دورية أكاديمية
Insights into Synergy of Copper and Acid Sites for Selective Catalytic Reduction of NO with Ammonia over Zeolite Catalysts
| العنوان: | Insights into Synergy of Copper and Acid Sites for Selective Catalytic Reduction of NO with Ammonia over Zeolite Catalysts |
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| المؤلفون: | Wenyi Zhao, Menglin Shen, Yueran Zhu, Xudong Ren, Xingang Li |
| المصدر: | Catalysts, Vol 13, Iss 2, p 301 (2023) |
| بيانات النشر: | MDPI AG, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Chemical technology LCC:Chemistry |
| مصطلحات موضوعية: | NH3-SCR, zeolite, copper cations, acid sites, NO3− species, Chemical technology, TP1-1185, Chemistry, QD1-999 |
| الوصف: | Herein, we report the function of copper sites in Cu-SSZ-13, Cu-ZSM-5 and Cu-Beta catalysts with the same Si/Al ratio (14) and Cu/Al ratio (0.4) on selective catalytic reduction of NO with NH3 (NH3-SCR) and reveal the relationship between active sites (Cu sites, acid sites) and catalytic activity. The results show that the amount of isolated Cu2+ ions in the catalysts directly determines the formation of strong Lewis acid sites and reaction intermediate NO3− ions, thus affecting the low-temperature SCR performance, while the amount of highly stable Cu+ ions and Brønsted acid sites is related to the high-temperature SCR performance of the catalysts. Consequently, it contains enough isolated Cu2+ ions, highly stable Cu+ ions and Brønsted acid sites, which endows Cu-SSZ-13 with excellent NH3-SCR activity. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2073-4344 |
| Relation: | https://www.mdpi.com/2073-4344/13/2/301; https://doaj.org/toc/2073-4344 |
| DOI: | 10.3390/catal13020301 |
| URL الوصول: | https://doaj.org/article/5d1368d48d84457f8fc39c7f2e19c4b8 |
| رقم الأكسشن: | edsdoj.5d1368d48d84457f8fc39c7f2e19c4b8 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20734344 |
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| DOI: | 10.3390/catal13020301 |