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Mechanisms of Methylenecyclobutane Hydrogenation over Supported Metal Catalysts Studied by Parahydrogen‐Induced Polarization Technique Научная публикация

Журнал ChemPhysChem
ISSN: 1439-4235 , E-ISSN: 1439-7641
Вых. Данные Год: 2022, Том: 23, Номер: 7, Номер статьи : e202200072, Страниц : 11 DOI: 10.1002/cphc.202200072
Ключевые слова heterogeneous catalysis • hydrogenation • hyperpolarization • methylenecyclobutane • NMR spectroscopy • parahydrogen
Авторы Salnikov Oleg G. 1,2,3 , Burueva Dudari B. 2,3 , Kovtunova Larisa M. 1,2,3 , Bukhtiyarov Valerii I. 1,3 , Kovtunov Kirill V. 2,3 , Koptyug Igor V. 2
Организации
1 Boreskov Institute of Catalysis SB RAS, 5 Acad. Lavrentiev Pr., 630090 Novosibirsk, Russia
2 International Tomography Center SB RAS, 3A Institutskaya St., 630090 Novosibirsk, Russia
3 Department of Natural Sciences, Novosibirsk State University, 2 Pirogova St., 630090 Novosibirsk, Russia

Информация о финансировании (3)

1 Российский фонд фундаментальных исследований 19-33-60045
2 Российский научный фонд 21-73-10105 (121121600301-4)
3 Российский фонд фундаментальных исследований 19-29-10003 (АААА-А19-119100890052-8)

Реферат: In this work the mechanism of methylenecyclobutane hydrogenation over titania-supported Rh, Pt and Pd catalysts was investigated using parahydrogen-induced polarization (PHIP) technique. It was found that methylenecyclobutane hydrogenation leads to formation of a mixture of reaction products including cyclic (1-methylcyclobutene, methylcyclobutane), linear (1-pentene, cis-2-pentene, trans-2-pentene, pentane) and branched (isoprene, 2-methyl-1-butene, 2-methyl-2-butene, isopentane) compounds. Generally, at lower temperatures (150–350 °C) the major reaction product was methylcyclobutane while higher temperature of 450 °C favors formation of branched products isoprene, 2-methyl-1-butene and 2-methyl-2-butene. PHIP effects were detected for all reaction products except methylenecyclobutane isomers 1-methylcyclobutene and isoprene implying that the corresponding compounds can incorporate two atoms from the same parahydrogen molecule in a pairwise manner in the course of the reaction in particular positions. The mechanisms were proposed for the formation of these reaction products based on PHIP results.
Библиографическая ссылка: Salnikov O.G. , Burueva D.B. , Kovtunova L.M. , Bukhtiyarov V.I. , Kovtunov K.V. , Koptyug I.V.
Mechanisms of Methylenecyclobutane Hydrogenation over Supported Metal Catalysts Studied by Parahydrogen‐Induced Polarization Technique
ChemPhysChem. 2022. V.23. N7. e202200072 :1-11. DOI: 10.1002/cphc.202200072 WOS Scopus РИНЦ CAPlusCA PMID OpenAlex
Даты:
Поступила в редакцию: 28 янв. 2022 г.
Опубликована online: 31 янв. 2022 г.
Опубликована в печати: 5 апр. 2022 г.
Идентификаторы БД:
Web of science: WOS:000766103300001
Scopus: 2-s2.0-85126069964
РИНЦ: 48191270
Chemical Abstracts: 2022:659724
Chemical Abstracts (print): 178:174832
PMID (PubMed): 35099100
OpenAlex: W4210293819
Цитирование в БД:
БД Цитирований
Scopus 5
Web of science 5
РИНЦ 3
OpenAlex 6
Альметрики: