072521Abstract: Modified crystalline zeolite materials have a zeolite framework with both tetra-coordinate Lewis aluminum single sites and Brønsted aluminum sites. The tetra-coordinate Lewis aluminum single sites include aluminum atoms covalently bonded to a variable group and to two oxygen atoms and further coordinated to a third oxygen atom. The variable group may be alkyl, hydride, or hydroxyl. Methods for incorporating tetra-coordinate Lewis aluminum single sites into a crystalline zeolite material include contacting the crystalline zeolite material with a dialkylaluminum hydride R2AlH, where each R is alkyl, to react the dialkylaluminum hydride with the zeolite framework and form tetra-coordinate alkyl aluminum single sites. Heating the alkyl-aluminum zeolite induces ?-hydride elimination of the alkyl groups, whereby tetra-coordinate aluminum hydride single sites are formed.Type: ApplicationFiled: September 9, 2020Publication date: March 10, 2022Applicants: Saudi Arabian Oil Company, King Abdullah University of Science and TechnologyInventors: Robert Peter Hodgkins, Omer Refa Koseoglu, Jean-Marie Basset, Kuo-Wei Huang, Anissa Bendjeriou-Sedjerari, Sathiyamoorthy Murugesan, Rajesh Parsapur