公开(公告)号：US12090467B2

公开(公告)日：2024-09-17

申请号：US17859111

申请日：2022-07-07

Applicant: NANJING TECH UNIVERSITY ,  NANJING GEKOF INSTITUTE OF ENVIRONMENTAL PROTECTION TECHNOLOGY & EQUIPMENT CO., LTD.

Inventor： Haitao Xu ,  Wenyu Ji ,  Mutao Xu ,  Qijie Jin ,  Mingbo Li ,  Jing Song ,  Meng Xu

IPC: B01J37/03 ,  B01D8/00 ,  B01D53/86 ,  B01J23/10 ,  B01J35/00 ,  B01J35/23 ,  B01J37/00 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08 ,  B01J37/20 ,  C01B17/04

CPC classification number: B01J23/10 ,  B01D8/00 ,  B01D53/8609 ,  B01J35/23 ,  B01J37/0036 ,  B01J37/009 ,  B01J37/0221 ,  B01J37/0236 ,  B01J37/031 ,  B01J37/04 ,  B01J37/08 ,  B01J37/20 ,  C01B17/0486 ,  B01D2255/2061 ,  B01D2255/2063

Abstract: The present invention provides a catalyst for catalytic reduction of an industrial flue gas SO2 with CO to prepare sulfur, a method for preparing the same and use thereof. A CeO2 nanocarrier is prepared by using a hydrothermal method, La and Y are loaded as active components, pre-sulfurization is conducted with 6% of SO2 and 3% of CO, and finally, the catalyst is prepared. The catalyst has high reactivity and sulfur selectivity and strong stability. The by-product sulfur generated by the reaction is recovered with a solvent CS2, and the solvent CS2 is recovered by using a distillation process. The preparation method is low in cost, causes no secondary pollution and is high in sulfur recovery rate. The problem of low sulfur production in China at present is solved.

公开(公告)号：US20240123412A1

公开(公告)日：2024-04-18

申请号：US18337452

申请日：2023-06-20

Applicant: NANJING TECH UNIVERSITY

Inventor： Gongping LIU ,  Jiangying LIU ,  Wanqin JIN ,  Yang PAN

IPC: B01D71/80 ,  B01D53/22 ,  B01D67/00 ,  B01D69/12 ,  B01D71/52 ,  B01D71/56 ,  B01D71/70 ,  B01J20/26 ,  B01J20/28 ,  B01J20/30 ,  C08G77/46

CPC classification number: B01D71/80 ,  B01D53/228 ,  B01D67/0006 ,  B01D67/0011 ,  B01D67/0013 ,  B01D67/009 ,  B01D69/1214 ,  B01D71/5211 ,  B01D71/56 ,  B01D71/701 ,  B01J20/267 ,  B01J20/28035 ,  B01J20/3085 ,  C08G77/46 ,  B01D2323/219 ,  B01D2323/30

Abstract: The present disclosure relates to a polyether block polyamide/polydimethylsiloxane (PDMS) composite membrane for gas separation, and a preparation method and use thereof, and belongs to the technical field of membrane separation. In the present disclosure, an amphoteric copolymer PDMS-polyethylene oxide (PEO) (PDMS-b-PEO) is introduced into an intermediate layer to adjust the interfacial binding performance, thereby promoting preparation of an ultra-thin polyether block polyamide composite membrane. Studies have shown that the surface enrichment of PEO segments not only inhibits a dense SiOx layer formed due to a plasma treatment of a PDMS intermediate layer, but also provides additional hydrophilic sites and interfacial compatibility for the subsequent selective layer. The use of PDMS-b-PEO in an intermediate layer allows the successful preparation of a selective layer with a thickness of about 50 nm.

公开(公告)号：US11878267B2

公开(公告)日：2024-01-23

申请号：US18165235

申请日：2023-02-06

Applicant: NANJING TECH UNIVERSITY

Inventor： Gongping Liu ,  Guining Chen ,  Wanqin Jin

IPC: B01D53/22 ,  B01D67/00 ,  B01D71/52 ,  B01D69/02 ,  B01D69/14 ,  B01D71/02 ,  B01J20/22 ,  B01J20/28

CPC classification number: B01D53/228 ,  B01D67/00793 ,  B01D67/00931 ,  B01D69/02 ,  B01D69/148 ,  B01D71/028 ,  B01D71/5211 ,  B01J20/226 ,  B01J20/28026 ,  B01D2253/204 ,  B01D2256/16 ,  B01D2257/504 ,  B01D2323/081 ,  B01D2323/12 ,  B01D2323/14 ,  B01D2323/2189 ,  B01D2323/36 ,  B01D2323/50 ,  B01D2325/04

