公开(公告)号：US20240360572A1

公开(公告)日：2024-10-31

申请号：US18574593

申请日：2022-08-01

申请人： INDUSTRIE DE NORA S.P.A.

发明人： Alice CALDERARA ,  Stefania MORA

IPC分类号： C25B11/053 ,  C25B1/04 ,  C25B1/16 ,  C25B1/26 ,  C25B11/061 ,  C25B11/097

CPC分类号： C25B11/053 ,  C25B1/04 ,  C25B1/16 ,  C25B1/26 ,  C25B11/061 ,  C25B11/097

摘要： An electrode and in particular an electrode suitable for use as a cathode for hydrogen evolution in industrial electrolytic processes and a method for its preparation. The electrode comprises a metal substrate provided with a catalytic coating, the catalytic coating comprising a first protective layer in direct contact with the substrate, the first protective layer comprising platinum, in the form of metal or its oxides, and a second layer applied on top of the first protective layer, the second layer comprising platinum, palladium and an element selected from the group of rare earths, in the form of metals or their oxides, wherein the second layer comprises 15-40% by weight of platinum and 10-30% by weight of palladium and 40-75% by weight of an element selected from the group of rare earths referred to metals.

公开(公告)号：US20240309531A1

公开(公告)日：2024-09-19

申请号：US18139270

申请日：2023-04-25

申请人： VERDEEN CHEMICALS INC.

发明人： Vipin Tyagi ,  Amol Harishchandra Naik ,  Nishchay Chadha

IPC分类号： C25C1/18 ,  C25B1/16 ,  C25B1/26 ,  C25B9/19 ,  C25B9/63 ,  C25B13/08 ,  C25C7/02 ,  C25C7/04 ,  H01M10/54

CPC分类号： C25C1/18 ,  C25B1/16 ,  C25B1/26 ,  C25B9/19 ,  C25B9/63 ,  C25B13/08 ,  C25C7/02 ,  C25C7/04 ,  H01M10/54 ,  H01M10/06

摘要： Disclosed are solutions for the recovery of elemental metals at industrial scales without smelting including, for example, the recovery of near-pure lead from recycled LABs via specialized electrolytic processing. Further disclosed are new processes, innovative electrolyzer designs, and/or novel utilization of supplemental chemicals necessary for successful electrolysis of pure metal from impure forms (e.g., pure lead from lead oxides), and especially applicable for solid-state electrolysis of mixtures comprising lead paste, electrolyte, and supplemental chemicals. With particular regard to recovering near-pure lead during LAB recycling, solid-state electrolysis of mixtures comprising impure lead (e.g., lead paste) is made possible and scalable to industrial levels via utilization of a vertically-arranged series of two-compartment horizontal cathodes or two-compartment horizontal bipolar cathodes in an electrolyzer assembly to simultaneously produce, for example, elemental lead (Pb), sodium hydroxide (NaOH), and chlorine gas (Cl2).

公开(公告)号：US20240124986A1

公开(公告)日：2024-04-18

申请号：US18276314

申请日：2022-02-21

申请人： TOHOKU UNIVERSITY

发明人： Kousuke HIROMORI ,  Naomi KITAKAWA ,  Keisuke KATAGAMI

IPC分类号： C25B1/16 ,  C01D1/04 ,  C02F1/461 ,  C11B3/06 ,  C25B9/19 ,  D21C3/02 ,  D21C11/04

CPC分类号： C25B1/16 ,  C01D1/04 ,  C02F1/46104 ,  C11B3/06 ,  C25B9/19 ,  D21C3/02 ,  D21C11/04 ,  C02F2103/322 ,  C02F2201/46115

摘要： A method for producing an alkali metal/alkaline earth metal hydroxide includes: subjecting a solution containing RA—COOMB and/or (RA—COO)2MC and water to an electrochemical reaction to cause a Kolbe electrolysis reaction at an anode to generate at least RA—RA, carbon dioxide, and an MB+ ion and/or MC2+ ion; and neutralizing the MB+ ion and/or MC2+ ion by using an OH− ion generated by electrolysis of water at a cathode. RA represents a hydrocarbon group, MB represents an alkali metal, and MC represents an alkaline earth metal.

