公开(公告)号：US20220370960A1

公开(公告)日：2022-11-24

申请号：US17612530

申请日：2020-05-22

Applicant: Georgia Tech Research Corporation

Inventor： Sankar Nair ,  Chen Ma ,  Meisha Shofner ,  Scott Sinquefield ,  Zhongzhen Wang

IPC: B01D67/00 ,  B01D71/02 ,  C02F1/44 ,  B01D69/10 ,  B01D69/12

Abstract: Disclosed herein are membranes comprising: porous substrate; and two or more graphene oxide (GO) sheets disposed on the porous substrate, each GO layer comprising a plurality of GO flakes, each GO flake comprising a planar graphene structure with oxygen moieties extending therefrom, wherein the membrane, when a pressure from 10 bar to 50 bar of transmembrane pressure is applied from 1 hour to 48 hours, has an aqueous flux wherein the aqueous flux changes by 5% or less while the pressure is applied. The membranes can also include an intercalating agent disposed between the two or more GO sheets, the intercalating agent interacting with each GO sheet, wherein the intercalating agent provides a non-covalent stabilization of the two or more GO sheets. Also disclosed herein are methods of making and using the same and systems for implementing the same.

公开(公告)号：US20220203307A1

公开(公告)日：2022-06-30

申请号：US17602490

申请日：2020-04-09

Applicant: Georgia Tech Research Corporation

Inventor： Sankar Nair ,  Shaowei Yang ,  Christopher W. Jones ,  Byunghyun Min

IPC: B01D71/02 ,  B01D69/12 ,  B01D53/22

Abstract: Disclosed are methods of manufacturing a zeolite membrane, comprising: providing at least one porous substrate; and coating the at least one porous substrate with a membrane. In some embodiments, the method further comprises hydrothermally treating the membrane with a first hydrothermal treatment step with tetrapropylammonium fluoride (TPAF) and a second hydrothermal treatment step with tetraethammonium hydroxide (TEAOH). In some embodiments, coating the substrate with a membrane comprises surrounding at least a portion of the at least one porous substrate with a precursor gel, the gel comprising a gel phase and a plurality of CHA or MFI crystals; heating the at least one porous substrate and the precursor gel; washing the at least one porous substrate; drying the at least one porous substrate; and calcining the at least one porous substrate.

公开(公告)号：US20200368688A1

公开(公告)日：2020-11-26

申请号：US16941963

申请日：2020-07-29

Applicant: Georgia Tech Research Corporation

Inventor： Fereshteh Rashidi ,  Sankar Nair ,  Nikita Kevlich ,  Meisha Shofner ,  Scott Sinquefield ,  Zhongzhen Wang

IPC: B01D61/02 ,  B01D71/02 ,  B01D63/06 ,  D21C11/00 ,  B01D63/10 ,  B01D69/02

Abstract: The disclosed technology includes a membrane-based device configured to concentrate black liquor, which results from papermaking. Certain embodiments may comprise a nanofiltration membrane configured to remove lignin from black liquor, and the nanofiltration membrane may include a first macroporous polymer substrate and a first graphene oxide membrane covering the first macroporous polymer substrate. Some embodiments may comprise a reverse osmosis membrane, which may include a second macroporous polymer substrate and a second graphene oxide membrane covering the second macroporous polymer substrate.

公开(公告)号：US20170107237A1

公开(公告)日：2017-04-20

申请号：US15391321

申请日：2016-12-27

Applicant: GEORGIA TECH RESEARCH CORPORATION

Inventor： Joshua Allen Thompson ,  Catherine Rose Blad ,  Christopher W. Jones ,  Sankar Nair

IPC: C07F3/06 ,  B01D53/02

CPC classification number: C07F3/06 ,  B01D53/02 ,  B01D2253/204 ,  B01D2257/504 ,  B01D2257/7025 ,  B01J20/226 ,  C01B37/00 ,  C01B39/00 ,  C07F3/003 ,  Y02C10/08 ,  Y02P20/152

Abstract: Metal-organic frameworks, in particular hybrid zeolitic imidazolate frameworks (ZIFs), devices having hybrid ZIFs, and methods for preparing hybrid ZIFs are disclosed herein. In some embodiments, the method includes preparing a first solution comprising a first imidazolate and a second imidazolate, preparing a second solution comprising a metal ion, and combining the first solution and the second solution to form the hybrid ZIF.

公开(公告)号：US09527872B2

公开(公告)日：2016-12-27

申请号：US13754430

申请日：2013-01-30

Applicant: Georgia Tech Research Corporation

Inventor： Joshua Allen Thompson ,  Catherine Rose Blad ,  Christopher W. Jones ,  Sankar Nair

IPC: C07F3/06 ,  B01D53/02 ,  C01B37/00 ,  C01B39/00 ,  C07F3/00 ,  B01J20/22

CPC classification number: C07F3/06 ,  B01D53/02 ,  B01D2253/204 ,  B01D2257/504 ,  B01D2257/7025 ,  B01J20/226 ,  C01B37/00 ,  C01B39/00 ,  C07F3/003 ,  Y02C10/08 ,  Y02P20/152

Abstract: Metal-organic frameworks, in particular hybrid zeolitic imidazolate frameworks (ZIFs), devices having hybrid ZIFs, and methods for preparing hybrid ZIFs are disclosed herein. In some embodiments, the method includes preparing a first solution comprising a first imidazolate and a second imidazolate, preparing a second solution comprising a metal ion, and combining the first solution and the second solution to form the hybrid ZIF.

Abstract translation: 金属 - 有机骨架，特别是杂化沸石咪唑酯骨架（ZIF），具有杂化ZIF的装置和制备杂合ZIF的方法在本文中公开。 在一些实施方案中，该方法包括制备包含第一咪唑酸盐和第二咪唑酸盐的第一溶液，制备包含金属离子的第二溶液，并组合第一溶液和第二溶液以形成杂化ZIF。

公开(公告)号：US20130197235A1

公开(公告)日：2013-08-01

申请号：US13754430

申请日：2013-01-30

Applicant: GEORGIA TECH RESEARCH CORPORATION

Inventor： Joshua Allen Thompson ,  Catherine Rose Blad ,  Christopher W. Jones ,  Sankar Nair

IPC: C07F3/06 ,  B01J20/22

CPC classification number: C07F3/06 ,  B01D53/02 ,  B01D2253/204 ,  B01D2257/504 ,  B01D2257/7025 ,  B01J20/226 ,  C01B37/00 ,  C01B39/00 ,  C07F3/003 ,  Y02C10/08 ,  Y02P20/152

Abstract: Metal-organic frameworks, in particular hybrid zeolitic imidazolate frameworks (ZIFs), devices having hybrid ZIFs, and methods for preparing hybrid ZIFs are disclosed herein. In some embodiments, the method includes preparing a first solution comprising a first imidazolate and a second imidazolate, preparing a second solution comprising a metal ion, and combining the first solution and the second solution to form the hybrid ZIF.

Abstract translation: 金属 - 有机骨架，特别是杂化沸石咪唑酯骨架（ZIF），具有杂化ZIF的装置和制备杂合ZIF的方法在本文中公开。 在一些实施方案中，该方法包括制备包含第一咪唑酸盐和第二咪唑酸盐的第一溶液，制备包含金属离子的第二溶液，并组合第一溶液和第二溶液以形成杂化ZIF。