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    DURABLE CONCRETE WITH CHEMICALLY LINKED CEMENT
    12.
    发明申请
    DURABLE CONCRETE WITH CHEMICALLY LINKED CEMENT 审中-公开

    公开(公告)号：US20200262755A1

    公开(公告)日：2020-08-20

    申请号：US16710246

    申请日：2019-12-11

    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

    Inventor： Gabriel Iftime ,  Junhua Wei ,  Divyaraj Desai ,  Jessica Louis Baker Rivest

    IPC: C04B24/28 ,  C04B7/02 ,  C04B24/12 ,  C04B24/32 ,  C04B14/06

    Abstract: A composition of matter has cement particles and resin structures having: a first functional group bonded directly to a surface of each cement particle; and a second functional group that bonds to calcium silicate hydrate upon hydration, wherein the second functional group is bondable with second functional groups of others of the cement particles to form a polymer network; and a backbone that connects the first functional group with the second functional group. A method of forming cement particles includes mixing cement particles with reactive molecules, the reactive molecules having a first functional group bonded directly to a surface of each cement particle, a second functional group that is bondable to calcium silicate hydrate upon hydration, wherein the second functional group is bondable with second function groups of others of the cement particles to form a polymer network, and a backbone that connects the first functional group with the second functional group. A composition of matter has cement particles, and a cured resin structure resulting from a reaction between two or more reactive molecules having functional groups that react with each other onto the surfaces of the cement particle, wherein one of the reactive molecules is used in less than a stoichiometric amount, leaving unreacted functional groups, and wherein the unreacted functional groups are bondable to calcium silicate hydrate upon hydration.

    Liquid Metal Condensate Catalyzed Hydrocarbon Pyrolysis
    18.
    发明申请
    Liquid Metal Condensate Catalyzed Hydrocarbon Pyrolysis 有权

    公开(公告)号：US20210170387A1

    公开(公告)日：2021-06-10

    申请号：US17022435

    申请日：2020-09-16

    Applicant: Palo Alto Research Center Incorporated

    Inventor： Jessica Louis Baker Rivest ,  Divyaraj Desai ,  Dane Andrew Boysen ,  Ashish V. Pattekar

    IPC: B01J37/08 ,  C01B3/26 ,  C01B32/05 ,  B01J38/02 ,  B01J23/06 ,  B01J23/04

    Abstract: Methods comprising: evaporating a catalyst source to produce a catalyst gas; condensing the catalyst gas to produce a catalyst vapor comprising catalyst droplets suspended in a gas phase; and contacting the catalyst vapor with a hydrocarbon gas to catalyze a decomposition reaction of the hydrocarbon gas into hydrogen gas and carbon. And, systems comprising: a catalyst source evaporator that provides a first stream to a reactor; a hydrocarbon source that provides a second stream to the reactor; a cooling column coupled to the reactor via a third stream comprising hydrogen, catalyst liquid, solid carbon, optionally catalyst gas, and optionally unreacted hydrocarbon gas such that the cooling column receives the third stream from the reactor; and wherein the cooling column has effluent streams that include (a) a fourth stream that comprises hydrogen and optionally catalyst gas and (b) a fifth stream that comprises catalyst liquid.

    SYSTEM AND METHOD FOR ADJUSTING CARBON DIOXIDE AND WATER CONCENTRATIONS IN AN ENVIRONMENT
    19.
    发明申请
    SYSTEM AND METHOD FOR ADJUSTING CARBON DIOXIDE AND WATER CONCENTRATIONS IN AN ENVIRONMENT 审中-公开

    公开(公告)号：US20200206682A1

    公开(公告)日：2020-07-02

    申请号：US16235182

    申请日：2018-12-28

    Applicant: Palo Alto Research Center Incorporated

    Inventor： Divyaraj Desai ,  Mahati Chintapalli ,  Jessica Louis Baker Rivest ,  Eric Cocker

    IPC: B01D53/32 ,  B01D53/26 ,  F24F3/16

    Abstract: A device controls levels of carbon dioxide and water in a controlled environment. The device comprises a first electrode chamber, which receives an input fluid comprising first concentrations of carbon dioxide and water and is configured to deliver a first output fluid having concentrations of carbon dioxide and water lower than the first concentrations to a first environment, and a second electrode chamber having an outlet configured to deliver a second output fluid having third concentrations of carbon dioxide and water to a second environment. A reduction catalyst layer in the first electrode chamber reduces carbon dioxide and water in the input fluid to form ionic carrier species, an ion-transporting membrane is positioned between the first and second electrode chambers and comprises carrier species, and an oxidation catalyst layer in the second electrode chamber oxidizes the ionic carrier species to form carbon dioxide and water.

    Flowing electrolyte fuel cell with improved performance and stability
    20.
    发明授权
    Flowing electrolyte fuel cell with improved performance and stability 有权

    公开(公告)号：US10446861B2

    公开(公告)日：2019-10-15

    申请号：US14981104

    申请日：2015-12-28

    Applicant: Palo Alto Research Center Incorporated

    Inventor： Divyaraj Desai ,  Vedasri Vedharathinam ,  Martin Joseph Sheridan ,  Ashish V. Pattekar ,  Craig Eldershaw ,  Rajesh Kumar Padmarajan ,  Gabriel Iftime

    IPC: H01M8/00 ,  H01M8/04276 ,  H01M4/86 ,  H01M8/2455 ,  H01M8/18 ,  H01M8/22 ,  H01M8/023

    Abstract: A flowing electrolyte fuel cell system design (DHCFC-Flow) is provided. The use of a flowing oxygen-saturated electrolyte in a fuel cell offers a significant enhancement in the cell performance characteristics. The mass transfer and reaction kinetics of the superoxide/peroxide/oxide ion (mobile oxygen ion species) in the fuel cell are enhanced by recirculating an oxidizing gas-saturated electrolyte. Recirculating oxygen-saturated electrolyte through a liquid channel enhances the maximal current observed in a fuel cell. The use of a oxygen saturated electrolyte ensures that the reaction kinetics of the oxygen reduction reaction are fast and the use of convection ameliorates concentration gradients and the diffusion-limited maximum current density. The superoxide ion is generated in situ by the reduction of the oxygen dissolved in the gaseous electrolyte. Also, a dual porosity membrane allows the uniform flow of fuel (e.g., methane) on the fuel side, without allowing phase mixing. The capillary pressure for liquid intrusion into the gas phase and vice versa is quite large, estimated to be 1-10 psi. This makes it easier to control the fluctuations in gas/liquid velocity which might otherwise lead to phase mixing and the loss of fuel cell performance. In one variation, a dual-porosity membrane structure is incorporated in the system to allow uniform flow of fuel and prevent mixing of fuel with a liquid electrolyte.

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