公开(公告)号：US11946149B2

公开(公告)日：2024-04-02

申请号：US17520709

申请日：2021-11-07

申请人： TOAGOSEI CO., LTD. ,  KANEKA CORPORATION

发明人： Tsutomu Ohnishi ,  Tsugiyoshi Osakabe ,  Tatsurou Yamashita ,  Takuya Shimura ,  Mikihito Sugiyama ,  Yukinori Iguchi

IPC分类号： C25B15/02 ,  C25B1/16 ,  C25B1/46 ,  C25B9/73 ,  C25B9/77 ,  C25B15/021

CPC分类号： C25B15/02 ,  C25B1/16 ,  C25B1/46 ,  C25B9/73 ,  C25B9/77 ,  C25B15/021

摘要： Apparatus for producing alkali hydroxide and method for operating apparatus for producing alkali hydroxide are provided. A cooling chamber through which a coolant can pass is constructed by placing a separation wall in a cathode chamber on a side opposite to an ion-exchange membrane, and a flow rate adjuster, such as manual valves, which can adjust the supply flow rate of the coolant is placed in each unit cell. The electrolytic temperature of each unit cell is regulated at an optimum operating temperature depending on the current density by adjusting the flow rate of the coolant without individually adjusting the flow rate of salt water supplied to the unit cell or the concentration of the salt water.

公开(公告)号：US20240092647A1

公开(公告)日：2024-03-21

申请号：US18517249

申请日：2023-11-22

申请人： Reed Advanced Materials Pty Ltd.

发明人： Yatendra Sharma

IPC分类号： C01D15/08 ,  B01D9/00 ,  B01D61/02 ,  B01J39/07 ,  B01J47/026 ,  C02F1/42 ,  C02F1/44 ,  C22B26/12 ,  C25B1/16

CPC分类号： C01D15/08 ,  B01D9/0022 ,  B01D61/027 ,  B01J39/07 ,  B01J47/026 ,  C02F1/42 ,  C02F1/442 ,  C22B26/12 ,  C25B1/16 ,  C01P2006/40 ,  C02F2101/101

摘要： A method (10) for the processing of lithium containing brines, the method comprising the method steps of:



(i) Passing a lithium containing brine (12) to a filtration step (14) to remove sulphates;
(ii) Passing a product (16) of step (i) to a first ion exchange step (18) to remove divalent impurities;
(iii) Passing a product (20) of step (ii) to a second ion exchange step (22) to remove boron impurities;
(iv) Passing a product (24) of step (iii) to an electrolysis step (26) to produce lithium hydroxide (28); and
(v) Passing a product (30) of step (iv) to a crystallisation step (32) that in turn provides a lithium hydroxide monohydrate product (34).

公开(公告)号：US11932955B2

公开(公告)日：2024-03-19

申请号：US17883983

申请日：2022-08-09

申请人： Mangrove Water Technologies LTD.

发明人： Saad Dara ,  Beniamin Zahiri

IPC分类号： C25B9/00 ,  B01D61/46 ,  B01D69/02 ,  C01D15/02 ,  C01D15/04 ,  C01D15/08 ,  C01F5/24 ,  C01F11/18 ,  C02F1/461 ,  C02F1/469 ,  C25B1/16 ,  C25B9/19 ,  C25B9/21 ,  C25B9/23 ,  C25B11/032 ,  C25B11/046 ,  C25B11/048 ,  C25B11/052 ,  C25B11/053 ,  C25B13/00 ,  C25C1/02 ,  C25C7/02 ,  C25C7/04 ,  C02F101/10 ,  C02F103/08 ,  C02F103/10

CPC分类号： C25B9/23 ,  B01D61/46 ,  B01D69/02 ,  C01D15/02 ,  C01D15/04 ,  C01D15/08 ,  C01F5/24 ,  C01F11/181 ,  C02F1/46109 ,  C02F1/4693 ,  C25B1/16 ,  C25B9/19 ,  C25B9/21 ,  C25B11/032 ,  C25B11/046 ,  C25B11/048 ,  C25B11/052 ,  C25B11/053 ,  C25B13/00 ,  C25C1/02 ,  C25C7/02 ,  C25C7/04 ,  B01D2313/345 ,  B01D2325/10 ,  B01D2325/36 ,  B01D2325/38 ,  B01D2325/42 ,  C02F2001/46142 ,  C02F2001/46166 ,  C02F2101/10 ,  C02F2103/08 ,  C02F2103/10

