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Bimetallic AgPd/UiO-66 hybrid catalysts for propylene glycol oxidation into lactic acidстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 20 января 2021 г.
- Авторы: Ten S, Torbina V.V., Zaikovskii V.I., Kulinich S.A., Vodyankina O.V.
- Журнал: Materials
- Том: 13
- Год издания: 2020
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Номер статьи: 5471
- DOI: 10.3390/ma13235471
- Аннотация: Different methods (the wetness impregnation of Ag and Pd precursors dissolved inwater or acetonitrile solution, and the double solvent impregnation technique) were employedto immobilize Ag–Pd nanoparticles (NPs) into the pores of the microporous zirconium-basedmetal-organic framework known as UiO-66. The obtained materials were characterized by usingnitrogen adsorption-desorption at 196 C, powder X-ray diffraction, UV-Vis diffusion reflectance spectroscopy, and transition electron microscopy measurements. Special attention was paid to the acid and redox properties of the obtained materials, which were studied by using temperature-programmed desorption of ammonia (TPD-NH3) and temperature-programmed reduction (TPR-H2) methods. The use of a drying procedure prior to reduction was found to result in metallic NPs which, most likely, formed on the external surface and were larger than corresponding voids of the metal-organic framework. The formation of Ag–Pd alloy or monometallic Ag and Pd depended on the nature of both metal precursors and the impregnation solvent used. Catalytic activity of the AgPd/UiO-66 materials in propylene glycol oxidation was found to be a result of synergistic interaction between the components in AgPd alloyed NPs immobilized in the pore space and on the external surface of UiO-66. The key factor for consistent transformation of propylene glycol into lactic acid was theproximity between redox and acid-base species.
- Добавил в систему: Кулинич Сергей Алексеевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | full text | 115_Mater_2020.pdf | 3,5 МБ | 19 января 2021 [skulinich] |