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Molecularly Mixed Composite Membranes for Advanced Separation Processes

Journal Article · · Angewandte Chemie (International Edition)
 [1];  [2];  [2];  [3];  [2];  [2];  [2]
  1. Georgia Institute of Technology, Atlanta, GA (United States); OSTI
  2. Georgia Institute of Technology, Atlanta, GA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Porous organic cages (POCs) are individual soluble, porous molecules. Additionally, when fabricated into mixed-matrix membranes (MMMs), the soluble POC molecules have the potential to exhibit intimate molecular-level mixing with the polymer matrix. POCs have only recently been incorporated into mixed matrix membrane materials, but this process has not yet resulted in significant improvements of membrane performance. Now, vertex-functionalized amorphous scrambled porous organic cages (ASPOCs) have been utilized as membrane performance enhancers and the amorphous ASPOC mixtures are observed to distribute throughout the matrix without any indication of particle formation or agglomeration, creating unique, molecularly mixed composite membranes. Overall, the molecularly mixed composite membrane provide significant increases in both membrane permeability and selectivity, offering new avenues for creation of membranes with unique properties in industrially relevant separations.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Understanding and Control of Acid Gas-induced Evolution of Materials for Energy (UNCAGE-ME); Georgia Institute of Technology, Atlanta, GA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
SC0012577; AC05-00OR22725
OSTI ID:
1767457
Alternate ID(s):
OSTI ID: 1492100
Journal Information:
Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 9 Vol. 58; ISSN 1433-7851
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Molecular‐Sieving Membrane by Partitioning the Channels in Ultrafiltration Membrane by In Situ Polymerization journal March 2020
Encapsulation of a Porous Organic Cage into the Pores of a Metal–Organic Framework for Enhanced CO 2 Separation journal February 2020
Electropolymerization of Molecular‐Sieving Polythiophene Membranes for H 2 Separation journal June 2019
Encapsulation of a Porous Organic Cage into the Pores of a Metal–Organic Framework for Enhanced CO 2 Separation journal February 2020
Molecularly Mixed Composite Membranes: Challenges and Opportunities journal March 2020