公开(公告)号：US12157087B2

公开(公告)日：2024-12-03

申请号：US18463214

申请日：2023-09-07

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Xueliang Dong ,  Jeremy Webb

IPC: B01D53/22 ,  B01D61/36 ,  B01D67/00 ,  B01D69/02 ,  B01D69/08 ,  B01D69/12 ,  B01D71/64 ,  B01D71/68 ,  B01D71/70 ,  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.

公开(公告)号：US20240360574A1

公开(公告)日：2024-10-31

申请号：US18306609

申请日：2023-04-25

Applicant: UOP LLC

Inventor： Zhanyong Li ,  Chunqing Liu ,  Stacey Deptuch ,  Saad Intikhab

IPC: C25B11/073 ,  C25B1/04 ,  C25B11/052

CPC classification number: C25B11/073 ,  C25B1/04 ,  C25B11/052

Abstract: A family of catalysts for oxygen evolution reaction (OER) in alkaline condition is disclosed. The catalysts utilize elements which are abundant on earth, leading to lower costs compared to IrO2 catalysts. The catalysts can be used in the anode of an anion exchange membrane-based water electrolyzer. The family of new catalysts comprises Ni, Fe, M, B, and O, where M is a metal from Group VIB, Group VIII, and elements 57-71 of the Periodic Table. The catalyst has a layered double hydroxide structure. Methods of making the catalysts are also described.

公开(公告)号：US20240191373A1

公开(公告)日：2024-06-13

申请号：US18064023

申请日：2022-12-09

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Xueliang Dong ,  Dennis F. van der Vliet ,  Saad Intikhab ,  Shurong Yang

IPC: C25B11/075 ,  C25B11/055 ,  C25B13/04

CPC classification number: C25B11/075 ,  C25B11/055 ,  C25B13/04

Abstract: Catalyst ink formulas for the preparation of CCMs are described. The catalyst ink formulas comprise a catalyst, an ionomer, a solvent, and a porogen soluble in the solvent. The catalyst ink formula may also comprise an additive, such as an electron conductive polymer. The anode catalyst coating layer or both the anode and the cathode catalyst coating layers prepared from the catalyst ink formula comprises uniformly distributed nanopores that allow easy gas removal and uniform water feed distribution, which will avoid or reduce the direct energy losses for the electrolyzers. Catalyst coated membranes and methods of making a catalyst coated membranes are also described.

公开(公告)号：US11955678B2

公开(公告)日：2024-04-09

申请号：US17474200

申请日：2021-09-14

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Chaoyi Ba ,  Xueliang Dong

IPC: H01M8/18 ,  H01M4/86 ,  H01M4/88

CPC classification number: H01M8/188 ,  H01M4/8657 ,  H01M4/8853 ,  H01M8/18 ,  H01M2004/8684 ,  H01M2300/0002

Abstract: Methods to improve redox flow battery performance with improved CE, reduced electrolyte solution crossover, and simplified solution refreshing process have been developed. The methods include controlling the pre-charging degree and conditions to allow high quality metal plating (ductile and uniform), for example, Fe(O), on the negative electrode. Control of the pre-charging conditions can be combined with increasing the concentration of metal ions compared to existing systems, while maintaining the same concentration in both the negative and positive electrolytes, or increasing the concentration of metal ions in the negative electrolyte so that the negative electrolyte has a higher concentration of metal ions than the positive electrolyte.

公开(公告)号：US20240084466A1

公开(公告)日：2024-03-14

申请号：US18313719

申请日：2023-05-08

Applicant: UOP LLC

Inventor： Zhanyong Li ,  Chunqing Liu ,  Shurong Yang ,  Dennis F. van der Vliet ,  Gavin P. Towler ,  Jeffery C. Bricker

IPC: C25B11/091 ,  C01G55/00 ,  C25B11/075

CPC classification number: C25B11/091 ,  C01G55/004 ,  C25B11/075 ,  C01P2004/04 ,  C01P2004/24 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/40 ,  C25B1/04

Abstract: An iridium-based catalyst and method of making the catalyst are described. The catalyst comprises a catalytic material comprising iridium oxide or a mixture of iridium and iridium oxide nanoplates. It may have a BET surface area of at least 50 m2/g and a pore volume of at least 0.10 cc/g. The nanoplates are less than 50 nm thick. The catalyst is made using organic and inorganic structure directing agents.