Abstract: M(SiF6)(pyz)3 (M=Cu, Zn, Co, or Ni) has a pore size between a size of H2 and a size of CO2, and thus exhibits prominent screening performance for H2/CO2. A strong interaction between Cu(SiF6)(bpy)2 and a CO2 molecule can hinder the transport of the CO2 molecule. The above two MOFs both can achieve the H2/CO2 separation. By preparing a dense MSiF6/polymer layer, MSiF6 is uniformly dispersed in the polymer and is fixed, and subsequently, MSiF6 is converted into M(SiF6)(pyz)3 or Cu(SiF6)(bpy)2 by interacting with an organic ligand. Through vapor-induced in-situ conversion, MOF particles can be well dispersed without interface defects between the MOF particles and the polymer. Even at a doping amount of 80%, the mechanical flexibility and stability of the MMM can still be retained.

公开(公告)号：US11850555B2

公开(公告)日：2023-12-26

申请号：US17218181

申请日：2021-03-31

Applicant: NANJING TECH UNIVERSITY

Inventor： Shipeng Sun ,  Zhenyuan Wang ,  Zhengjun Fu ,  Mengmeng Tang ,  Dandan Shao ,  Weihong Xing

IPC: B01D67/00 ,  B01D69/06 ,  B01D71/56 ,  B01D71/64 ,  B01D71/68 ,  B01D61/02 ,  B01D61/14 ,  B01D69/08 ,  B01D69/12 ,  B01D71/78 ,  C02F1/44 ,  D01D5/24 ,  D01D5/34 ,  D01F1/08 ,  B01D71/06 ,  B01D53/22 ,  B01D61/00 ,  B01D61/36 ,  D01D5/06

CPC classification number: B01D67/0016 ,  B01D61/025 ,  B01D61/027 ,  B01D61/147 ,  B01D67/0002 ,  B01D67/0013 ,  B01D69/06 ,  B01D69/08 ,  B01D69/088 ,  B01D69/12 ,  B01D69/125 ,  B01D71/06 ,  B01D71/56 ,  B01D71/68 ,  B01D71/78 ,  C02F1/448 ,  D01D5/24 ,  D01D5/34 ,  D01F1/08 ,  B01D53/228 ,  B01D61/002 ,  B01D61/02 ,  B01D61/14 ,  B01D61/145 ,  B01D61/362 ,  B01D2323/12 ,  B01D2323/38 ,  C02F1/441 ,  C02F1/442 ,  C02F1/444 ,  C02F1/445 ,  D01D5/06

Abstract: A dual-layer membrane and a method for preparing thereof. By adding a modifying monomer containing an active group and a characteristic group to a dope solution or spinning solution during the preparation of the dual-layer membrane, the grafting reaction occurs between the active group of the monomer and the polymer in the dope solution or spinning solution, and the intermolecular interaction with other polymers is enhanced by the characteristic group of the monomer, to improve the miscibility between the polymers. The method is suitable for preparing both a dual-layer flat sheet membrane and a dual-layer hollow fiber membrane, and can realize the preparation of a dual-layer membrane with an interpenetrated structure at the interface under mild preparation conditions.

公开(公告)号：US11845708B2

公开(公告)日：2023-12-19

申请号：US17486807

申请日：2021-09-27

Applicant: NANJING TECH UNIVERSITY

Inventor： Xiaoqiang Chen ,  Tingwen Wei ,  Jing Wang ,  Yanyan Wang

IPC: C07C227/04 ,  C07D209/20 ,  C07D235/22 ,  C07D403/06

CPC classification number: C07C227/04 ,  C07D209/20 ,  C07D235/22 ,  C07D403/06

Abstract: The present disclosure provides a method for photocleavage of an amide bond, the method has mild reaction conditions and can realize the cleavage of amide bonds by using light. The method comprises the following steps: subjecting 2,4-dinitrofluorobenzene to a reaction with an amino group of a substance represented by structural formula I with an α-amino acid at the end to produce a compound 1 represented by structural formula II; then under light irradiation, subjecting the compound 1 to a cleavage reaction of amide bond;




Wherein, R1 is the side chain group of α-amino acid; R2 is: aryl, aliphatic hydrocarbon, —CH(R)—COOH or polypeptide.