摘要： In this disclosure, a process of recycling acid, base and the salt reagents required in the Li recovery process is introduced. A membrane electrolysis cell which incorporates an oxygen depolarized cathode is implemented to generate the required chemicals onsite. The system can utilize a portion of the salar brine or other lithium-containing brine or solid waste to generate hydrochloric or sulfuric acid, sodium hydroxide and carbonate salts. Simultaneous generation of acid and base allows for taking advantage of both chemicals during the conventional Li recovery from brines and mineral rocks. The desalinated water can also be used for the washing steps on the recovery process or returned into the evaporation ponds. The method also can be used for the direct conversion of lithium salts to the high value LiOH product. The method does not produce any solid effluent which makes it easy-to-adopt for use in existing industrial Li recovery plants.

公开(公告)号：US11932550B2

公开(公告)日：2024-03-19

申请号：US17263648

申请日：2019-09-20

申请人： Reed Advanced Materials Pty Ltd.

发明人： Yatendra Sharma

IPC分类号： C01D15/08 ,  B01D9/00 ,  B01D61/02 ,  B01J39/07 ,  B01J47/026 ,  C02F1/42 ,  C02F1/44 ,  C22B26/12 ,  C25B1/16 ,  C02F101/10 ,  H01M4/04

CPC分类号： C01D15/08 ,  B01D9/0022 ,  B01D61/027 ,  B01J39/07 ,  B01J47/026 ,  C02F1/42 ,  C02F1/442 ,  C22B26/12 ,  C25B1/16 ,  C01P2006/40 ,  C02F2101/101 ,  C02F2101/108 ,  H01M4/0438

摘要： A method (10) for the processing of lithium containing brines, the method comprising the method steps of:



(i) Passing a lithium containing brine (12) to a filtration step (14) to remove sulphates;
(ii) Passing a product (16) of step (i) to a first ion exchange step (18) to remove divalent impurities;
(iii) Passing a product (20) of step (ii) to a second ion exchange step (22) to remove boron impurities;
(iv) Passing a product (24) of step (iii) to an electrolysis step (26) to produce lithium hydroxide (28); and
(v) Passing a product (30) of step (iv) to a crystallisation step (32) that in turn provides a lithium hydroxide monohydrate product (34).

公开(公告)号：US11859297B2

公开(公告)日：2024-01-02

申请号：US17883983

申请日：2022-08-09

申请人： Mangrove Water Technologies LTD.

发明人： Saad Dara ,  Beniamin Zahiri

IPC分类号： C25B9/00 ,  C25B9/23 ,  C25B11/032 ,  C25B11/052 ,  C25B9/21 ,  B01D61/46 ,  B01D69/02 ,  C01D15/02 ,  C01D15/04 ,  C01D15/08 ,  C01F5/24 ,  C01F11/18 ,  C02F1/461 ,  C02F1/469 ,  C25B1/16 ,  C25C1/02 ,  C25C7/02 ,  C25C7/04 ,  C25B11/048 ,  C25B11/046 ,  C25B9/19 ,  C25B11/053 ,  C25B13/00 ,  C02F101/10 ,  C02F103/08 ,  C02F103/10

CPC分类号： C25B9/23 ,  B01D61/46 ,  B01D69/02 ,  C01D15/02 ,  C01D15/04 ,  C01D15/08 ,  C01F5/24 ,  C01F11/181 ,  C02F1/4693 ,  C02F1/46109 ,  C25B1/16 ,  C25B9/19 ,  C25B9/21 ,  C25B11/032 ,  C25B11/046 ,  C25B11/048 ,  C25B11/052 ,  C25B11/053 ,  C25B13/00 ,  C25C1/02 ,  C25C7/02 ,  C25C7/04 ,  B01D2313/345 ,  B01D2325/10 ,  B01D2325/36 ,  B01D2325/38 ,  B01D2325/42 ,  C02F2001/46142 ,  C02F2001/46166 ,  C02F2101/10 ,  C02F2103/08 ,  C02F2103/10

