Recent advances on metal–organic frameworks for deep purification of olefins

Jiang, Yunjia; Yang, Wenlei; Zhang, Yuanbin; Wang, Lingyao; Chen, Banglin

doi:10.1039/d4ta00330f

J. Mater. Chem. A

2024

DOI: 10.1039/d4ta00330f

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Recent advances on metal–organic frameworks for deep purification of olefins

Yunjia Jiang,

Wenlei Yang,

Yuanbin Zhang

et al.

Abstract: The removal of trace impurities, such as alkynes and carbon dioxide, is critically important in the production of high-purity light hydrocarbon olefins, which are essential for a variety of downstream...

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Cited by 17 publications

References 149 publications

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Immobilization of Lewis Basic Sites into a Quasi‐Molecular‐Sieving Metal–Organic Framework for Enhanced C₃H₆/C₃H₈ Separation

Liu,

Li,

Yan

et al. 2024

Adv Funct Materials

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Controlling gas sorption through pore engineering is indispensable in molecular recognition and separation processes. The challenge lies in developing high‐efficiency adsorbents for C3H6/C3H8 separation, specifically enhancing the affinity toward C3H6 for high selectivity while maintaining a large gas uptake to obtain high separation efficiency. Herein, this problem can be addressed by controlling host‐guest interactions using Lewis basic sites modulation. A precise steric design of channel pores using an amino group as additional interacting sites enables the synergetic increase in C3H6 adsorption while suppressing the C3H8 adsorption, resulting in a quasi‐molecular‐sieving effect. Among them, TYUT‐23 has a perfect pore size that fits minimum cross‐sectional dimensions of C3H6, affording exceptional binding affinity for the C3H6 molecule. It adsorbs a large amount of C3H6 (2.5 mmol g−1) and concurrently exhibits both remarkably high IAST selectivity (71) under ambient conditions. Equimolar C3H6/C3H8 breakthrough experiments also prove the prominent separation performance of TYUT‐23 for the production of high‐purity C3H6. The C3H6 adsorption/separation mechanism has been investigated using C3H6‐loaded single‐crystal structure analysis. This material demonstrates the potential of optimizing host‐C3H6 interactions using Lewis basic site modulation in industrial separations.

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Immobilization of Lewis Basic Sites into a Quasi‐Molecular‐Sieving Metal–Organic Framework for Enhanced C₃H₆/C₃H₈ Separation

Liu,

Li,

Yan

et al. 2024

Adv Funct Materials

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A Flexible Metal‐Organic Framework for the Removal of Propyne from Propylene

Tan,

Wang,

Ren

et al. 2024

Eur J Inorg Chem

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Efficient removal of propyne impurities from propylene is essential for producing high‐purity propylene. In this study, we utilize the flexible metal‐organic frameworks (MOFs) material, MOF‐508, for C3H4/C3H6 separation. Propyne (C3H4) induces a "gate‐opening" effect in MOF‐508, transitioning it from a narrow‐pore (NP) phase to a large‐pore phase at low pressure. In contrast, propylene (C3H6) only triggers this effect at a higher pressure of 0.55 bar. Notably, at 298 K and 0.5 bar, MOF‐508 adsorbs 71.9 cm³/g of C3H4, compared to just 7.9 cm³/g of C3H6. This selective adsorption significantly enhances C3H4/C3H6 separation (50/50, v/v), as further demonstrated by dynamic breakthrough experiments.

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Three-dimensional solvent-free Cu(I)-based metal–organic framework coordinated by 1,2,4-triazole derivative and its thermal decomposition kinetics

Xi,

Zhang,

et al. 2024

Reac Kinet Mech Cat

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Recent advances on metal–organic frameworks for deep purification of olefins

Abstract: The removal of trace impurities, such as alkynes and carbon dioxide, is critically important in the production of high-purity light hydrocarbon olefins, which are essential for a variety of downstream...

Cited by 17 publications

References 149 publications

Immobilization of Lewis Basic Sites into a Quasi‐Molecular‐Sieving Metal–Organic Framework for Enhanced C₃H₆/C₃H₈ Separation

Immobilization of Lewis Basic Sites into a Quasi‐Molecular‐Sieving Metal–Organic Framework for Enhanced C₃H₆/C₃H₈ Separation

A Flexible Metal‐Organic Framework for the Removal of Propyne from Propylene

Three-dimensional solvent-free Cu(I)-based metal–organic framework coordinated by 1,2,4-triazole derivative and its thermal decomposition kinetics

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Product

Resources

About

Recent advances on metal–organic frameworks for deep purification of olefins

Abstract: The removal of trace impurities, such as alkynes and carbon dioxide, is critically important in the production of high-purity light hydrocarbon olefins, which are essential for a variety of downstream...

Cited by 17 publications

References 149 publications

Immobilization of Lewis Basic Sites into a Quasi‐Molecular‐Sieving Metal–Organic Framework for Enhanced C3H6/C3H8 Separation

Immobilization of Lewis Basic Sites into a Quasi‐Molecular‐Sieving Metal–Organic Framework for Enhanced C3H6/C3H8 Separation

A Flexible Metal‐Organic Framework for the Removal of Propyne from Propylene

Three-dimensional solvent-free Cu(I)-based metal–organic framework coordinated by 1,2,4-triazole derivative and its thermal decomposition kinetics

Contact Info

Product

Resources

About

Immobilization of Lewis Basic Sites into a Quasi‐Molecular‐Sieving Metal–Organic Framework for Enhanced C₃H₆/C₃H₈ Separation

Immobilization of Lewis Basic Sites into a Quasi‐Molecular‐Sieving Metal–Organic Framework for Enhanced C₃H₆/C₃H₈ Separation