Dynamics of Propene and Propane in ZIF-8 Probed by Solid-State 2H NMR Научная публикация
| Журнал |
PCCP: Physical Chemistry Chemical Physics
ISSN: 1463-9076 , E-ISSN: 1463-9084 |
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| Вых. Данные | Год: 2020, Том: 22, Номер: 10, Страницы: 5976-5984 Страниц : 9 DOI: 10.1039/d0cp00270d | ||||||
| Ключевые слова | METAL-ORGANIC FRAMEWORKS; ZEOLITIC IMIDAZOLATE FRAMEWORKS; LIGHT-HYDROCARBONS; SEPARATION; DIFFUSION; ADSORPTION; ETHENE/ETHANE; TEMPERATURE; MIXTURES; MOBILITY | ||||||
| Авторы |
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| Организации |
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Информация о финансировании (4)
| 1 | German Research Foundation | HA 1893/22-1 |
| 2 | Федеральное агентство научных организаций России | 0303-2016-0003 |
| 3 | Российский фонд фундаментальных исследований | 18-29-04009 |
| 4 | Российский фонд фундаментальных исследований | 18-33-00048 |
Реферат:
We present a detailed 2H NMR characterization of molecular mobility of propene and propane propagating though the microporous ZIF-8, a zeolitic imidazolate framework renowned for its outstandingly high separation selectivity for industrially relevant propene/propane mixtures. Experimental characterization of both propene and propane diffusivity in ZIF-8 has been provided. Using 2H NMR spin relaxation analysis, the motional mechanisms for propene and propane guests trapped within the ZIF-8 framework have been elucidated. Kinetic parameters for each type of motion were derived. The characteristic times for microscopic translational diffusion and activation barriers (EC3H8 = 38 kJ mol-1, EC3H6 = 13.5 kJ mol-1) for propane and propene diffusivities have been estimated. A notable difference in the observed activation barriers emphasizes that the ZIF-8 window crossing is associated with the "gate-opening" and represents an extremely shape selective process. Finally, we show that the 2H NMR technique is capable of providing reliable information on microscopic diffusivity in the ZIF-8 MOF even for molecules with slow diffusivity (<10-14 m2 s-1). This journal is © the Owner Societies.
Библиографическая ссылка:
Khudozhitkov A.E.
, Arzumanov S.S.
, Kolokolov D.I.
, Freude D.
, Stepanov A.G.
Dynamics of Propene and Propane in ZIF-8 Probed by Solid-State 2H NMR
PCCP: Physical Chemistry Chemical Physics. 2020.
V.22. N10. P.5976-5984. DOI: 10.1039/d0cp00270d
WOS
Scopus
РИНЦ
CAPlusCA
PMID
OpenAlex
Dynamics of Propene and Propane in ZIF-8 Probed by Solid-State 2H NMR
PCCP: Physical Chemistry Chemical Physics. 2020.
V.22. N10. P.5976-5984. DOI: 10.1039/d0cp00270d
WOS
Scopus
РИНЦ
CAPlusCA
PMID
OpenAlex
Файлы:
Полный текст от издателя
Даты:
| Поступила в редакцию: | 16 янв. 2020 г. |
| Принята к публикации: | 21 февр. 2020 г. |
| Опубликована online: | 21 февр. 2020 г. |
| Опубликована в печати: | 14 мар. 2020 г. |
Идентификаторы БД:
| Web of science: | WOS:000528810000056 |
| Scopus: | 2-s2.0-85081733060 |
| РИНЦ: | 43251694 |
| Chemical Abstracts: | 2020:348041 |
| Chemical Abstracts (print): | 172:316940 |
| PMID (PubMed): | 32123893 |
| OpenAlex: | W3103118897 |