Electrochemical Synthesis of Cementitious Compounds

    公开(公告)号:US20220380909A1

    公开(公告)日:2022-12-01

    申请号:US17771197

    申请日:2020-10-28

    IPC分类号: C25B1/18 C25B9/19 C25B11/042

    摘要: In some aspects, the present disclosure pertains to methods for the electrochemical production of calcium silicate compounds in an electrochemical cell that comprises (a) a Ca-based electrode that comprises calcium metal or an inorganic calcium material, (b) an SiOx-based electrode that comprises a SiOx material, where x ranges from 1 to 2, and (c) a liquid electrolyte disposed between the Ca-based electrode and the SiOx-based electrode. In these methods, the electrochemical cell is operated under conditions such that calcium cations are produced at the Ca-based electrode and one or more calcium silicate (Ca—Si-oxide) compounds are produced at the SiOx-based electrode. In other aspects, the present disclosure pertains to systems for the electrochemical production of calcium silicate compounds.

    INTEGRATED HYDROGEN PRODUCTION METHOD AND SYSTEM

    公开(公告)号:US20220372635A1

    公开(公告)日:2022-11-24

    申请号:US17741587

    申请日:2022-05-11

    摘要: Herein discussed is a method of producing hydrogen comprising introducing a metal smelter effluent gas or a basic oxygen furnace (BOF) effluent gas or a mixture thereof into an electrochemical (EC) reactor, wherein the EC reactor comprises a mixed-conducting membrane. In an embodiment, the method comprises introducing steam into the EC reactor on one side of the membrane, wherein the effluent gas is on the opposite side of the membrane, wherein the effluent gas and the steam are separated by the membrane and do not come in contact with each other.

    System and Method for Making Hypochlorous Acid Using Saltwater with a Bicarbonate Compound

    公开(公告)号:US20220364247A1

    公开(公告)日:2022-11-17

    申请号:US17863929

    申请日:2022-07-13

    摘要: A system and a method are provided for making hypochlorous acid using saltwater with bicarbonate compound. The system includes an electrolytic cell, a quantity of saltwater solution, and a quantity of bicarbonate compound. The quantity of saltwater solution is poured into the electrolytic cell and then undergoes an electrolytic process. As a result of the quantity of saltwater solution going through the electrolytic process, a hypochlorous acid solution is yielded. In order to ensure a pure hypochlorous acid solution is formed, the quantity of bicarbonate compound can be added into the electrolytic cell along with the quantity of saltwater solution before the electrolytic process or the quantity of bicarbonate compound can be added into the hypochlorous acid solution after the hypochlorous acid solution is yielded. This process adjusts the pH level of the hypochlorous acid solution, and thus, produces a purer hypochlorous acid solution.

    Passive dual modulating regulator for hydrogen generation

    公开(公告)号:US11500401B1

    公开(公告)日:2022-11-15

    申请号:US17749595

    申请日:2022-05-20

    申请人: LG, LLC

    摘要: A passive dual modulating regulator that responds to a pressure differential between a hydrogen-side and an oxygen-side of one or more proton-exchange membrane (PEM) cells is provided. The passive dual modulating regulator includes a flexible diaphragm that is clamped along its periphery between hemispherical chambers. A bi-directional valve assembly extends through the flexible diaphragm and includes opposing valve plugs for selectively closing the output ports of the respective hemispherical chambers. Large or sustained pressure imbalances between the hydrogen-side and the oxygen-side of a hydrogen generation system are avoided without active control inputs of any kind, and consequently a rupture of the PEM is entirely avoided.

    METHOD OF OPERATING ELECTROLYSIS APPARATUS

    公开(公告)号:US20220316081A1

    公开(公告)日:2022-10-06

    申请号:US17595861

    申请日:2020-04-22

    IPC分类号: C25B15/02 C25B9/19

    摘要: Provided is a method of operating an electrolysis apparatus that can inhibit electrode degradation under a variable power supply. The method of operating an electrolysis apparatus includes: an energization step in which electrolysis of electrolyte is performed in an anode compartment including an anode and a cathode compartment including a cathode that are partitioned from each other by a membrane; a suspension step in which electrolysis of electrolyte in the anode compartment and the cathode compartment is suspended; and a discharge step of, in the suspension step, electrically connecting an electrolyzer of the electrolysis apparatus to an external load and adjusting a cell voltage to 0.1 V or less in 5 hours or less.