Selective adsorption of ethane and methane on zeolite-like imidazolate frameworks ZIF-8 and ZIF-67: effect of lattice coordination centers

Selective adsorption of ethane and methane on zeolite-like imidazolate frameworks ZIF-8 and ZIF-67: effect of lattice coordination centers Научная публикация

Журнал

Adsorption-journal of The International Adsorption Society
ISSN: 1572-8757 , E-ISSN: 0929-5607

Вых. Данные

Год: 2024, Том: 30, Страницы: 1239-1249 Страниц : 11 DOI: 10.1007/s10450-024-00505-3

Авторы

Deyko G.S. ¹ , Isaeva V.I. ¹ , Glukhov L.M. ¹ , Chernyshev V.V. ^2,3 , Arkhipov D.A. ¹ , Kapustin G.I. ¹ , Kravtsov L.A. ^1,2 , Kustov L.M. ^1,2

Организации

1	Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 47, Moscow, 119991, Russia
2	Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow, 119991, Russia
3	A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky Prospekt 31, p. 4, Moscow 119071, Russia

Zeolitic imidazolate frameworks based on 2-methylimidazolate linkers with different particle size (200–1000 nm) and controlled content of Zn2+ and Co2+ ions have been synthesized by microwave (MW) assisted technique according to original procedures and room-temperature method. The produced materials including monometallic ZIF-8 and ZIF-67 samples, bimetallic ZIF-Zn/Co (or ZIF-8/ZIF-67) system, and “core-shell” ZIF-8@ZIF-67 and ZIF-67@ZIF-8 composites have been studied in the practically relevant process of selective adsorption of ethane and methane (25 °C). The adsorption isotherms for both gases on the obtained ZIF materials were measured in a wide pressure range (1–20 atm) for the first time. For ZIF-67, the isosteric heats of adsorption for both gases were obtained also for the first time. It was found that the nature of the coordination centers in the ZIF frameworks influences their adsorption characteristics. Thus, the obtained materials with Co2+ ions show an increased adsorption capacity towards ethane, which exceEDX the capacity measured for the Zn2+-based samples, while the highest methane adsorption value is achieved on a “core-shell” ZIF-67@ZIF-8 composite.

Deyko G.S. , Isaeva V.I. , Glukhov L.M. , Chernyshev V.V. , Arkhipov D.A. , Kapustin G.I. , Kravtsov L.A. , Kustov L.M.
Selective adsorption of ethane and methane on zeolite-like imidazolate frameworks ZIF-8 and ZIF-67: effect of lattice coordination centers
Adsorption-journal of The International Adsorption Society. 2024. V.30. P.1239-1249. DOI: 10.1007/s10450-024-00505-3 WOS Scopus OpenAlex

Web of science:	WOS:001242507500004
Scopus:	2-s2.0-85195424339
OpenAlex:	W4399471019

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