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公开(公告)号：US11612852B2
公开(公告)日：2023-03-28
申请号：US17211588
申请日：2021-03-24
发明人： Mahati Chintapalli , Stephen Meckler , Gabriel Iftime , Rahul Pandey , Mary Louie , Eugene Shin Ming Beh
摘要： A porous polymer aerogel, wherein the aerogel has greater than 5 wt % of amine containing vinyl monomers integrated into a polymer backbone. A method of fabrication of a porous polymer aerogel amine material, includes preparing a solution comprising at least a solvent, amine monomers having protected amino groups, one or more crosslinkers, one or more radical initiators, and a nitroxide mediator, removing oxygen from the solution, heating the solution to promote polymerization and to produce a polymerized material, performing solvent exchange with the polymerized material, causing a deprotection reaction in the polymerized material to remove groups protecting the amino groups, soaking and rinsing the material to remove excess reagents and any byproducts of the deprotection reaction, and drying the material to produce the amine sorbent. A system to separate CO2 from other gases, comprising a polymer porous aerogel sorbent having greater than 5 wt % of amine containing vinyl monomers integrated into a polymer backbone.
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公开(公告)号：US20210260793A1
公开(公告)日：2021-08-26
申请号：US17080998
申请日：2020-10-27
发明人： Gabriel Iftime , Junhua Wei , Jerome Unidad , Rahul Pandey , Sean Roark Garner
摘要： A method of recycling fiber reinforced polymers includes grinding used fiber reinforced polymers material to produce ground particles, functionalizing the ground particles to produce functionalized particles, dispersing the functionalized particles into a base resin, dispensing the resin with functionalized particles into one or more layers of continuous fiber mats, molding the resin with functionalized particles and the continuous fiber mats into a form of a desired part, and curing the form to produce the part. The used fiber reinforced polymer materials may be carbon fiber reinforced polymers or glass fiber reinforced polymer materials.
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公开(公告)号：US12092597B2
公开(公告)日：2024-09-17
申请号：US17541768
申请日：2021-12-03
发明人： Ravi Neelakantan , Rahul Pandey
CPC分类号： G01N27/125 , G01N33/0036
摘要： Sensors for detecting a formaldehyde-containing gas may include a first electrode and a second electrode; and an arylphosphine nanomaterial construct disposed between the first electrode and the second electrode, the arylphosphine nanomaterial construct including single-walled carbon nanotubes; and an arylphosphine including at least one aryl group. Methods for detecting formaldehyde include exposing a sensor to a formaldehyde-containing gas, the sensor including a first electrode and a second electrode; and an arylphosphine nanomaterial construct disposed between the first electrode and the second electrode, the arylphosphine nanomaterial construct including single-walled carbon nanotubes; and an arylphosphine containing at least one aryl group; monitoring a resistance between the first electrode and the second electrode; and determining a formaldehyde concentration from the resistance.
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4.发明申请公开(公告)号：US20220275466A1
公开(公告)日：2022-09-01
申请号：US17663152
申请日：2022-05-12
发明人： Divyaraj Desai , Jessica Louis Baker Rivest , Dane Andrew Boysen , Rahul Pandey , Eugene Shin Ming Beh
摘要： A method for producing a homogenous molten composition and a fluid product is disclosed. For example, the method includes producing a first molten metal composition in an enclosed volume, contacting a hydrocarbon reactant with the first molten metal composition, decomposing the hydrocarbon reactant into at least one fluid product and carbon, forming a metal alloy from a mixture of the carbon and the first molten metal composition, and separating a homogenous second molten composition from the metal alloy.
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公开(公告)号：US11944933B2
公开(公告)日：2024-04-02
申请号：US18069549
申请日：2022-12-21
发明人： Mahati Chintapalli , Stephen Meckler , Gabriel Iftime , Rahul Pandey , Mary Louie , Eugene Shin Ming Beh
CPC分类号： B01D53/14 , B01J13/0065 , B01J13/0091 , B01J20/264 , C08J3/24 , B01D2253/202 , B01D2253/311 , B01D2257/504 , B01J20/28057 , B01J20/28069 , C08J2205/026
摘要： A primary amine polymer aerogel comprising greater than 5 wt. % of primary amine monomers covalently bound to cross-linking monomers, wherein the primary amine monomers are selected from vinyl amine. A secondary amine polymer aerogel comprising secondary amine monomers covalently bound to cross-linking monomers, the secondary amine monomers being a result of substituting a hydrogen atom from a primary amine polymer aerogel, the primary amine polymer aerogel comprising vinyl amine monomers covalently bound to the cross-linking monomers. A tertiary amine polymer aerogel comprising tertiary amine monomers covalently bound to cross-linking monomers, the tertiary amine monomers being a result of substituting hydrogen atoms from a primary amine polymer aerogel, the primary amine polymer aerogel comprising vinyl amine monomers covalently bound to the cross-linking monomers.
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公开(公告)号：US20230126616A1
公开(公告)日：2023-04-27
申请号：US18069549
申请日：2022-12-21
发明人： Mahati Chintapalli , Stephen Meckler , Gabriel Iftime , Rahul Pandey , Mary Louie , Eugene Shin Ming Beh
摘要： A primary amine polymer aerogel comprising greater than 5 wt. % of primary amine monomers covalently bound to cross-linking monomers, wherein the primary amine monomers are selected from vinyl amine. A secondary amine polymer aerogel comprising secondary amine monomers covalently bound to cross-linking monomers, the secondary amine monomers being a result of substituting a hydrogen atom from a primary amine polymer aerogel, the primary amine polymer aerogel comprising vinyl amine monomers covalently bound to the cross-linking monomers. A tertiary amine polymer aerogel comprising tertiary amine monomers covalently bound to cross-linking monomers, the tertiary amine monomers being a result of substituting hydrogen atoms from a primary amine polymer aerogel, the primary amine polymer aerogel comprising vinyl amine monomers covalently bound to the cross-linking monomers.
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公开(公告)号：US20220315493A1
公开(公告)日：2022-10-06
申请号：US17582901
申请日：2022-01-24
发明人： Junhua Wei , Gabriel Iftime , Jerome Unidad , Rahul Pandey , Mahati Chintapalli
IPC分类号： C04B35/80 , C04B35/626
摘要： A ceramic matrix composite has fibers, a ceramic matrix bonded to the fibers, and ceramic particles, distributed throughout the matrix. A method includes mixing a high char ceramic resin precursor with ceramic particles, adding a catalyst to create a mixture, heating the mixture to produce functionalized ceramic particles, and cooling the mixture to produce a resin having functionalized particles.
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公开(公告)号：US20210370226A1
公开(公告)日：2021-12-02
申请号：US17211588
申请日：2021-03-24
发明人： Mahati Chintapalli , Stephen Meckler , Gabriel Iftime , Rahul Pandey , Mary Louie , Eugene Shin Ming Beh
摘要： A porous polymer aerogel, wherein the aerogel has greater than 5 wt % of amine containing vinyl monomers integrated into a polymer backbone. A method of fabrication of a porous polymer aerogel amine material, includes preparing a solution comprising at least a solvent, amine monomers having protected amino groups, one or more crosslinkers, one or more radical initiators, and a nitroxide mediator, removing oxygen from the solution, heating the solution to promote polymerization and to produce a polymerized material, performing solvent exchange with the polymerized material, causing a deprotection reaction in the polymerized material to remove groups protecting the amino groups, soaking and rinsing the material to remove excess reagents and any byproducts of the deprotection reaction, and drying the material to produce the amine sorbent. A system to separate CO2 from other gases, comprising a polymer porous aerogel sorbent having greater than 5 wt % of amine containing vinyl monomers integrated into a polymer backbone.
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公开(公告)号：US11958747B2
公开(公告)日：2024-04-16
申请号：US17235825
申请日：2021-04-20
申请人： Palo Alto Research Center Incorporated , United States of America as Represented by the Administrator of the NASA , Bay Systems Consulting, Inc.
发明人： Gabriel Iftime , Beomseok Kim , Clinton J. Smith , Eric D. Cocker , Junhua Wei , David Eric Schwartz , Meyya Meyyappan , Rahul Pandey , Yong Zhang
IPC分类号： C01B32/168 , C01B32/176 , G01N27/12 , G01N33/00
CPC分类号： C01B32/168 , C01B32/176 , G01N27/12 , G01N33/0036
摘要： Disclosed are methods and systems of providing carbon nanotubes decorated with polymer coated metal nanoparticles. Then, annealing the metal coated carbon nanotubes to reduce a quantity of hydrophilic components of the polymer coating.
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公开(公告)号：US20230149849A1
公开(公告)日：2023-05-18
申请号：US18157311
申请日：2023-01-20
发明人： Mahati Chintapalli , Stephen Meckler , Gabriel Iftime , Rahul Pandey , Mary Louie , Eugene Shin Ming Beh
CPC分类号： B01D53/14 , B01J20/264 , B01J13/0065 , B01J13/0091 , C08J3/24 , B01J20/28069
摘要： A method of fabrication of a porous polymer aerogel amine material includes preparing a solution comprising at least a solvent, amine monomers having protecting groups, one or more crosslinkers, and one or more radical initiators, heating the solution to promote polymerization and to produce a polymerized material, performing solvent exchange with the polymerized material, causing a deprotection reaction in the polymerized material to remove the protecting groups to produce a deprotected material, soaking and rinsing the deprotected material to remove excess reagents and any byproducts of the deprotection reaction, and drying the deprotecting material to produce the amine sorbent. A system to separate CO2 from other gases has a polymer porous aerogel sorbent having greater than 5 wt % of amine containing vinyl monomers integrated into a polymer backbone, and the amine containing vinyl monomers may have a molecular weight of less than 100 g/mol.
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