公开(公告)号：US20240068116A1

公开(公告)日：2024-02-29

申请号：US18319762

申请日：2023-05-18

Applicant: UOP LLC

Inventor： Xueliang Dong ,  Chunqing Liu ,  Nicole Karns

IPC: C25B13/02 ,  C25B13/08

CPC classification number: C25B13/02 ,  C25B13/08 ,  C25B1/04

Abstract: A porous ion-permeable separator membrane with an asymmetric pore structure in which the top of the membrane (the side opposite the porous substrate) has smaller pores than the pores in the rest of the polymer coating (i.e., closer to the porous substrate) is described. The porous ion-permeable asymmetric composite membrane comprises polymers, inorganic particles, and a porous substrate which is stable at a pH of 8 or higher.

公开(公告)号：US11837767B2

公开(公告)日：2023-12-05

申请号：US17388962

申请日：2021-07-29

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Xueliang Dong ,  Chaoyi Ba ,  Stuart R. Miller ,  James H. K. Yang

IPC: H01M8/18 ,  H01M8/08

CPC classification number: H01M8/188 ,  H01M8/08 ,  H01M2300/0005

Abstract: Stable and high performance positive and negative electrolytes compositions to be used in redox flow battery systems are described. The redox flow battery system, comprises: at least one rechargeable cell comprising a positive electrolyte, a negative electrolyte, and an ionically conductive membrane positioned between the positive electrolyte and the negative electrolyte, the positive electrolyte in contact with a positive electrode, and the negative electrolyte in contact with a negative electrode. The positive electrolyte consists essentially of water, a first amino acid, an inorganic acid, an iron precursor, a supporting electrolyte, and optionally a boric acid. The negative electrolyte consists essentially of water, the iron precursor, the supporting electrolyte, and a negative electrolyte additive. The iron precursor is FeCl2, FeCl3, FeSO4, Fe2(SO4)3, FeO, Fe, Fe2O3, or combinations thereof. The supporting electrolyte is LiCl, NaCl, Na2SO4, KCl, NH4Cl, or combinations thereof. The negative electrolyte additive is boric acid or a combination of the boric acid and a second amino acid.

公开(公告)号：US20230102700A1

公开(公告)日：2023-03-30

申请号：US17474198

申请日：2021-09-14

Applicant: UOP LLC

Inventor： Chaoyi Ba ,  Chunqing Liu ,  Xueliang Dong

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

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：US10569218B2

公开(公告)日：2020-02-25

申请号：US15675436

申请日：2017-08-11

Applicant: UOP LLC

Inventor： Chunqing Liu

IPC: B01D53/22 ,  C01B3/50 ,  C08J7/04 ,  C10L3/10 ,  B01D71/32 ,  B01D71/68 ,  B01D71/16 ,  B01D71/64 ,  B01D71/50 ,  B01D69/12 ,  B01D71/70

Abstract: Combining the features of a glassy polymeric membrane and a rubbery polymeric membrane into a multiple membrane system provides a system having the advantages of both of the types of membranes. The membranes may be in any order in the system and multiple glassy polymeric membranes and multiple rubbery polymeric membranes may be used.

公开(公告)号：US10507405B1

公开(公告)日：2019-12-17

申请号：US16024236

申请日：2018-06-29

Applicant: UOP LLC

Inventor： Stanley J. Frey ,  Chunqing Liu ,  Trung Pham

IPC: B01D3/14 ,  B01D61/36 ,  C07C7/04 ,  C07C7/144 ,  C07C11/06 ,  C07C11/08 ,  C07C9/08 ,  C07C9/10

Abstract: Process for separating a highly pure propylene product from a liquefied petroleum gas stream is disclosed, which eliminates a C3 splitter having over 120 trays and the additional equipment that a C3 splitter requires. The process includes passing a feed stream to a dividing wall column to produce an overhead stream, a first side draw stream, a second side draw stream, and a product stream. The first side draw stream is passed to a treatment unit to produce a treated stream. The treated stream is passed to a membrane unit and a permeate stream is passed from the membrane unit to produce a polymer grade propylene stream.