Parahydrogen-Induced Polarization in Gas-Phase Heterogeneous Hydrogenation of Epoxides | Sciact - CRIS-система Института катализа

Parahydrogen-Induced Polarization in Gas-Phase Heterogeneous Hydrogenation of Epoxides Научная публикация

Журнал

The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455

Вых. Данные

Год: 2023, Том: 127, Номер: 49, Страницы: 23634–23644 Страниц : 11 DOI: 10.1021/acs.jpcc.3c05059

Авторы

Salnikov Oleg G. ¹ , Pokochueva Ekaterina V. ^1,3 , Burueva Dudari B. ¹ , Kovtunova Larisa M. ^2,1 , Kovtunov Kirill V. ¹ , Koptyug Igor V. ¹

Организации

1	International Tomography Center SB RAS, 3A Institutskaya St., 630090 Novosibirsk, Russia
2	Boreskov Institute of Catalysis SB RAS, 5 Acad. Lavrentiev Pr., 630090 Novosibirsk, Russia
3	Universite Claude Bernard Lyon 1, CRMN UMR-5082, CNRS, ENS Lyon, Villeurbanne 69100, France

Информация о финансировании (3)

1	Совет по грантам Президента Российской Федерации	МК-2826.2022.1.3
2	Российский научный фонд	23-23-00394
3	Российский научный фонд	19-13-00172-П

Hydrogenation of epoxides is a reaction of both fundamental and practical importance. Herein, gas-phase heterogeneous hydrogenation of saturated and unsaturated epoxides over titania-supported Pt, Pd, and Rh catalysts was investigated using the parahydrogen-induced polarization (PHIP) technique. Hydrogenation of saturated epoxides (ethylene oxide and propylene oxide) yielded alcohols, carbonyl compounds, alkenes, and alkanes. While all three catalysts under study isomerized epoxides to carbonyl compounds in the presence of H2, only Pd/TiO2 showed catalytic activity under inert atmosphere, implying that on Pt and Rh catalysts, the epoxide C–O bond can be cleaved only simultaneously with H atom addition to form alkoxy species. PHIP effects were detected for propane and propylene but not for alcohols. Hydrogenation of bifunctional epoxide 3,4-epoxy-1-butene yielded 11 reaction products. Adsorption of the reactant via its C═C bond is followed by hydrogen addition, resulting in the formation of 1,2-epoxybutane, which does not react further. Alternatively, the reactant can be adsorbed via both its C═C bond and the oxygen atom, leading to the formation of crotonaldehyde, butanal, crotyl alcohol, 1-butanol, methyl 1-propenyl ether, methyl propyl ether, 1,3-butadiene, 1-butene, 2-butene, and butane. Based on the PHIP effects observation, the mechanisms of the corresponding processes were proposed.

Salnikov O.G. , Pokochueva E.V. , Burueva D.B. , Kovtunova L.M. , Kovtunov K.V. , Koptyug I.V.
Parahydrogen-Induced Polarization in Gas-Phase Heterogeneous Hydrogenation of Epoxides
The Journal of Physical Chemistry C. 2023. V.127. N49. P.23634–23644. DOI: 10.1021/acs.jpcc.3c05059 WOS Scopus РИНЦ CAPlusCA OpenAlex

Поступила в редакцию:	27 июл. 2023 г.
Принята к публикации:	21 нояб. 2023 г.
Опубликована online:	6 дек. 2023 г.
Опубликована в печати:	14 дек. 2023 г.

Web of science:	WOS:001125232200001
Scopus:	2-s2.0-85180113180
РИНЦ:	56738123
Chemical Abstracts:	2023:2513605
Chemical Abstracts (print):	185:90503
OpenAlex:	W4389388387

БД	Цитирований
OpenAlex	1
Scopus	1
Web of science	1
РИНЦ	1