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Combined Operando XANES and NMR and ESR Spectroscopies for the Determination of VPO Dynamic States Научная публикация

Журнал Topics in Catalysis
ISSN: 1022-5528 , E-ISSN: 1572-9028
Вых. Данные Год: 2023, Том: 66, Страницы: 1161–1170 Страниц : 10 DOI: 10.1007/s11244-023-01827-2
Ключевые слова Nanoscaled VPO catalysts; Operando XANES; 51V; 27Al; 31P NMR; ESR
Авторы Guerrero-Pérez M.Olga 1 , Lapina Olga B. 2 , Rasmussen Søren B. 3 , Bañares Miguel A. 3
Организации
1 Departamento de Ingeniería Química, Universidad de Málaga, 29071, Málaga, Spain
2 Boreskov Institute of Catalysis, 630090, Novosibirsk, Russia
3 Instituto de Catálisis Y Petroleoquímica, ICP, CSIC, Marie Curie, 2, 28049, Madrid, Spain

Информация о финансировании (2)

1 Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) 0239-2021-0010
2 Ministry of Economic Affairs and Digital Transformation CTQ2014-57578-R

Реферат: Nanoscaled-VPO (vanadium phosphate oxide) catalysts have been prepared on an alumina support with the objective of obtaining crystallites of the active phase with a high surface-to-volume ratio. Since the catalysed reaction occurs at the surface, these nanoscaled catalysts allows studying surface species transformations with a minimized signal from the bulk dominion. The chemical environment and oxidation state of these species has been determined by a combination of NMR, ESR and XANES spectroscopies. The results have allowed to optimize V + P coverage and V/P molar ratio to minimize the concentration of isolated vanadium oxide species and maximize V4+ concentration. The distribution of phosphorus islands ordered and significantly distorted of tetra- and penta-coordinated aluminium sites of the catalytic support, thus shaping the catalytic material to an optimal structure for the desired partial oxidation reaction.
Библиографическая ссылка: Guerrero-Pérez M.O. , Lapina O.B. , Rasmussen S.B. , Bañares M.A.
Combined Operando XANES and NMR and ESR Spectroscopies for the Determination of VPO Dynamic States
Topics in Catalysis. 2023. V.66. P.1161–1170. DOI: 10.1007/s11244-023-01827-2 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
Принята к публикации: 3 мая 2023 г.
Опубликована online: 29 мая 2023 г.
Опубликована в печати: 1 сент. 2023 г.
Идентификаторы БД:
Web of science: WOS:000996377800001
Scopus: 2-s2.0-85160451604
РИНЦ: 54918703
Chemical Abstracts: 2023:1124844
OpenAlex: W4378717357
Цитирование в БД:
БД Цитирований
Web of science 2
OpenAlex 2
Scopus 2
РИНЦ 2
Альметрики: