Journal
APPLIED SURFACE SCIENCE
Volume 440, Issue -, Pages 1037-1046Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2018.01.239
Keywords
Hollow ZSM-5; NO reduction; H-2-SCR; Platinum
Categories
Funding
- National Natural Science Foundation of China [21607162]
- Doctoral Fund of Shandong Province [BS2015HZ003]
- Qingdao Indigenous Innovation Program [16-5-1-27-jch]
- Natural Science Foundation of Yangzhou [YZ2015109]
- Open Foundation of Key Laboratory of Industrial Ecology and Environmental Engineering, MOE [KLIEEE-15-05]
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Pt nanoparticles were successfully encapsulated in hollow ZSM-5 single crystals by tetrapropylammonium hydroxide (TPAOH) hydrothermal treatment with an dissolution-recrystallization process. The prepared Pt/hollow ZSM-5 (Pt/h-ZSM-5(re)) sample exhibited the best activity and a maximum NO conversion of 84% can be achieved at 90 degrees C with N-2 selectivity of 92% (GHSV = 50,000 h(-1)). Meanwhile, Pt/ h-ZSM-5(re) catalyst exhibited excellent SO2, H2O resistance and durability, which was related to the stabilization of Pt active sites by hollow structure during H-2-SCR. It was found that the increase of NO2 concentration in the feed gas mixture led to an activity decline. In addition, the H-2-SCR reaction routes over Pt/ hollow ZSM-5 catalyst at different temperature were investigated. (C) 2018 Elsevier B.V. All rights reserved.
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