Dynamics of Isobutane is a Sensitive Probe for Framework Breathing in MIL-53 (Al) MOF | Sciact - CRIS-система Института катализа

Dynamics of Isobutane is a Sensitive Probe for Framework Breathing in MIL-53 (Al) MOF Научная публикация

Журнал

PCCP: Physical Chemistry Chemical Physics
ISSN: 1463-9076 , E-ISSN: 1463-9084

Вых. Данные

Год: 2020, Том: 22, Номер: 33, Страницы: 18695-18702 Страниц : 8 DOI: 10.1039/d0cp03271a

Ключевые слова

METAL-ORGANIC FRAMEWORK; SOLID-STATE NMR; TEREPHTHALATE PHENYLENES; HYDROCARBON ADSORPTION; STRUCTURAL TRANSITION; ROTATIONAL-DYNAMICS; PHASE-TRANSITIONS; ZEOLITE ZSM-5; H-2 NMR; CO2

Авторы

Khudozhitkov Alexander E. ^1,2 , Arzumanov Sergei S. ^1,2 , Gabrienko Anton A. ^1,2 , Kolokolov Daniil I. ^1,2 , Stepanov Alexander G. ^1,2

Организации

1	Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, Novosibirsk 630090, Russia
2	Novosibirsk State University, Pirogova Street 2, Novosibirsk 630090, Russia

Информация о финансировании (2)

1	Федеральное агентство научных организаций России	0303-2016-0003
2	Российский фонд фундаментальных исследований	18-29-04009

MIL-53 (Al) is an example of a MOF with a flexible framework featuring a broad range of applications such as hydrocarbon adsorption, separation and catalysis. Such processes are strongly influenced by the flexibility of the framework and thus require monitoring of the interrelation between the guest dynamics and framework breathing events. Here, we demonstrate that breathing of the framework can be monitored by probing the isobutane guest dynamics with 2H solid-state nuclear magnetic resonance (2H NMR). We show that a stepwise change in the 2H NMR anisotropic line shape to an isotropic one occurs at 253 K, simultaneous with a notable change of the quadrupole coupling constant QAl0 of the 27Al framework aluminium atom. The stepwise variation of QAl0 is indicative of a breathing event in the MIL-53 (Al) framework structure. Such synchronous change is rationalized in terms of the sharp switch of the guest mobility from anisotropic to isotropic rotation due to the pore expansion upon structural phase transition. It is thus inferred that the dynamics of isobutane confined in the pores represents a very sensitive probe to follow breathing of the MIL-53 (Al) framework with loaded guest molecules.

Khudozhitkov A.E. , Arzumanov S.S. , Gabrienko A.A. , Kolokolov D.I. , Stepanov A.G.
Dynamics of Isobutane is a Sensitive Probe for Framework Breathing in MIL-53 (Al) MOF
PCCP: Physical Chemistry Chemical Physics. 2020. V.22. N33. P.18695-18702. DOI: 10.1039/d0cp03271a WOS Scopus РИНЦ CAPlus OpenAlex

Поступила в редакцию:	18 июн. 2020 г.
Принята к публикации:	28 июл. 2020 г.
Опубликована online:	28 июл. 2020 г.
Опубликована в печати:	7 сент. 2020 г.

Web of science:	WOS:000565157900042
Scopus:	2-s2.0-85091186899
РИНЦ:	45274225
Chemical Abstracts:	2020:1459803
OpenAlex:	W3045615676

БД	Цитирований
Web of science	6
Scopus	10
РИНЦ	6
OpenAlex	10