公开(公告)号：US20230340702A1

公开(公告)日：2023-10-26

申请号：US18115357

申请日：2023-02-28

Applicant: NANJING TECH UNIVERSITY

Inventor： ZHIRONG WANG ,  YUXIN ZHOU ,  JUNLING WANG ,  YUHUI XIA ,  HAOZE YANG ,  WENXI WANG ,  PENG DONG ,  FAN YI

IPC: D01F8/16 ,  D01D5/34 ,  D01F8/08 ,  D01D1/02 ,  D01F1/07 ,  D01D7/00 ,  D01D5/00 ,  H01M10/0525 ,  H01M50/383 ,  H01M10/653

CPC classification number: D01F8/16 ,  D01D5/34 ,  D01F8/08 ,  D01D1/02 ,  D01F1/07 ,  D01D7/00 ,  D01D5/0038 ,  H01M10/0525 ,  H01M50/383 ,  H01M10/653 ,  D10B2401/04 ,  D10B2331/10 ,  D10B2321/10 ,  D10B2505/00

Abstract: The present disclosure discloses a phase-change flame-retardant fiber material for thermal management of a lithium ion battery in a closed space and a preparation method. The phase-change flame-retardant fiber material is prepared in a coaxial electrostatic spinning manner and includes a composite phase-change fiber material PASA-TPU at a core part and a flame-retardant fiber material TB-PAN wrapping a surface of the core part. The composite phase-change fiber material is well wrapped with the flame-retardant fiber material, and the lithium ion battery wrapping the whole phase-change flame-retardant fiber material in the closed space is subjected to charge-discharge cycle; the result shows that the surface temperature of the battery can be effectively reduced by about 20° C. by the material, and the material can effectively play a role in multiple cycle processes; the whole material has an excellent and stable heat absorption effect, and has no leakage and collapse; and the phase-change flame-retardant fiber material only has thermal shrinkage and blackening phenomena and is not combusted after being ignited by open fire for over 20 s. Therefore, the phase-change flame-retardant fiber material of the present disclosure has a relatively good flame-retardant effect compared with other phase-change materials.

公开(公告)号：US11773045B2

公开(公告)日：2023-10-03

申请号：US18024730

申请日：2022-01-19

Applicant: Nanjing Tech University

Inventor： Yufeng Li ,  Hongjun Zhu ,  Hongfei Ma ,  Hongzhong Bu ,  Jieqing Wu ,  Jiefan Gu ,  Jiwei Chen ,  Haoyue Zhang ,  Chen Wang

IPC: C07C51/16 ,  C07C45/32 ,  C07C201/12 ,  C07C253/30

CPC classification number: C07C51/16 ,  C07C45/32 ,  C07C201/12 ,  C07C253/30

Abstract: Provided is a photo-oxidation reaction of benzylic C—H bonds of an aromatic compound under the catalysis of an acid catalyst. The method aims to synthesize aromatic acids and acetophenones. The acid catalyst is one of Bronsted acids, including one or a mixture of two or more selected from the group consisting of hydrochloric acid, phosphoric acid, sulfuric acid, p-toluenesulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, trifluoroacetic acid, and potassium hydrogen sulfate, as well as N-propylsulfonate pyridinium hydrogensulfate, N-butylsulfonate pyridinium hydrogensulfate, N-propylsulfonate pyridinium trifluoromethanesulfonate, N-butylsulfonate pyridinium trifluoromethanesulfonate, N-propylsulfonate pyridinium tetrafluoroborate, and N-butylsulfonate pyridinium tetrafluoroborate. The oxidation reaction is conducted under mild conditions (normal temperature and pressure) using air or oxygen as the oxidant in the presence of recyclable catalyst and solvent.

