Pairwise Parahydrogen Addition over Molybdenum Carbide Catalysts Научная публикация
| Конференция |
XI International Conference Mechanisms of Catalytic Reactions 07-11 окт. 2019 , Сочи |
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| Журнал |
Topics in Catalysis
ISSN: 1022-5528 , E-ISSN: 1572-9028 |
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| Вых. Данные | Год: 2020, Том: 63, Номер: 1-2, Страницы: 2-11 Страниц : 10 DOI: 10.1007/s11244-019-01211-z | ||||||
| Ключевые слова | Parahydrogen-induced polarization Parahydrogen Heterogeneous hydrogenation Molybdenum Carbide catalysts | ||||||
| Авторы |
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| Организации |
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Информация о финансировании (6)
| 1 | Российский фонд фундаментальных исследований | 19-43-540004 (АААА-А19-119090590009-9) |
| 2 | Российский фонд фундаментальных исследований | 19-29-10003 (АААА-А19-119100890052-8) |
| 3 | Российский фонд фундаментальных исследований | 18-33-20019 (АААА-А18-118101090008-1) |
| 4 | Федеральное агентство научных организаций России | 0333-2016-0002 (АААА-А16-116121510087-5) |
| 5 | Российский научный фонд | 19-13-00172 |
| 6 | Федеральное агентство научных организаций России | 0303-2016-0012 (V.47.1.4.) |
Реферат:
Herein, we have shown that the phase composition of molybdenum carbide catalysts has a pronounced effect on the pairwise hydrogen addition selectivity in the gas-phase propyne hydrogenation with parahydrogen. Molybdenum carbide catalysts were prepared using either the Pechini method or temperature-programmed reduction with CH4/H2 carburizing gas mixture. The structures of carbide catalysts were characterized by high-resolution transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. It was found that molybdenum carbide prepared by the Pechini method predominantly contains a face-centered-cubic MoC1−x phase, while the TPR method yields a hexagonal-close-packed Mo2C phase. By varying the gas hourly space velocity of carburizing gas mixture, the defected phase can be produced. Computer modeling for XRD patterns was used to identify the phase composition of Mo2C catalysts. All the catalysts were found to be active in pairwise hydrogen addition; however the hcp-Mo2C phase exhibits a higher contribution of pairwise H2 addition providing ~ 150-fold proton NMR signal enhancement.
Библиографическая ссылка:
Burueva D.B.
, Smirnov A.A.
, Bulavchenko O.A.
, Prosvirin I.P.
, Gerasimov E.Y.
, Yakovlev V.A.
, Kovtunov K.V.
, Koptyug I.V.
Pairwise Parahydrogen Addition over Molybdenum Carbide Catalysts
Topics in Catalysis. 2020. V.63. N1-2. P.2-11. DOI: 10.1007/s11244-019-01211-z WOS Scopus РИНЦ CAPlus OpenAlex
Pairwise Parahydrogen Addition over Molybdenum Carbide Catalysts
Topics in Catalysis. 2020. V.63. N1-2. P.2-11. DOI: 10.1007/s11244-019-01211-z WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
| Опубликована online: | 14 дек. 2019 г. |
| Опубликована в печати: | 1 мар. 2020 г. |
Идентификаторы БД:
| Web of science: | WOS:000519929000002 |
| Scopus: | 2-s2.0-85076839543 |
| РИНЦ: | 43223243 |
| Chemical Abstracts: | 2019:2406742 |
| OpenAlex: | W2995668647 |