公开(公告)号：US20140100406A1

公开(公告)日：2014-04-10

申请号：US13645782

申请日：2012-10-05

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Gregory F. Maher

IPC: B01D69/00

CPC classification number: B01D61/007 ,  B01D67/0088 ,  B01D69/10 ,  B01D69/141 ,  B01D71/02 ,  B01D71/021 ,  B01D71/024 ,  B01D71/62 ,  B01D2323/28 ,  C07C7/144 ,  C07C15/08

Abstract: A separation membrane is described. The separation membrane comprises a porous inorganic membrane, the pores of the inorganic membrane being coated with a polybenzoxazole polymer coating. Methods of making the separation membrane and methods of separating xylenes using the separation membrane are also described.

Abstract translation: 描述分离膜。 分离膜包括多孔无机膜，无机膜的孔用聚苯并恶唑聚合物涂层涂覆。 还描述了制备分离膜的方法和使用分离膜分离二甲苯的方法。

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：US20240222676A1

公开(公告)日：2024-07-04

申请号：US18462617

申请日：2023-09-07

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Michael G. Baddeloo ,  Hunter D. Smith ,  Jinfeng Wu

IPC: H01M8/18 ,  H01M8/1044 ,  H01M8/1048 ,  H01M8/1053 ,  H01M8/1067

CPC classification number: H01M8/188 ,  H01M8/1044 ,  H01M8/1048 ,  H01M8/1053 ,  H01M8/1067

Abstract: An ionically conductive thin film composite (TFC) membrane is described. The low cost, high performance TFC membrane comprises a first micropous support membrane, a hydrophilic ionomeric polymer coating layer on a first surface of the microporous support membrane, and a second microporous support membrane on the surface of the hydrophilic ionomeric polymer coating layer opposite the first microporous support membrane. The hydrophilic ionomeric polymer coating layer is ionically conductive. The ionomeric polymer can also be present in the micropores of the first microporous support membrane. Methods of making the TFC membranes and redox flow battery systems incorporating the TFC membranes are also described.

公开(公告)号：US11980879B2

公开(公告)日：2024-05-14

申请号：US17474198

申请日：2021-09-14

Applicant: UOP LLC

Inventor： Chaoyi Ba ,  Chunqing Liu ,  Xueliang Dong

IPC: H01M8/04 ,  B01J41/13 ,  C08G73/06 ,  C08J5/22 ,  C25B1/04 ,  C25B11/032 ,  C25B13/08 ,  H01M8/1004 ,  H01M8/103

CPC classification number: B01J41/13 ,  C08G73/0627 ,  C08J5/2231 ,  C25B1/04 ,  C25B11/032 ,  C25B13/08 ,  H01M8/1004 ,  H01M8/103 ,  C08J2379/02

Abstract: Anion exchange polymers having high OH− conductivity, chemical stability, and mechanical stability have been developed for use in AEMs. The anion exchange polymers have stable hydrophobic polymer backbones, stable hydrophilic quaternary ammonium cationic groups, and hydrophilic phenolic hydroxyl groups on the polymer side chains. The polymers have polymer backbones free of ether bonds, hydrophilic polymer side chains, and piperidinium ion-conducting functionality, which enables efficient and stable operation in water or CO2 electrolysis, redox flow battery, and fuel cell applications. The polymer comprises a plurality of repeating units of formula (I)




Anion exchange membranes and membrane electrode assemblies incorporating the anion exchange polymers are also described.

公开(公告)号：US11970589B2

公开(公告)日：2024-04-30

申请号：US17162421

申请日：2021-01-29

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Xueliang Dong ,  Chaoyi Ba

IPC: C08J5/22 ,  C08K3/36 ,  H01M8/1069

CPC classification number: C08J5/2225 ,  C08K3/36 ,  H01M8/1069 ,  C08J2205/042 ,  C08J2205/044

Abstract: A composite proton conductive membrane, comprising an inorganic filler having covalently bonded acidic functional groups and a high surface area of at least 150 m2/g; and a water insoluble ionically conductive polymer. This membrane provides advantages over traditional polymeric proton conductive membranes for redox flow battery, fuel cell, and electrolysis applications include: 1) enhanced proton conductivity/permeance due to the formation of additional nanochannels for proton conducting; 2) improved proton/electrolyte selectivity for redox flow battery application; 3) reduced membrane swelling and gas or electrolyte crossover; 4) improved chemical stability; 5) increased cell operation time with stable performance, and 6) reduced membrane cost.

