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Tuning the Mechanism of H/D Exchange for Isobutane on H‐BEA by Loading Zn Species in Zeolite Научная публикация

Журнал Chemistry - A European Journal
ISSN: 0947-6539 , E-ISSN: 1521-3765
Вых. Данные Год: 2023, Том: 29, Номер: 5, Номер статьи : e202202962, Страниц : 9 DOI: 10.1002/chem.202202962
Ключевые слова isobutane; H/D exchange; mechanism; zeolite; NMR spectroscopy in situ
Авторы Arzumanov Sergei S. 1 , Gabrienko Anton A. 1 , Freude Dieter 2 , Haase Jürgen 2 , Stepanov Alexander G. 1
Организации
1 Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, Novosibirsk 630090, Russia
2 Universität Leipzig, Fakultät für Physik und Geowissenschaften, Linnéstr. 5, 04103 Leipzig, Germany

Информация о финансировании (2)

1 German Research Foundation HA 1893/22-1
2 Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) 0239-2021-0003

Реферат: Kinetics of H/D hydrogen exchange between deuterated isobutane- d 10 and Brønsted acid sites (BAS) of three zeolite samples (H-BEA, ZnO/H-BEA, Zn 2+ /H-BEA) were monitored with 1 H MAS NMR in situ at 343–468 K. The regioselective H/D exchange in the methyl groups detected on H-BEA can be rationalized in terms of the mechanism of indirect exchange, which involves protonation of the intermediate olefin and further hydride abstraction from the other alkane molecule by the formed carbenium ion. Loading of Zn species in zeolite results in decrease of the rate and increase of the activation energy of the exchange. The loaded Zn species provide the tuning effect on the reaction occurrence, changing the mechanism from the indirect one to the mechanism of the direct exchange.
Библиографическая ссылка: Arzumanov S.S. , Gabrienko A.A. , Freude D. , Haase J. , Stepanov A.G.
Tuning the Mechanism of H/D Exchange for Isobutane on H‐BEA by Loading Zn Species in Zeolite
Chemistry - A European Journal. 2023. V.29. N5. e202202962 :1-9. DOI: 10.1002/chem.202202962 WOS Scopus РИНЦ CAPlus PMID OpenAlex
Даты:
Поступила в редакцию: 21 сент. 2022 г.
Принята к публикации: 28 окт. 2022 г.
Опубликована online: 30 окт. 2022 г.
Опубликована в печати: 24 янв. 2023 г.
Идентификаторы БД:
Web of science: WOS:000896465900001
Scopus: 2-s2.0-85143421565
РИНЦ: 54016024
Chemical Abstracts: 2022:3078317
PMID (PubMed): 36310393
OpenAlex: W4307777298
Цитирование в БД:
БД Цитирований
Scopus 1
Web of science 1
Альметрики: