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：US20230271842A1

公开(公告)日：2023-08-31

申请号：US18019315

申请日：2021-08-05

Applicant: Sankar Nair ,  Christopher W. Jones ,  Akshay Korde ,  Johannes Leisen ,  Byunghyun Min ,  Ziyuan Wang ,  Georgia Tech Research Corporation

Inventor： Sankar Nair ,  Christopher W. Jones ,  Akshay Korde ,  Johannes Leisen ,  Byunghyun Min ,  Ziyuan Wang

IPC: C01B39/48 ,  B01J20/18 ,  B01J20/28 ,  B01J20/30 ,  B01J29/70 ,  B01J35/00 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00

CPC classification number: C01B39/48 ,  B01J20/18 ,  B01J20/28023 ,  B01J20/28007 ,  B01J20/2808 ,  B01J20/28083 ,  B01J20/28061 ,  B01J20/28064 ,  B01J20/28066 ,  B01J20/3057 ,  B01J29/7007 ,  B01J35/0013 ,  B01J35/006 ,  B01J35/023 ,  B01J35/1057 ,  B01J35/1061 ,  B01J35/1019 ,  B01J35/1023 ,  B01J35/1028 ,  B01J37/0018 ,  C01P2004/13 ,  C01P2004/54 ,  C01P2004/64 ,  C01P2006/16 ,  C01P2006/12 ,  C01P2004/04 ,  C01P2002/72 ,  C01P2002/82 ,  C01P2002/86 ,  C01P2002/84 ,  C01P2002/88

Abstract: Disclosed herein are nanostructured hierarchical zeolitic materials comprising: a plurality of zeolite nanotubes, each zeolite nanotube comprising a zeolitic wall perforated by a plurality of pores, the zeolitic wall defining a single longitudinal lumen. Also disclosed herein are bolaform structure directing agents comprising: a first hydrophilic end and a second hydrophilic end with a hydrophobic core therebetween; the hydrophobic core comprising one or more aromatic rings and one or more hydrophobic alkyl groups; the one or more aromatic rings comprising a biphenyl group; the one or more hydrophobic alkyl groups each independently comprising a C10 alkyl group; and the first hydrophilic end and the second hydrophilic end each independently comprising a quinuclidinium group. Also disclosed herein are methods of making and use of the plurality of zeolite nanotubes and the bolaform structure directing agents.

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.