公开(公告)号：US11766640B2

公开(公告)日：2023-09-26

申请号：US18001092

申请日：2022-03-23

Applicant: NANJING TECH UNIVERSITY

Inventor： Yong Wang ,  Dinglei Zhong ,  Jiemei Zhou

IPC: B01D67/00 ,  B01D71/52 ,  B01D69/08 ,  B01D71/68 ,  B01D71/80 ,  D01D5/24 ,  D01F1/08

CPC classification number: B01D67/0027 ,  B01D67/002 ,  B01D69/08 ,  B01D71/5211 ,  B01D71/68 ,  B01D71/80 ,  D01D5/24 ,  D01F1/08

Abstract: The disclosure provides a method for preparing a hollow fiber membrane by melt spinning-stretching and selective swelling, including: preparing a nascent hollow fiber by melt spinning in an inert gas protective atmosphere by using an amphiphilic block copolymer as a film forming material, and stretching the nascent hollow fiber in the cooling process, a stretch rate being controlled at 200-540 mm/min, and a stretch ratio being controlled at 150-600%; immersing the obtained hollow fiber in a swelling solvent, and treating the hollow fiber in a water bath at 65° C. for 1 h; and then transferring the hollow fiber into a long-chain alkane solvent, treating the hollow fiber at the same temperature for 1-12 h, and after the completion of the treatment, immediately taking out the hollow fiber and drying the hollow fiber to obtain the hollow fiber membrane with a bicontinuous porous structure. By combining the melt spinning-stretching and the selective swelling, the method of the disclosure can synchronously and continuously improve the permeability and selectivity of the hollow fiber membrane. The treatment in the long-chain alkane solvent can make the polar chain excessively enriched on the surface of the membrane migrate inward, thereby improving the performance of the hollow fiber membrane.

公开(公告)号：US20230242470A1

公开(公告)日：2023-08-03

申请号：US18024730

申请日：2022-01-19

Applicant: Nanjing Tech University

Inventor： Yufeng Li ,  Hongjun Zhu ,  Hongfei Ma ,  Hongzhong Bu ,  Jieqing Wu ,  Jiefan Gu ,  Jiwei Chen ,  Haoyue Zhang ,  Chen Wang

IPC: C07C51/16 ,  C07C45/32 ,  C07C201/12 ,  C07C253/30

CPC classification number: C07C51/16 ,  C07C45/32 ,  C07C201/12 ,  C07C253/30

Abstract: Provided is a photo-oxidation reaction of benzylic C—H bonds of an aromatic compound under the catalysis of an acid catalyst. The method aims to synthesize aromatic acids and acetophenones. The acid catalyst is one of Bronsted acids, including one or a mixture of two or more selected from the group consisting of hydrochloric acid, phosphoric acid, sulfuric acid, p-toluenesulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, trifluoroacetic acid, and potassium hydrogen sulfate, as well as N-propylsulfonate pyridinium hydrogensulfate, N-butylsulfonate pyridinium hydrogensulfate, N-propylsulfonate pyridinium trifluoromethanesulfonate, N-butylsulfonate pyridinium trifluoromethanesulfonate, N-propylsulfonate pyridinium tetrafluoroborate, and N-butylsulfonate pyridinium tetrafluoroborate. The oxidation reaction is conducted under mild conditions (normal temperature and pressure) using air or oxygen as the oxidant in the presence of recyclable catalyst and solvent.

公开(公告)号：US20230191336A1

公开(公告)日：2023-06-22

申请号：US18001092

申请日：2022-03-23

Applicant: NANJING TECH UNIVERSITY

Inventor： Yong WANG ,  Dinglei ZHONG ,  Jiemei ZHOU

IPC: B01D67/00 ,  B01D69/08 ,  B01D71/80 ,  B01D71/68 ,  B01D71/52

CPC classification number: B01D67/0027 ,  B01D69/08 ,  B01D71/80 ,  B01D67/002 ,  B01D71/68 ,  B01D71/5211

Abstract: The disclosure provides a method for preparing a hollow fiber membrane by melt spinning-stretching and selective swelling, including: preparing a nascent hollow fiber by melt spinning in an inert gas protective atmosphere by using an amphiphilic block copolymer as a film forming material, and stretching the nascent hollow fiber in the cooling process, a stretch rate being controlled at 200-540 mm/min, and a stretch ratio being controlled at 150-600%; immersing the obtained hollow fiber in a swelling solvent, and treating the hollow fiber in a water bath at 65° C. for 1 h; and then transferring the hollow fiber into a long-chain alkane solvent, treating the hollow fiber at the same temperature for 1-12 h, and after the completion of the treatment, immediately taking out the hollow fiber and drying the hollow fiber to obtain the hollow fiber membrane with a bicontinuous porous structure. By combining the melt spinning-stretching and the selective swelling, the method of the disclosure can synchronously and continuously improve the permeability and selectivity of the hollow fiber membrane. The treatment in the long-chain alkane solvent can make the polar chain excessively enriched on the surface of the membrane migrate inward, thereby improving the performance of the hollow fiber membrane.