Fine-Tuning Window Apertures in ZIF-8/67 Frameworks by Metal Ions and Temperature for High-Efficiency Molecular Sieving of Xylenes

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Fine-Tuning Window Apertures in ZIF-8/67 Frameworks by Metal Ions and Temperature for High-Efficiency Molecular Sieving of Xylenes. / Polyukhov, Daniil M.; Poryvaev, Artem S.; Sukhikh, Aleksandr S. et al.

In: ACS Applied Materials and Interfaces, Vol. 13, No. 34, 01.09.2021, p. 40830-40836.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{bc20c07139654086a1ae98aec9dfe215,

title = "Fine-Tuning Window Apertures in ZIF-8/67 Frameworks by Metal Ions and Temperature for High-Efficiency Molecular Sieving of Xylenes",

abstract = "Separation of structurally similar components from their mixtures is one of the most promising applications of metal-organic frameworks (MOFs). A high efficiency of such molecular sieving requires fine tuning of the MOF structure. In this work, we investigate subtle metal- and temperature-induced changes in window dimensions of zeolitic imidazolate frameworks (ZIF-8(Zn) and ZIF-67(Co)) and apply such structural tuning for efficient separation of xylene isomers (p-, m-, and o-xylenes). The use of Co instead of Zn favorably modifies window geometry: it accelerates the diffusion of all components by a factor of 2-3 while maintaining closely the same separation efficiency as that of ZIF-8(Zn). Outstanding selectivity above 18:1 and faster isolation of demanded p-xylene from the ternary mixture using ZIF-67(Co) have been demonstrated at room temperature, opening new horizons for its energy-efficient xylene separation. More generally, our findings suggest the prospective ways to tune various MOFs for target liquid-state separations. ",

keywords = "diffusion, MOF, molecular sieves, tuning, xylene separation, ZIF-67, ZIF-8",

author = "Polyukhov, {Daniil M.} and Poryvaev, {Artem S.} and Sukhikh, {Aleksandr S.} and Gromilov, {Sergey A.} and Fedin, {Matvey V.}",

note = "Publisher Copyright: {\textcopyright} 2021 American Chemical Society.",

year = "2021",

month = sep,

day = "1",

doi = "10.1021/acsami.1c12166",

language = "English",

volume = "13",

pages = "40830--40836",

journal = "ACS applied materials & interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

number = "34",

}

RIS

TY - JOUR

T1 - Fine-Tuning Window Apertures in ZIF-8/67 Frameworks by Metal Ions and Temperature for High-Efficiency Molecular Sieving of Xylenes

AU - Polyukhov, Daniil M.

AU - Poryvaev, Artem S.

AU - Sukhikh, Aleksandr S.

AU - Gromilov, Sergey A.

AU - Fedin, Matvey V.

PY - 2021/9/1

Y1 - 2021/9/1

N2 - Separation of structurally similar components from their mixtures is one of the most promising applications of metal-organic frameworks (MOFs). A high efficiency of such molecular sieving requires fine tuning of the MOF structure. In this work, we investigate subtle metal- and temperature-induced changes in window dimensions of zeolitic imidazolate frameworks (ZIF-8(Zn) and ZIF-67(Co)) and apply such structural tuning for efficient separation of xylene isomers (p-, m-, and o-xylenes). The use of Co instead of Zn favorably modifies window geometry: it accelerates the diffusion of all components by a factor of 2-3 while maintaining closely the same separation efficiency as that of ZIF-8(Zn). Outstanding selectivity above 18:1 and faster isolation of demanded p-xylene from the ternary mixture using ZIF-67(Co) have been demonstrated at room temperature, opening new horizons for its energy-efficient xylene separation. More generally, our findings suggest the prospective ways to tune various MOFs for target liquid-state separations.

AB - Separation of structurally similar components from their mixtures is one of the most promising applications of metal-organic frameworks (MOFs). A high efficiency of such molecular sieving requires fine tuning of the MOF structure. In this work, we investigate subtle metal- and temperature-induced changes in window dimensions of zeolitic imidazolate frameworks (ZIF-8(Zn) and ZIF-67(Co)) and apply such structural tuning for efficient separation of xylene isomers (p-, m-, and o-xylenes). The use of Co instead of Zn favorably modifies window geometry: it accelerates the diffusion of all components by a factor of 2-3 while maintaining closely the same separation efficiency as that of ZIF-8(Zn). Outstanding selectivity above 18:1 and faster isolation of demanded p-xylene from the ternary mixture using ZIF-67(Co) have been demonstrated at room temperature, opening new horizons for its energy-efficient xylene separation. More generally, our findings suggest the prospective ways to tune various MOFs for target liquid-state separations.

KW - diffusion

KW - MOF

KW - molecular sieves

KW - tuning

KW - xylene separation

KW - ZIF-67

KW - ZIF-8

UR - http://www.scopus.com/inward/record.url?scp=85114390686&partnerID=8YFLogxK

U2 - 10.1021/acsami.1c12166

DO - 10.1021/acsami.1c12166

M3 - Article

C2 - 34423631

AN - SCOPUS:85114390686

VL - 13

SP - 40830

EP - 40836

JO - ACS applied materials & interfaces

JF - ACS applied materials & interfaces

SN - 1944-8244

IS - 34

ER -

ID: 34162397