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Title: Structural and Adsorption Properties of ZIF-8-7 Hybrid Materials Synthesized by Acid Gas-Assisted and De Novo Routes

Journal Article · · Journal of Physical Chemistry. C
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [3]; ORCiD logo [1]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [1]
  1. School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
  2. Materials Science and Engineering Department, University of Tennessee, Knoxville, Tennessee 37996, United States
  3. Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
  4. Materials Science and Engineering Department, University of Tennessee, Knoxville, Tennessee 37996, United States, Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
  5. School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States

The tuning of micropore environments in zeolitic imidazolate frameworks (ZIFs) by mixed-linker synthesis has the potential for enabling new molecular separation properties. However, de novo synthesis of mixed-linker (hybrid) ZIFs is often challenging due to the disparate chemical properties of the different linkers. Here, we elucidate the structure and properties of an unconventional ZIF-8-7 hybrid material synthesized via a controlled-acid-gas-assisted degradation and reconstruction (solvent-assisted crystal redemption, SACRed) strategy. Selective insertion of benzimidazole (ZIF-7 linker) into ZIF-8 using SACRed is used as a facile method to generate a ZIF-8-7 hybrid material that is otherwise difficult to synthesize by de novo methods. Detailed crystal structure and textural characterizations clarify the significant differences in the microstructure of the SACRed-derived ZIF-8-7 hybrid material relative to a de novo synthesized hybrid of the same overall linker composition as well as the parent ZIF-8 material. Unary and binary adsorption measurements reveal the tunability of adsorption characteristics as well as the prevalence of nonideal cooperative mixture adsorption effects that lead to large deviations from predictions made with ideal adsorbed solution theory.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012577; AC05-00OR22725
OSTI ID:
2222975
Alternate ID(s):
OSTI ID: 2251596
Journal Information:
Journal of Physical Chemistry. C, Journal Name: Journal of Physical Chemistry. C Vol. 127 Journal Issue: 49; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (55)

