Metal–Organic Frameworks for Highly Selective Separation of Xylene Isomers and Single-Crystal X-ray Study of Aromatic Guest–Host Inclusion Compounds

Metal–Organic Frameworks for Highly Selective Separation of Xylene Isomers and Single-Crystal X-ray Study of Aromatic Guest–Host Inclusion Compounds Full article

Journal

ACS Applied Materials & Interfaces
ISSN: 1944-8244 , E-ISSN: 1944-8252

Output data

Year: 2021, Volume: 13, Number: 12, Pages: 14768-14777 Pages count : 10 DOI: 10.1021/acsami.1c02812

Authors

Sapianik Aleksandr A. ^1,2 , Dudko Evgeny R. ^2,3 , Kovalenko Konstantin A. ² , Barsukova Marina O. ^1,2 , Samsonenko Denis G. ² , Dybtsev Danil N. ² , Fedin Vladimir P. ²

Affiliations

1	Functional Materials Design, Discovery and Development Research Group (FMD3), Advanced Membranes and Porous Materials Center (AMPM), Division of Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
2	Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
3	Novosibirsk State University, Novosibirsk 630090, Russia

Separation of hydrocarbon molecules, such as benzene/cyclohexane and o-xylene/m-xylene/p-xylene, is relevant due to their widespread application as chemical feedstock but challenging because of their similar boiling points and close molecular sizes. Physisorption separation could offer an energy-efficient solution to this problem, but the design and synthesis of sorbents that exhibit high selectivity for one of the hydrocarbons remain a largely unmet challenge. Herein, we report a new heterometallic MOF with a unique tortuous shape of channels decorated with aromatic sorption sites [Li2Zn2(bpy)(ndc)3] (NIIC-30(Ph), bpy = 4,4′-bipyridine, ndc2– = naphthalene-1,4-dicarboxylate) and study of its benzene/cyclohexane and xylene vapor and liquid separation. For an equimolar benzene/cyclohexane mixture, it is possible to achieve a 10-fold excess of benzene in the adsorbed phase. In the case of xylenes, microporous framework NIIC-30(Ph) demonstrates outstanding selective sorption properties and becomes a new benchmark for m-/o-xylene separation. In addition, NIIC-30(Ph) is stable enough to carry out at least three separation cycles of benzene/cyclohexane mixtures or ternary o-xylene/m-xylene/p-xylene mixtures both in the liquid and in the vapor phase. Insights into the performance of NIIC-30(Ph) are gained from X-ray structural studies of each aromatic guest inclusion compound.

Sapianik A.A. , Dudko E.R. , Kovalenko K.A. , Barsukova M.O. , Samsonenko D.G. , Dybtsev D.N. , Fedin V.P.
Metal–Organic Frameworks for Highly Selective Separation of Xylene Isomers and Single-Crystal X-ray Study of Aromatic Guest–Host Inclusion Compounds
ACS Applied Materials & Interfaces. 2021. V.13. N12. P.14768-14777. DOI: 10.1021/acsami.1c02812 WOS Scopus OpenAlex

Submitted:	Feb 10, 2021
Accepted:	Mar 8, 2021
Published online:	Mar 17, 2021
Published print:	Mar 31, 2021

Web of science:	WOS:000636686200087
Scopus:	2-s2.0-85103682021
OpenAlex:	W3136818954

DB	Citing
OpenAlex	42
Scopus	35
Web of science	40