High activity and wide temperature window of Fe‐Cu‐SSZ‐13 in the selective catalytic reduction of NO with ammonia
- 14 July 2015
- journal article
- research article
- Published by Wiley in AIChE Journal
- Vol. 61 (11) , 3825-3837
Abstract
Fe‐Cu‐SSZ‐13 catalysts were prepared by aqueous solution ion‐exchange method based on the one‐pot synthesized Cu‐SSZ‐13. The catalysts were applied to the selective catalytic reduction (SCR) of NO with NH3 and characterized by the means of XRD, UV‐Vis, EPR, XPS, NH3‐TPD, and so on. The selected Fe‐Cu‐SSZ‐13‐1 catalyst exhibited the high NO conversion (>90%) in the wide temperature range (225–625°C), which also showed good N2 selectivity and excellent hydrothermal stability. The results of XPS showed that the Cu and Fe species were in the internal and outer parts of the SSZ‐13 crystals, respectively. The results of UV‐Vis and EPR indicated that the monomeric Cu2+ ions coordinated to three oxygen atoms on the six‐ring sites and Fe monomers are the real active species in the NH3‐SCR reaction. Furthermore, the influence of intracrystalline mass‐transfer limitations on the Fe‐Cu‐SSZ‐13 catalysts is related to the location of active species in the SSZ‐13 crystals. © 2015 American Institute of Chemical Engineers AIChE J, 61: 3825–3837, 2015Keywords
Funding Information
- National Natural Science Foundation of China (21173270, 21376261, 21177160, 2013AA065302)
- Doctor Select Foundation (20130007110007)
- Beijing NSF (2142027)
This publication has 60 references indexed in Scilit:
- Inhibitory effect of NO2 on the selective catalytic reduction of NOx with NH3 over one-pot-synthesized Cu–SSZ-13 catalystCatalysis Science & Technology, 2014
- Excellent Performance of One-Pot Synthesized Cu-SSZ-13 Catalyst for the Selective Catalytic Reduction of NOx with NH3Environmental Science & Technology, 2013
- Synthesis Strategies for Preparing Useful Small Pore Zeolites and Zeotypes for Gas Separations and CatalysisChemistry of Materials, 2013
- Effects of hydrothermal aging on NH3-SCR reaction over Cu/zeolitesJournal of Catalysis, 2012
- Design and Synthesis of a Catalytically Active Cu-SSZ-13 Zeolite from a Copper-Amine Complex TemplateChinese Journal of Catalysis, 2012
- Designed copper–amine complex as an efficient template for one-pot synthesis of Cu-SSZ-13 zeolite with excellent activity for selective catalytic reduction of NO
x
by NH 3Chemical Communications, 2011
- The ammonia selective catalytic reduction activity of copper-exchanged small-pore zeolitesApplied Catalysis B: Environment and Energy, 2011
- Excellent activity and selectivity of Cu-SSZ-13 in the selective catalytic reduction of NOx with NH3Journal of Catalysis, 2010
- Copper Coordination in Cu-SSZ-13 and Cu-SSZ-16 Investigated by Variable-Temperature XRDThe Journal of Physical Chemistry C, 2009
- Mechanism of the Selective Catalytic Reduction of Nitric Oxide by Ammonia Elucidated by in Situ On-Line Fourier Transform Infrared SpectroscopyScience, 1994