Generalized Gradient Approximation Made Simple journal October 1996
Thermodynamics of mixed-gas adsorption journal January 1965
Adsorption of Cyclohexane in Pure Silica Zeolites: High-Throughput Computational Screening Validated by Experimental Data journal November 2018
Is the bet equation applicable to microporous adsorbents? book September 2007
Projector augmented-wave method journal December 1994
Exploring the Framework Hydrophobicity and Flexibility of ZIF-8: From Biofuel Recovery to Hydrocarbon Separations journal October 2013
Tunable CO 2 Adsorbents by Mixed-Linker Synthesis and Postsynthetic Modification of Zeolitic Imidazolate Frameworks journal April 2013
UiO-66 type MOFs with mixed-linkers - 1,4-Benzenedicarboxylate and 1,4-naphthalenedicarboxylate: Effect of the modulator and post-synthetic exchange journal October 2020
The Cambridge Structural Database
  • Groom, Colin R.; Bruno, Ian J.; Lightfoot, Matthew P.
  • Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, Vol. 72, Issue 2, p. 171-179 https://doi.org/10.1107/S2052520616003954
journal April 2016
Synthesizing New Hybrid Zeolitic Imidazolate Frameworks by Controlled Demolition and Reconstruction journal September 2019
User-friendly graphical user interface software for ideal adsorbed solution theory calculations journal November 2017
Defibrillation of soft porous metal-organic frameworks with electric fields journal October 2017
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Hierarchical ZIF-8 Materials via Acid Gas-Induced Defect Sites: Synthesis, Characterization, and Functional Properties journal August 2023
NMR and X-ray Study Revealing the Rigidity of Zeolitic Imidazolate Frameworks journal June 2012
Recovery of Acid-Gas-Degraded Zeolitic Imidazolate Frameworks by Solvent-Assisted Crystal Redemption (SACRed) journal September 2017
Purification of 2,5-Dimethylfuran from n-Butanol Using Defect-Engineered Metal–Organic Frameworks journal May 2018
Exceptional chemical and thermal stability of zeolitic imidazolate frameworks journal June 2006
Ultrahigh selectivity of benzene/cyclohexane separation by ZIF-8 framework: Insights from spin-probe EPR spectroscopy journal January 2022
DIOPTAS : a program for reduction of two-dimensional X-ray diffraction data and data exploration journal May 2015
The separation of xylene isomers by ZIF-8: A demonstration of the extraordinary flexibility of the ZIF-8 framework journal June 2013
Structure Evolution of Chemically Degraded ZIF-8 journal June 2022
Metal-organic frameworks for C6–C8 hydrocarbon separations journal July 2021
Unexpected Molecular Sieving Properties of Zeolitic Imidazolate Framework-8 journal July 2012
Highly Tunable Molecular Sieving and Adsorption Properties of Mixed-Linker Zeolitic Imidazolate Frameworks journal March 2015
ISODISPLACE : a web-based tool for exploring structural distortions journal July 2006
Recovery of 2,3-Butanediol from Fermentation Broth by Zeolitic Imidazolate Frameworks journal October 2023
Mixed-linker zeolitic imidazolate framework mixed-matrix membranes for aggressive CO2 separation from natural gas journal July 2014
Controlled Demolition and Reconstruction of Imidazolate and Carboxylate Metal–Organic Frameworks by Acid Gas Exposure and Linker Treatment journal October 2021
Designed metal-organic frameworks with potential for multi-component hydrocarbon separation journal June 2023
Fine-Tuning Window Apertures in ZIF-8/67 Frameworks by Metal Ions and Temperature for High-Efficiency Molecular Sieving of Xylenes journal August 2021
Tuning the Structures of Metal–Organic Frameworks via a Mixed-Linker Strategy for Ethylene/Ethane Kinetic Separation journal April 2020
Interactions of SO 2 -Containing Acid Gases with ZIF-8: Structural Changes and Mechanistic Investigations journal November 2016
The effect of amorphization on the molecular motion of the 2-methylimidazolate linkers in ZIF-8 journal January 2019
Hybrid Zeolitic Imidazolate Frameworks: Controlling Framework Porosity and Functionality by Mixed-Linker Synthesis journal April 2012
Opening the Gate: Framework Flexibility in ZIF-8 Explored by Experiments and Simulations journal June 2011
Predicting multicomponent adsorption: 50 years of the ideal adsorbed solution theory journal August 2015
Postsynthetic Modification of ZIF-8 Membranes via Membrane Surface Ligand Exchange for Light Hydrocarbon Gas Separation Enhancement journal December 2019
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Effects of -NO2 and -NH2 functional groups in mixed-linker Zr-based MOFs on gas adsorption of CO2 and CH4 journal April 2018
Tuning n-Alkane Adsorption on Mixed-Linker Zeolitic Imidazolate Framework-8-90 via Controllable Ligand Hybridization: Insight into the Confinement from an Energetics Perspective journal June 2019
TOPAS and TOPAS-Academic : an optimization program integrating computer algebra and crystallographic objects written in C++ journal February 2018
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Kinetic Model of Acid Gas Induced Defect Propagation in Zeolitic Imidazolate Frameworks journal July 2022
Zeolitic Imidazolate Framework Membranes: Novel Synthesis Methods and Progress Toward Industrial Use journal June 2022
Sorption and Transport of Vapors in ZIF-11: Adsorption, Diffusion, and Linker Flexibility journal April 2019
Mixed-linker UiO-66: structure–property relationships revealed by a combination of high-resolution powder X-ray diffraction and density functional theory calculations journal January 2017
Water-based synthesis of zeolitic imidazolate framework-8 with high morphology level at room temperature journal January 2015
Precise Measurement and Controlled Tuning of Effective Window Sizes in ZIF-8 Framework for Efficient Separation of Xylenes journal August 2019
Paralyzed membrane: Current-driven synthesis of a metal-organic framework with sharpened propene/propane separation journal October 2018
Comprehensive Assessment of the Accuracy of the Ideal Adsorbed Solution Theory for Predicting Binary Adsorption of Gas Mixtures in Porous Materials journal December 2021
A Database of Porous Rigid Amorphous Materials journal August 2020
Dynamic Gate Opening of ZIF-8 for Bulky Molecule Adsorption as Studied by Vapor Adsorption Measurements and Computational Approach journal October 2019
Ultra-Tuning of the Aperture Size in Stiffened ZIF-8_Cm Frameworks with Mixed-Linker Strategy for Enhanced CO 2 /CH 4 Separation journal December 2018
Advances in adsorptive separation of benzene and cyclohexane by metal-organic framework adsorbents journal June 2021

Figures / Tables (7)