DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Hierarchically porous and single Zn atom-embedded carbon molecular sieves for H2 separations

Journal Article · · Nature Communications

Abstract Hierarchically porous materials containing sub-nm ultramicropores with molecular sieving abilities and microcavities with high gas diffusivity may realize energy-efficient membranes for gas separations. However, rationally designing and constructing such pores into large-area membranes enabling efficient H 2 separations remains challenging. Here, we report the synthesis and utilization of hybrid carbon molecular sieve membranes with well-controlled nano- and micro-pores and single zinc atoms and clusters well-dispersed inside the nanopores via the carbonization of supramolecular mixed matrix materials containing amorphous and crystalline zeolitic imidazolate frameworks. Carbonization temperature is used to fine-tune pore sizes, achieving ultrahigh selectivity for H 2 /CO 2 (130), H 2 /CH 4 (2900), H 2 /N 2 (880), and H 2 /C 2 H 6 (7900) with stability against water vapor and physical aging during a continuous 120-h test.

Sponsoring Organization:
USDOE
Grant/Contract Number:
FE0032209
OSTI ID:
2396011
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 15; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (37)

Ultraselective Carbon Molecular Sieve Membranes with Tailored Synergistic Sorption Selective Properties journal July 2017
Tunable Supramolecular Cavities Molecularly Homogenized in Polymer Membranes for Ultraefficient Precombustion CO 2 Capture journal November 2021
Palladium‐Percolated Networks Enabled by Low Loadings of Branched Nanorods for Enhanced H2 Separations journal May 2023
Creation of Well‐Defined “Mid‐Sized” Micropores in Carbon Molecular Sieve Membranes journal August 2019
Molecularly engineering polymeric membranes for H 2 / CO 2 separation at 100–300 °C journal July 2020
In Situ Derived Hybrid Carbon Molecular Sieve Membranes with Tailored Ultramicroporosity for Efficient Gas Separation journal October 2021
In Situ Growth of Crystalline and Polymer‐Incorporated Amorphous ZIFs in Polybenzimidazole Achieving Hierarchical Nanostructures for Carbon Capture journal May 2022
New insights into structural evolution in carbon molecular sieve membranes during pyrolysis journal January 2019
New Strategies for Novel MOF-Derived Carbon Materials Based on Nanoarchitectures journal January 2020
Highly Polar but Amorphous Polymers with Robust Membrane CO2/N2 Separation Performance journal August 2019
The upper bound revisited journal July 2008
Effect of pyrolysis atmosphere on separation performance of carbon molecular sieve membranes journal September 2010
Mixed-matrix carbon molecular sieve membranes using hierarchical zeolite: A simple approach towards high CO2 permeability enhancements journal October 2019
High-performance carbonized ZIF-8-doped hybrid carbon molecular sieve membrane for CO2/N2 separation journal August 2022
MOF-derived nanocomposites functionalized carbon molecular sieve membrane for enhanced ethylene/ethane separation journal November 2022
Carbon molecular sieve gas separation materials and membranes: A comprehensive review journal April 2024
Reduced Aging in Carbon Molecular Sieve Membranes Derived from PIM-1 and MOP-18 journal July 2021
50th Anniversary Perspective : Polymers and Mixed Matrix Membranes for Gas and Vapor Separation: A Review and Prospective Opportunities journal October 2017
Unexpectedly Strong Size-Sieving Ability in Carbonized Polybenzimidazole for Membrane H2/CO2 Separation journal November 2019
Precise Hydrogen Sieving by Carbon Molecular Sieve Membranes Derived from Solution-Processable Aromatic Polyamides journal December 2022
Use of nitrogen vs. carbon dioxide in the characterization of activated carbons journal January 1987
Basis of Permeability/Selectivity Tradeoff Relations in Polymeric Gas Separation Membranes journal January 1999
Carbon hollow fiber membranes for a molecular sieve with precise-cutoff ultramicropores for superior hydrogen separation journal January 2021
Gas-sieving zeolitic membranes fabricated by condensation of precursor nanosheets journal October 2020
Advanced carbon molecular sieve membranes derived from molecularly engineered cross-linkable copolyimide for gas separations journal December 2022
Precise molecular sieving of ethylene from ethane using triptycene-derived submicroporous carbon membranes journal August 2023
A thermally derived and optimized structure from ZIF-8 with giant enhancement in CO 2 uptake journal January 2014
High performance MoS 2 membranes: effects of thermally driven phase transition on CO 2 separation efficiency journal January 2016
Zeolitic imidazolate framework (ZIF-8) derived nanoporous carbon: the effect of carbonization temperature on the supercapacitor performance in an aqueous electrolyte journal January 2016
Unprecedented size-sieving ability in polybenzimidazole doped with polyprotic acids for membrane H 2 /CO 2 separation journal January 2018
Data Reduction and Error Analysis for the Physical Sciences, 2nd ed. journal August 1993
Tailoring sub-3.3 Å ultramicropores in advanced carbon molecular sieve membranes for blue hydrogen production journal March 2022
Ultrathin, Molecular-Sieving Graphene Oxide Membranes for Selective Hydrogen Separation journal October 2013
Metal-organic framework nanosheets as building blocks for molecular sieving membranes journal December 2014
Maximizing the right stuff: The trade-off between membrane permeability and selectivity journal June 2017
Reverse osmosis molecular differentiation of organic liquids using carbon molecular sieve membranes journal August 2016
Single-step hydrogen production from NH 3 , CH 4 , and biogas in stacked proton ceramic reactors journal April 2022