NDLI: Design strategies for SCR catalysts with improved N<sub>2</sub> selectivity: the significance of nano-confining effects by titanate nanotubes

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Environmental Science: Nano Vol - 4 Issue - 1

Environmental Science: Nano Vol -3

Environmental Science: Nano Vol -2

Environmental Science: Nano Vol -1

Design strategies for SCR catalysts with improved N₂ selectivity: the significance of nano-confining effects by titanate nanotubes

Content Provider	Royal Society of Chemistry (RSC)
Author	Wang, Penglu Cen, Chaoping Zeng, Wenhao Chen, Xiongbo Wang, Haiqiang Wu, Zhongbiao Fang, Ping
Copyright Year	2017
Abstract	Copper has been investigated as a promising alternative for SCR reactions. However, most Cu-based catalysts supported on zeolites, alumina or titania produced a certain amount of undesired N2O by-product. Herein, we report a strategy to tune the redox properties of copper oxides via confinement within titanate nanotubes (Cu/TNTs) and investigate their SCR activity as well as the N2 selectivity. The Cu/TNT catalyst showed an excellent NO reduction performance (above 90%) in the temperature window of 300–450 °C and the N2 selectivity could exceed 98% among the whole reaction temperature range of 150–470 °C, with a negligibly low concentration of N2O being detected. After systematic characterizations, the tuning of the chemical state of copper and oxygen, the remarkable adsorption capability, the accelerated oxidation of Cu+ to Cu2+, the lower level of NH3 oxidation and ultimately the tuning of redox properties were discovered. This work could provide a new approach to design SCR catalysts with superior catalytic reduction performance as well as excellent N2 selectivity.
Starting Page	437
Ending Page	447
Page Count	11
File Format	HTM / HTML PDF
ISSN	20518153
Volume Number	4
Issue Number	2
Journal	Environmental Science: Nano
DOI	10.1039/c6en00627b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Aluminium oxide Redox Copper Trinitrotoluene Oxygen Adsorption Ammonia
Content Type	Text
Resource Type	Article
Subject	Environmental Science Materials Science

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