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：US12226739B2

公开(公告)日：2025-02-18

申请号：US16803291

申请日：2020-02-27

Applicant: Phillips 66 Company ,  Georgia Tech Research Corporation

Inventor： Kiwon Eum ,  Shaowei Yang ,  Byunghyun Min ,  Chen Ma ,  Jeffrey H. Drese ,  Yash Tamhankar ,  Ryan P. Lively ,  Sankar Nair

IPC: B01D67/00 ,  B01D69/12 ,  B01D69/14 ,  B01D71/02 ,  B01D71/62

Abstract: A method of forming a molecular separation device is provided. The method comprises growing or depositing a silica MFI zeolite coating on a ceramic support. The method further comprises growing a ZIF-8 coating on the silica MFI zeolite coating. Growing the ZIF-8 coating on the silica MFI zeolite comprises applying a first reactant fluid including a metal salt and a second reactant fluid including an imidazole reactant to the silica MFI zeolite coating. Growing the ZIF-8 coating on the silica MFI zeolite further comprises reacting the first and second reactant fluid with the silica MFI zeolite coating to produce the ZIF-8 coating. In certain implementations, at least a portion of the ZIF-8 coating is interspersed with a portion of the silica MFI coating. A molecular separation device including the ZIF-8 coating and the silica MFI zeolite is also disclosed.

公开(公告)号：US11964242B2

公开(公告)日：2024-04-23

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 ,  B01D53/22 ,  B01D69/12

CPC classification number: B01D71/028 ,  B01D53/228 ,  B01D69/12 ,  B01D2257/504 ,  B01D2257/702 ,  B01D2323/08 ,  B01D2323/10 ,  B01D2325/02 ,  B01D2325/04 ,  B01D2325/20

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 tetraethylammonium 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：US20210268446A1

公开(公告)日：2021-09-02

申请号：US16803291

申请日：2020-02-27

Applicant: Phillips 66 Company ,  Georgia Tech Research Corporation

Inventor： Kiwon Eum ,  Shaowei Yang ,  Byunghyun Min ,  Chen Ma ,  Jeffrey H. Drese ,  Yash Tamhankar ,  Ryan P. Lively ,  Sankar Nair

IPC: B01D67/00 ,  B01D71/02 ,  B01D69/14 ,  B01D71/62

Abstract: A method of forming a molecular separation device is provided. The method comprises growing or depositing a silica MFI zeolite coating on a ceramic support. The method further comprises growing a ZIF-8 coating on the silica MFI zeolite coating. Growing the ZIF-8 coating on the silica MFI zeolite comprises applying a first reactant fluid including a metal salt and a second reactant fluid including an imidazole reactant to the silica MFI zeolite coating. Growing the ZIF-8 coating on the silica MFI zeolite further comprises reacting the first and second reactant fluid with the silica MFI zeolite coating to produce the ZIF-8 coating. In certain implementations, at least a portion of the ZIF-8 coating is interspersed with a portion of the silica MFI coating. A molecular separation device including the ZIF-8 coating and the silica MFI zeolite is also disclosed.

公开(公告)号：US20180326398A1

公开(公告)日：2018-11-15

申请号：US15971408

申请日：2018-05-04

Applicant: GEORGIA TECH RESEARCH CORPORATION ,  PHILLIPS 66 COMPANY

Inventor： Sankar Nair ,  Jeffrey H. Drese ,  Kiwon Eum ,  Ryan P. Lively ,  Ali Rownaghi ,  Yash Tamhankar ,  Shaowei Yang

IPC: B01J20/22 ,  B01D69/14 ,  B01J20/08 ,  B01J29/04

CPC classification number: B01J20/226 ,  B01D69/147 ,  B01J20/08 ,  B01J29/04 ,  B01J2229/183 ,  B01J2229/34

Abstract: Embodiments of the present disclosure provide apparatuses, methods and systems for scalable fabrication of thin, nanoporous membranes useful in industrial applications. One embodiment of the present disclosure provides a molecular separation device configured to efficiently separate molecular species. In this particular embodiment, porous hollow fibers form a supporting scaffold for synthesis of a molecular organic framework (MOF) membrane. The MOF membrane may be synthesized on the inner or outer porous hollow fiber surface as well as within the porous fiber wall. Embodiments of the present disclosure provide a variety of methods for producing the aforementioned molecular separation devices as well as methods for producing MOF membranes.