公开(公告)号：US11931698B2

公开(公告)日：2024-03-19

申请号：US17951380

申请日：2022-09-23

Applicant: UOP LLC

Inventor： Xueliang Dong ,  Chunqing Liu ,  Howie Tran

IPC: B01D53/22 ,  B01D69/02 ,  B01D69/10 ,  B01D69/12 ,  B01D71/52 ,  B01D71/56 ,  B01D71/80 ,  C10L3/10

CPC classification number: B01D69/125 ,  B01D53/226 ,  B01D53/228 ,  B01D69/02 ,  B01D69/105 ,  B01D71/52 ,  B01D71/56 ,  B01D71/80 ,  C10L3/103 ,  C10L3/104 ,  B01D2325/022 ,  C10L2290/548

Abstract: A thin film composite gas separation membrane comprising a polyether block amide copolymer coating layer and a nanoporous asymmetric support membrane with nanopores on the skin layer surface of the support membrane and gelatin polymers inside the nanopores on the skin layer surface of the support membrane. A method for making the thin film composite gas separation membrane is provided as well as the use of the membrane for a variety of separations such as separations of hydrogen sulfide and carbon dioxide from natural gas, carbon dioxide removal from flue gas, fuel gas conditioning, hydrogen/methane, polar molecules, and ammonia mixtures with methane, nitrogen or hydrogen and other light gases separations, but also for natural gas liquids recovery and hydrogen sulfide and carbon dioxide removal from natural gas in a single step.

公开(公告)号：US20230250545A1

公开(公告)日：2023-08-10

申请号：US18046587

申请日：2022-10-14

Applicant: UOP LLC

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

IPC: C25B15/021 ,  C25B1/04 ,  C25B9/21 ,  C25B9/23 ,  C25B11/081 ,  C25B13/02 ,  C25B13/04

CPC classification number: C25B15/021 ,  C25B1/04 ,  C25B9/21 ,  C25B9/23 ,  C25B11/081 ,  C25B13/02 ,  C25B13/04

Abstract: A start-up process for conditioning an electrolysis system containing ionically conductive membrane, such as a polyelectrolyte multilayer coated proton exchange membranes, to reduce the break-in period is described. The conditioning involves heating the electrolysis feed, the electrolysis system, or both at a temperature above the desired operating temperature to achieve faster startup. In some cases, the voltage is controlled to avoid damage to the sample.

公开(公告)号：US20230124791A1

公开(公告)日：2023-04-20

申请号：US17451226

申请日：2021-10-18

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Xueliang Dong ,  Chaoyi Ba

IPC: H01M8/1053 ,  H01M8/18

Abstract: A polyelectrolyte multilayer membrane has been developed for redox flow batteries and other electrochemical reaction applications. The polyelectrolyte multilayer membrane comprises an ionically conductive thin film composite membrane comprising a microporous support membrane, a hydrophilic ionomeric polymer coating layer on the surface of the microporous support membrane, and a polyelectrolyte multilayer coating on the second surface of the hydrophilic ionomeric polymer coating layer (the side opposite the support membrane). The polyelectrolyte multilayer coating comprises alternating layers of a polycation polymer and a polyanion polymer. Methods of making the polyelectrolyte multilayer membrane and redox flow battery system including the polyelectrolyte multilayer membrane are also described.

公开(公告)号：US20230018173A1

公开(公告)日：2023-01-19

申请号：US17951380

申请日：2022-09-23

Applicant: UOP LLC

Inventor： Xueliang Dong ,  Chunqing Liu ,  Howie Tran

IPC: B01D69/12 ,  B01D71/80 ,  B01D71/56 ,  B01D71/52 ,  B01D69/10 ,  B01D53/22 ,  C10L3/10 ,  B01D69/02

Abstract: A thin film composite gas separation membrane comprising a polyether block amide copolymer coating layer and a nanoporous asymmetric support membrane with nanopores on the skin layer surface of the support membrane and gelatin polymers inside the nanopores on the skin layer surface of the support membrane. A method for making the thin film composite gas separation membrane is provided as well as the use of the membrane for a variety of separations such as separations of hydrogen sulfide and carbon dioxide from natural gas, carbon dioxide removal from flue gas, fuel gas conditioning, hydrogen/methane, polar molecules, and ammonia mixtures with methane, nitrogen or hydrogen and other light gases separations, but also for natural gas liquids recovery and hydrogen sulfide and carbon dioxide removal from natural gas in a single step.

公开(公告)号：US20220184550A1

公开(公告)日：2022-06-16

申请号：US17121384

申请日：2020-12-14

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Xueliang Dong ,  Jeremy Nolan Webb

IPC: B01D53/22 ,  B01D61/36 ,  B01D71/64 ,  B01D71/68 ,  B01D69/02 ,  B01D69/08 ,  B01D69/12 ,  B01D67/00 ,  C08J5/18 ,  C10L3/10

Abstract: A low cost, high selectivity asymmetric polyimide/polyethersulfone (PES) blend hollow fiber membrane, a method of making the membrane and its use for a variety of liquid, gas, and vapor separations such as deep desulfurization of gasoline and diesel fuels, ethanol/water separations, pervaporation dehydration of aqueous/organic mixtures, CO2/CH4, CO2/N2, H2/CH4, He/CH4, O2/N2, H2S/CH4, olefin/paraffin, iso/normal paraffins separations, and other light gas mixture separations. The polyimide/PES blend hollow fiber membrane is fabricated from a blend of a polyimide polymer and PES and showed surprisingly unique gas separation property with higher selectivities than either the polyimide hollow fiber membrane without PES polymer or the PES hollow fiber membrane without PES polymer for gas separations such as for H2/CH4, He/CH4, H2S/CH4, CO2/CH4 separations.