Effect of Silver Cations on Propene Aromatization on H-ZSM-5 Zeolite Investigated by 13C MAS NMR and FTIR Spectroscopy Научная публикация
| Журнал |
ACS Catalysis
ISSN: 2155-5435 |
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| Вых. Данные | Год: 2023, Том: 13, Номер: 15, Страницы: 10248-10260 Страниц : 13 DOI: 10.1021/acscatal.3c01591 | ||
| Ключевые слова | propene; aromatization; silver-modified zeolite; ZSM-5; solid-state NMR; FTIR spectroscopy; Bronsted acid sites | ||
| Авторы |
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| Организации |
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Информация о финансировании (2)
| 1 | Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) | 0239-2021-0003 |
| 2 | Российский научный фонд | 21-73-10013 |
Реферат:
Silver-modified zeolites exhibit high selectivity foralkene transformationto aromatic hydrocarbons. To inquire into the effect of silver cationsin zeolite on the pathways of propene aromatization, the transformationsof propene on H-ZSM-5 and Ag/H-ZSM-5 zeolites have been investigatedby C-13 MAS NMR and Fourier-transform infrared spectroscopy.It is established that propene transformation on H-ZSM-5 at 296-773K occurs on Bronsted acid sites (BAS) by the mechanism of conjunctpolymerization, as evidenced by the detection of cyclopentenyl cationintermediates. On the contrary, propene forms very stable & pi;-complexeswith Ag+ sites on Ag/H-ZSM-5, which prevents the alkenefrom converting on BAS at 296-623 K. At T & GE;623 K, transformation proceeds with the assistance of silver cationsvia carbanionic allyl-like intermediate formation. Thus, the changein the reaction mechanism from conjunct polymerization on BAS to themechanism with Ag+ ion involvement provides high selectivityfor aromatic hydrocarbons on Ag+/H-ZSM-5 zeolite.
Библиографическая ссылка:
Lashchinskaya Z.N.
, Gabrienko A.A.
, Prosvirin I.P.
, Toktarev A.V.
, Stepanov A.G.
Effect of Silver Cations on Propene Aromatization on H-ZSM-5 Zeolite Investigated by 13C MAS NMR and FTIR Spectroscopy
ACS Catalysis. 2023. V.13. N15. P.10248-10260. DOI: 10.1021/acscatal.3c01591 WOS Scopus РИНЦ CAPlus OpenAlex
Effect of Silver Cations on Propene Aromatization on H-ZSM-5 Zeolite Investigated by 13C MAS NMR and FTIR Spectroscopy
ACS Catalysis. 2023. V.13. N15. P.10248-10260. DOI: 10.1021/acscatal.3c01591 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
| Поступила в редакцию: | 7 апр. 2023 г. |
| Принята к публикации: | 12 июл. 2023 г. |
| Опубликована online: | 21 июл. 2023 г. |
| Опубликована в печати: | 4 авг. 2023 г. |
Идентификаторы БД:
| Web of science: | WOS:001033840000001 |
| Scopus: | 2-s2.0-85166763137 |
| РИНЦ: | 54372689 |
| Chemical Abstracts: | 2023:1508513 |
| OpenAlex: | W4385147627 |