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    Tunable, rapid uptake, aminopolymer aerogel sorbent for direct air capture of CO2
    2.
    发明授权
    Tunable, rapid uptake, aminopolymer aerogel sorbent for direct air capture of CO2 有权

    公开(公告)号：US11612852B2

    公开(公告)日：2023-03-28

    申请号：US17211588

    申请日：2021-03-24

    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

    Inventor： Mahati Chintapalli ,  Stephen Meckler ,  Gabriel Iftime ,  Rahul Pandey ,  Mary Louie ,  Eugene Shin Ming Beh

    IPC: B01J20/26 ,  B01J20/28 ,  B01D53/14 ,  B01J13/00 ,  C08J3/24

    Abstract: 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.

    Energy efficient removal of CO2 from air by integrating with H2 generation
    3.
    发明授权
    Energy efficient removal of CO2 from air by integrating with H2 generation 有权

    公开(公告)号：US11207643B2

    公开(公告)日：2021-12-28

    申请号：US16924573

    申请日：2020-07-09

    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

    Inventor： Francisco E. Torres ,  Eugene Shin Ming Beh ,  Jessica Louis Baker Rivest

    IPC: B01D53/96 ,  B01D53/62 ,  B01D53/78 ,  B01D53/14 ,  C25B9/23 ,  C01B3/00 ,  C25B1/04 ,  C25B9/73

    Abstract: A method of removing carbon dioxide from an atmosphere and generating hydrogen includes capturing carbon dioxide from the atmosphere in an alkaline capture solution, sending the alkaline capture solution to a series of electrolyzers in a CO2-rich path, wherein each electrolyzer cell raises the acidity of the input CO2-rich solution to produce an acidified CO2-rich solution, removing carbon dioxide from the acidified CO2-rich solution at a carbon dioxide removal unit operation to produce a CO2-poor solution, sending the CO2-poor solution to the series of electrolyzers in a return path, wherein each electrolyzer raises the alkalinity of the return CO2-poor solution to produce a basified CO2-poor solution, wherein a difference in pH between the CO2-rich solution and the CO2-poor solution within each electrolyzer is less than 3, and returning the basified CO2-poor solution to the carbon dioxide capture unit operation.

    Energy efficient removal of CO2 from air by integrating with H2 generation
    7.
    发明授权
    Energy efficient removal of CO2 from air by integrating with H2 generation 有权

    公开(公告)号：US10981114B2

    公开(公告)日：2021-04-20

    申请号：US15941442

    申请日：2018-03-30

    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

    Inventor： Francisco E. Torres ,  Eugene Shin Ming Beh ,  Jessica Louis Baker Rivest

    IPC: B01D53/96 ,  B01D53/62 ,  C25B9/23 ,  C25B9/73 ,  B01D53/78 ,  B01D53/14 ,  C01B3/00 ,  C25B1/04

    Abstract: A system has an alkaline capture stream as an input, an alkaline depleted stream as an output, a carbon dioxide removal unit operation having a return stream as an output, and a series of electrolyzers, each electrolyzer to receive a CO2-rich input stream and produce an acidified output stream that is more acidic than the CO2-rich input stream, and to receive a return stream and produce a basified output stream that is more alkaline than the input return stream. A method of removing carbon dioxide from an atmosphere and generating hydrogen includes capturing carbon dioxide from an atmosphere in an alkaline capture solution, sending the alkaline solution as a CO2-rich input solution to a series of electrolyzers in a CO2-rich path, removing carbon dioxide from the acidified CO2-rich solution at a removal unit to produce a CO2-poor solution, sending the CO2-poor solution to the series of electrolyzers in a return path, and returning the return solution to the alkaline capture stream. An electrolyzer is also discussed.

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