公开(公告)号：US20240426008A1

公开(公告)日：2024-12-26

申请号：US18340200

申请日：2023-06-23

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Zhihao Shang ,  Xueliang Dong ,  Dennis F. van der Vliet

IPC: C25B13/02 ,  C25B9/23 ,  C25B11/052 ,  C25B11/077 ,  C25B11/081 ,  C25B13/07 ,  C25B13/08 ,  H01M4/92 ,  H01M8/1004 ,  H01M8/1039

Abstract: Composite proton exchange membranes are described. The composite proton-exchange membranes comprise three layers including a proton exchange membrane layer, a continuous nonporous organic-inorganic composite coating layer, and a continuous nonporous cross-linked polyelectrolyte multilayer coating. Catalyst coated membranes incorporating the composite proton exchange membranes and methods of making the composite proton exchange membranes are also described.

公开(公告)号：US20240426009A1

公开(公告)日：2024-12-26

申请号：US18585222

申请日：2024-02-23

Applicant: UOP LLC

Inventor： Zhihao Shang ,  Shurong Yang ,  Dennis F. van der Vliet ,  Chunqing Liu

IPC: C25B13/08 ,  C25B9/23

Abstract: Proton exchange membranes are described. The proton exchange membranes comprise a reinforced membrane, a continuous nonporous hydrogen recombination catalyst coating layer comprising a mixture of hydrogen recombination catalyst and a proton conducting ionomer, and a continuous nonporous cross-linked polyelectrolyte multilayer coating comprising alternating layers of a polycation polymer and a polyanion polymer. Catalyst coated membranes incorporating the proton exchange membranes and methods of making the proton exchange membranes are also described.

公开(公告)号：US20250059620A1

公开(公告)日：2025-02-20

申请号：US18451327

申请日：2023-08-17

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Zhihao Shang

IPC: C22B11/00 ,  B09B3/40 ,  B09B3/70 ,  C22B3/22 ,  C22B7/00

Abstract: A method for recycling anode and/or cathode catalyst from the catalyst coated membranes comprising proton exchange membrane, a continuous nonporous cross-linked polyelectrolyte multilayer coating comprising alternating layers of a polycation polymer and a polyanion polymer, an anode coating layer comprising anode catalyst particles, a cathode coating layer comprising cathode catalyst particles, and optionally a second continuous nonporous cross-linked polyelectrolyte multilayer coating between the second surface of the proton exchange membrane and the cathode coating layer. The cross-linked polyelectrolyte multilayer coating between the proton exchange membrane and the anode and/or cathode catalyst coating layer is dissolved in an aqueous solution with a pH of greater than 7. The catalyst coated membrane is delaminated, and the anode and/or cathode catalyst is recovered.

公开(公告)号：US20240209532A1

公开(公告)日：2024-06-27

申请号：US18459615

申请日：2023-09-01

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Shurong Yang ,  Xueliang Dong ,  Dennis F. van der Vliet ,  Zhihao Shang ,  Matthew J. Schmidt

IPC: C25B13/08 ,  C25B9/23 ,  C25B11/052 ,  C25B11/081

CPC classification number: C25B13/08 ,  C25B9/23 ,  C25B11/052 ,  C25B11/081

Abstract: A new multilayer ion-exchange membrane comprising an ion-exchange membrane layer, a catalyst layer coated on a first surface of the ion exchange membrane, a first polyelectrolyte multilayer coated on the catalyst layer, and optionally a second polyelectrolyte multilayer coated on a second surface of the ion-exchange membrane for electrolysis applications has been developed.