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Abstract：
The hydrothermal stability of the CuSSZ-13 samples with various Si/Al ratios was examined. The NO conversions in the NH3-SCR and NH3 oxidation were measured. Physicochemical properties of the samples were characterized by means of a number of analytical techniques. It is shown that the NH3-SCR activity and hydrothermal stability of the CuSSZ-13 samples decreased with the rise in Si/Al ratio. Such decreases were attributed to the drop in the amount of the isolated Cu2+ in the D6R and CHA cage of the CuSSZ-13 samples. Part of the isolated Cu2+ ions were transformed to CuO after hydrothermal aging treatment, especially in the high-Si/Al-ratio samples. A large amount of the aggregated CuO destroyed the skeleton structure of SSZ-13, leading to the deactivation of the samples. (C) 2017 Elsevier B.V. All rights reserved.
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APPLIED SURFACE SCIENCE
ISSN： 0169-4332
Year： 2017
Volume： 419
Page： 382-392
6 . 7 0 0
JCR@2022
ESI Discipline： MATERIALS SCIENCE;
ESI HC Threshold：287
CAS Journal Grade：1
Cited Count：
WoS CC Cited Count： 94
SCOPUS Cited Count： 103
ESI Highly Cited Papers on the List： 0 Unfold All
WanFang Cited Count：
Chinese Cited Count：
30 Days PV： 7
