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Abstract：
The Ce-Cu-SAPO-18 samples were prepared by the ion exchange method. Physicochemical properties of the samples were systematically characterized by a number of analytical techniques, and Ce doping and hydrothermal temperature effects on NH3-SCR activity of Cu-SAPO-18 were also investigated. The results show that doping of Ce increased NH3-SCR activity and hydrothermal stability of the Cu-SAPO-18 sample. After Ce doping, a more amount of the isolated Cu2+ ions entered the D6R and the catalyst structure was more stable. The structure and catalytic activity of Ce-Cu-SAPO-18 remained almost intact after hydrothermal aging at 650 degrees C. After hydrothermal aging at 850 degrees C, however, the structure of Ce-Cu-SAPO-18 was greatly destroyed, and its catalytic activity declined remarkably. The high-temperature hydrothermal aging treatment led to decreases in amount of the isolated Cu2+ ions and acidic sites, destroying in the zeolitic structure, and drop in NH3-SCR activity.
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CATALYSIS SURVEYS FROM ASIA
ISSN： 1571-1013
Year： 2020
Issue： 2
Volume： 24
Page： 134-142
3 . 0 0 0
JCR@2022
ESI Discipline： CHEMISTRY;
ESI HC Threshold：139
Cited Count：
WoS CC Cited Count： 6
SCOPUS Cited Count： 9
ESI Highly Cited Papers on the List： 0 Unfold All
WanFang Cited Count：
Chinese Cited Count：
30 Days PV： 3
