Magnetic Resonance Imaging Studies on Catalyst Impregnation Processes: Discriminating Metal Ion Complexes within Millimeter-Sized γ-Al2O3 Catalyst Bodies Научная публикация
Журнал |
Journal of the American Chemical Society
ISSN: 0002-7863 , E-ISSN: 1520-5126 |
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Вых. Данные | Год: 2009, Том: 131, Номер: 18, Страницы: 6525-6534 Страниц : 10 DOI: 10.1021/ja900346k | ||||||||
Ключевые слова | Aluminum; Catalysis; Catalysts; Coordination reactions; Industrial applications; Magnetic resonance; Magnetic resonance imaging; Metal ions; Nickel | ||||||||
Авторы |
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Организации |
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Информация о финансировании (6)
1 | Президиум РАН | 5.1.1 |
2 | Российский фонд фундаментальных исследований | 07-03-12147 |
3 | Российский фонд фундаментальных исследований | 08-03-00661 |
4 | Российский фонд фундаментальных исследований | 08-03-91102 |
5 | Совет по грантам Президента Российской Федерации | МК-5135.2007.3 |
6 | Совет по грантам Президента Российской Федерации | НШ-3604.2008.3 |
Реферат:
Magnetic resonance imaging (MRI) was used to study the impregnation step during the preparation of Ni/γ-Al2O3 hydrogenation catalysts with Ni2+ metal ion present in different coordinations. The precursor complexes were [Ni(H2O)6]2+ and [Ni(edtaHx)](2−x)− (where x = 0, 1, 2 and edta = ethylenediaminetetraacetic acid), representing a nonshielded and a shielded paramagnetic complex, respectively. Due to this shielding effect of the ligands, the dynamics of [Ni(H2O)6]2+ or [Ni(edtaHx)](2−x)− were visualized applying T2 or T1 image contrast, respectively. MRI was applied in a quantitative manner to calculate the [Ni(H2O)6]2+ concentration distribution after impregnation when it was present alone in the impregnation solution, or together with the [Ni(edtaHx)](2−x)− species. Moreover, the combination of MRI with UV−vis microspectroscopy allowed the visualization of both species with complementary information on the dynamics and adsorption/desorption phenomena within γ-Al2O3 catalyst bodies. These phenomena yielded nonuniform Ni distributions after impregnation, which are interesting for certain industrial applications.
Библиографическая ссылка:
Espinosa-Alonso L.
, Lysova A.A.
, de Peinder P.
, de Jong K.P.
, Koptyug I.V.
, Weckhuysen B.M.
Magnetic Resonance Imaging Studies on Catalyst Impregnation Processes: Discriminating Metal Ion Complexes within Millimeter-Sized γ-Al2O3 Catalyst Bodies
Journal of the American Chemical Society. 2009. V.131. N18. P.6525-6534. DOI: 10.1021/ja900346k WOS Scopus РИНЦ
Magnetic Resonance Imaging Studies on Catalyst Impregnation Processes: Discriminating Metal Ion Complexes within Millimeter-Sized γ-Al2O3 Catalyst Bodies
Journal of the American Chemical Society. 2009. V.131. N18. P.6525-6534. DOI: 10.1021/ja900346k WOS Scopus РИНЦ
Даты:
Поступила в редакцию: | 16 янв. 2009 г. |
Опубликована online: | 22 апр. 2009 г. |
Опубликована в печати: | 13 мая 2009 г. |
Идентификаторы БД:
Web of science | WOS:000265939200054 |
Scopus | 2-s2.0-70149105022 |
РИНЦ | 41743520 |
Chemical Abstracts | 2009:485313 |
Chemical Abstracts (print) | 150:432685 |
OpenAlex | W2106944434 |