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Pd/SAPO-41 Bifunctional Catalysts with Enhanced Pd Dispersion Prepared by Ultrasonic-Assisted Impregnation: High Selectivity for n-Hexadecane Hydroisomerizationстатья
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: 3 марта 2021 г.
- Авторы: Jia Guozhi, Maximov A.L., Wang Wei, Bai Xuefeng, Wei Xiaomeng, Su Xiaofang, Li Tong, Guo Chunmu, Wu Wei
- Журнал: Russian Journal of Applied Chemistry
- Том: 93
- Номер: 4
- Год издания: 2020
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 502
- Последняя страница: 511
- DOI: 10.1134/s1070427220040047
- Аннотация: Two series of Pd/SAPO-41 bifunctional catalysts were synthesized via the ultrasonic-assisted impregnation (xPd/S41-U) with different treating time and conventional incipient wetness impregnation methods (0.30Pd/S41-I) on the SAPO-41 molecular sieve, respectively. The physico-chemical property of the synthesized SAPO-41 and prepared catalysts were studied by XRD, SEM, ICP, N2 physical adsorption, H2 chemisorption and Py-IR measurements. The catalytic performance for the n-hexadecane hydroisomerization over all catalysts was investigated. The characteristic results demonstrated that the xPd/S41-U catalysts showed stronger BrØnsted acidity compared with the 0.30Pd/S41-I catalyst. Also, the Pd dispersion of the xPd/S41-U catalysts was almost two times higher than that of the 0.30Pd/S41-I catalyst, which resulted to more Pd cluster to enter into the micropores of the SAPO-41 molecular sieve. Additionally, the 0.30Pd/S41-U catalyst with 0.30 wt.% Pd loading showed promoted catalytic performance than that of the 0.30Pd/S41-I catalyst with the same Pd loading due to the stronger metal function and more favorable metal-acid balance caused by the larger CPd/CH+ ratio.
- Добавил в систему: Захарян Елена Михайловна