摘要： In this disclosure, a process of recycling acid, base and the salt reagents required in the Li recovery process is introduced. A membrane electrolysis cell which incorporates an oxygen depolarized cathode is implemented to generate the required chemicals onsite. The system can utilize a portion of the salar brine or other lithium-containing brine or solid waste to generate hydrochloric or sulfuric acid, sodium hydroxide and carbonate salts. Simultaneous generation of acid and base allows for taking advantage of both chemicals during the conventional Li recovery from brines and mineral rocks. The desalinated water can also be used for the washing steps on the recovery process or returned into the evaporation ponds. The method also can be used for the direct conversion of lithium salts to the high value LiOH product. The method does not produce any solid effluent which makes it easy-to-adopt for use in existing industrial Li recovery plants.

公开(公告)号：US20230234848A1

公开(公告)日：2023-07-27

申请号：US17918978

申请日：2021-04-16

申请人： RECION TECHNOLOGIES, INC.

发明人： Salman SAFARIMOHSENABAD ,  Daniel S. ALESSI

IPC分类号： C01B25/30 ,  C01D15/02 ,  C01D15/08 ,  B01J39/02 ,  B01J39/10 ,  B01J49/53 ,  C22B26/12 ,  C22B3/42 ,  B01D15/36 ,  B01D15/20 ,  B01D15/42 ,  C25B1/14 ,  C25B1/16

CPC分类号： C01B25/306 ,  C01B25/303 ,  C01D15/02 ,  C01D15/08 ,  B01J39/02 ,  B01J39/10 ,  B01J49/53 ,  C22B26/12 ,  C22B3/42 ,  B01D15/362 ,  B01D15/203 ,  B01D15/426 ,  C25B1/14 ,  C25B1/16 ,  C01P2006/80

摘要： A method of producing lithium phosphate from a lithium source includes the step of (a) concentrating the lithium to produce a lithium concentrate, with an ion exchange sorbent, and (b) reacting the lithium concentrate with phosphate anions to produce lithium phosphate. The lithium phosphate may then be converted to lithium hydroxide or lithium 5 carbonate by reaction with calcium hydroxide or by electrolysis.

公开(公告)号：US11598011B2

公开(公告)日：2023-03-07

申请号：US17416413

申请日：2019-12-19

申请人： Mangrove Water Technologies LTD.

发明人： Saad Dara ,  Benjamin Zahiri

IPC分类号： C01D7/00 ,  C25B1/14 ,  C25B9/23 ,  C25B11/048 ,  C25C7/04 ,  C25B11/052 ,  C25B11/046 ,  C25B11/032 ,  C25B9/19 ,  C25B9/21 ,  C25B11/053 ,  B01D61/46 ,  B01D69/02 ,  C01D15/02 ,  C01D15/04 ,  C01D15/08 ,  C01F5/24 ,  C01F11/18 ,  C02F1/461 ,  C02F1/469 ,  C25B1/16 ,  C25B13/00 ,  C25C1/02 ,  C25C7/02 ,  C02F101/10 ,  C02F103/08 ,  C02F103/10

摘要： In this disclosure, a process of recycling acid, base and the salt reagents required in the Li recovery process is introduced. A membrane electrolysis cell which incorporates an oxygen depolarized cathode is implemented to generate the required chemicals onsite. The system can utilize a portion of the salar brine or other lithium-containing brine or solid waste to generate hydrochloric or sulfuric acid, sodium hydroxide and carbonate salts. Simultaneous generation of acid and base allows for taking advantage of both chemicals during the conventional Li recovery from brines and mineral rocks. The desalinated water can also be used for the washing steps on the recovery process or returned into the evaporation ponds. The method also can be used for the direct conversion of lithium salts to the high value LiOH product. The method does not produce any solid effluent which makes it easy-to-adopt for use in existing industrial Li recovery plants.