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Title: Pore-Space-Partition-Enabled Exceptional Ethane Uptake and Ethane-Selective Ethane–Ethylene Separation

Journal Article · · Journal of the American Chemical Society

A modell material for C2H6/C2H4 separation would simultaneously have the highest C2H6 uptake capacity and the highest C2H6/C2H4 selectivity. But such material is elusive. A benchmark material for ethane-selective C2H6/C2H4 separation is peroxo-functionalized MOF-74-Fe that exhibits the best known separation performance due to its high C2H6/C2H4 selectivity (4.4), although its C2H6 uptake capacity is moderate (74.3 cm3/g). Here, we report a family of pore-space-partitioned crystalline porous materials (CPMs) with exceptional C2H6 uptake capacity and C2H6/C2H4 separation potential (i.e., C2H4 recovered from the mixture) despite their moderate C2H6/C2H4 selectivity (up to 1.75). The ethane uptake capacity as high as 166.8 cm3/g at 1 atm and 298 K, more than twice that of peroxo-MOF-74-Fe, was previously achieved even though the isosteric heat of adsorption (21.9–30.4 kJ/mol) for these CPMs is as low as about one-third of that for peroxo-MOF-74-Fe (66.8 kJ/mol). While the overall C2H6/C2H4 separation potentials have not yet surpassed peroxo-MOF-74-Fe, these robust CPMs exhibit outstanding properties including high thermal stability (up to 450 °C) and aqueous stability, low regeneration energy, and a high degree of chemical and geometrical tunability within the same isoreticular framework.

Research Organization:
Univ. of California, Riverside, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
SC0010596
OSTI ID:
1599639
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 5 Vol. 142; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (51)

Stable Metal-Organic Frameworks: Design, Synthesis, and Applications journal February 2018
Metal-Organic Frameworks for Separation journal March 2018
Tailor-Made Microporous Metal-Organic Frameworks for the Full Separation of Propane from Propylene Through Selective Size Exclusion journal October 2018
Simultaneous Trapping of C 2 H 2 and C 2 H 6 from a Ternary Mixture of C 2 H 2 /C 2 H 4 /C 2 H 6 in a Robust Metal–Organic Framework for the Purification of C 2 H 4 journal October 2018
Selective Capture of Carbon Dioxide under Humid Conditions by Hydrophobic Chabazite-Type Zeolitic Imidazolate Frameworks journal July 2014
Exploration of porous metal–organic frameworks for gas separation and purification journal January 2019
Titanium-based metal–organic frameworks for photocatalytic applications journal March 2018
Ethane selective adsorbent Ni(bdc)(ted)0.5 with high uptake and its significance in adsorption separation of ethane and ethylene journal July 2016
An ethane-trapping MOF PCN-250 for highly selective adsorption of ethane over ethylene journal January 2018
Olefins from conventional and heavy feedstocks: Energy use in steam cracking and alternative processes journal March 2006
Metal–organic frameworks: Structures and functional applications journal July 2019
Methodologies for screening and selection of crystalline microporous materials in mixture separations journal April 2018
Metal–Organic Frameworks as Platforms for Functional Materials journal February 2016
Pore Space Partition in Metal–Organic Frameworks journal January 2017
Bimetallic Metal–Organic Frameworks for Gas Storage and Separation journal March 2017
Highly Adsorptive Separation of Ethane/Ethylene by An Ethane-Selective MOF MIL-142A journal March 2018
Enhancement of Ethane Selectivity in Ethane–Ethylene Mixtures by Perfluoro Groups in Zr-Based Metal-Organic Frameworks journal July 2019
Grand Challenges and Future Opportunities for Metal–Organic Frameworks journal June 2017
Ethane Selective IRMOF-8 and Its Significance in Ethane–Ethylene Separation by Adsorption journal July 2014
Metal–Organic Frameworks for Separations journal September 2011
Metal-Organic Frameworks Based on Trigonal Prismatic Building Blocks and the New “acs” Topology journal May 2005
Pore Space Partition and Charge Separation in Cage-within-Cage Indium−Organic Frameworks with High CO 2 Uptake journal December 2010
Ethane/Ethene Separation Turned on Its Head: Selective Ethane Adsorption on the Metal−Organic Framework ZIF-7 through a Gate-Opening Mechanism journal December 2010
Selective Binding of O 2 over N 2 in a Redox–Active Metal–Organic Framework with Open Iron(II) Coordination Sites journal September 2011
How Linker’s Modification Controls Swelling Properties of Highly Flexible Iron(III) Dicarboxylates MIL-88 journal November 2011
Introduction of π-Complexation into Porous Aromatic Framework for Highly Selective Adsorption of Ethylene over Ethane journal June 2014
Pore Space Partition by Symmetry-Matching Regulated Ligand Insertion and Dramatic Tuning on Carbon Dioxide Uptake journal January 2015
Boosting Ethane/Ethylene Separation within Isoreticular Ultramicroporous Metal–Organic Frameworks journal September 2018
A Robust Ethane-Trapping Metal–Organic Framework with a High Capacity for Ethylene Purification journal March 2019
Seven chemical separations to change the world journal April 2016
The chemistry of metal–organic frameworks for CO2 capture, regeneration and conversion journal July 2017
Highly controlled acetylene accommodation in a metal–organic microporous material journal July 2005
Porous materials with optimal adsorption thermodynamics and kinetics for CO2 separation journal February 2013
Supramolecular binding and separation of hydrocarbons within a functionalized porous metal–organic framework journal December 2014
Efficient purification of ethene by an ethane-trapping metal-organic framework journal October 2015
A phase transformable ultrastable titanium-carboxylate framework for photoconduction journal April 2018
Molecular sieving of ethylene from ethane using a rigid metal–organic framework journal November 2018
Titanium coordination compounds: from discrete metal complexes to metal–organic frameworks journal January 2017
Gas/vapour separation using ultra-microporous metal–organic frameworks: insights into the structure/separation relationship journal January 2017
Screening metal–organic frameworks for mixture separations in fixed-bed adsorbers using a combined selectivity/capacity metric journal January 2017
Pore environment engineering in metal–organic frameworks for efficient ethane/ethylene separation journal January 2019
Hydrogen adsorption in the metal–organic frameworks Fe2(dobdc) and Fe2(O2)(dobdc) journal January 2012
Metal–organic frameworks with potential for energy-efficient adsorptive separation of light hydrocarbons journal January 2012
Role of Solvent-Host Interactions That Lead to Very Large Swelling of Hybrid Frameworks journal March 2007
Hydrocarbon Separations in a Metal-Organic Framework with Open Iron(II) Coordination Sites journal March 2012
The Chemistry and Applications of Metal-Organic Frameworks journal August 2013
Pore chemistry and size control in hybrid porous materials for acetylene capture from ethylene journal May 2016
A metal-organic framework-based splitter for separating propylene from propane journal July 2016
Molecular sieves for gas separation journal July 2016
Ethane/ethylene separation in a metal-organic framework with iron-peroxo sites journal October 2018
Synergistic sorbent separation for one-step ethylene purification from a four-component mixture journal October 2019

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