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Development of Selective Catalysts for Hydroprocessing of Phenol Production By-products: Hydroquinone and Catecholстатья
- Авторы: Mukhtarova Mariyam, Golubeva Maria A., Chernyshev Kirill I., Vasiliev Alexander L., Ramazanov Dzhamalutdin N., Sinyashin Oleg G., Maximov Anton L.
- Журнал: Catalysis Letters
- Том: 156
- Номер: 1
- Год издания: 2025
- Издательство: Springer Nature
- Местоположение издательства: Switzerland
- Номер статьи: 18
- DOI: 10.1007/s10562-025-05265-5
- Аннотация: The development of a selective catalyst for hydroprocessing of phenol production by-products (hydroquinone and catechol) is an important task for increasing the yield of the target product. In this study, the use of in situ generated catalysts based on molybdenum and tungsten compounds (MoP, WP, MoOx, and WOx) was proposed for this goal. The performance of the catalysts was investigated in the hydroprocessing of each individual substrate (hydroquinone and catechol), as well as their mixture. It was shown that MoP and WP catalysts were more selective in the partial HDO of hydroquinone and catechol into phenol compared to their oxides; as a result, the selectivity for phenol was higher. The highest selectivity for phenol was 83% and 95% over MoP and WP, respectively. The hydroprocessing of a mixture of phenol, hydroquinone, and catechol (the molar ratio of phenol/hydroquinone/catechol = 7/2/1) was also explored using in situ formed MoP, WP, MoOx, and WOx catalysts. The phenol content in the product mixture after the reaction changed in the following order: WP (88%) > MoP (75%) > WOx (55%) > > MoOx (26%). All catalysts studied were characterized using XRD, XPS, TEM, and EDX methods. Thus, in situ formed MoP and WP can be considered as the suitable catalysts for the selective HDO of hydroquinone and catechol towards phenol. Moreover, the possibility of reusing catalysts MoP and WP during five runs without significant loss of activity was shown.
- Добавил в систему: Мухтарова Мариям