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Iron‐Containing SSZ‐39 (AEI) Zeolite: An Active and Stable High‐Temperature NH 3 ‐SCR Catalyst
Author(s) -
Martín Nuria,
Vennestrøm Peter N. R.,
Thøgersen Joakim R.,
Moliner Manuel,
Corma Avelino
Publication year - 2017
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201601627
Subject(s) - zeolite , catalysis , selective catalytic reduction , ammonia , chemistry , hydrothermal synthesis , inorganic chemistry , hydrothermal circulation , chemical engineering , organic chemistry , engineering
The preparation of the iron‐containing SSZ‐39 zeolite is described for the first time through two different synthesis methods: post‐synthetic cation exchange and one‐pot synthesis. The nature and stability of the iron species within the different Fe‐SSZ‐39 materials have been studied through different characterization techniques, and their catalytic activity has been evaluated for the selective catalytic reduction (SCR) of NO x with ammonia. The directly synthetized Fe‐SSZ‐39 performs better for the SCR of NO x with ammonia than other related Fe‐zeolites, particularly at elevated reaction temperatures (above 450 °C), and presents improved hydrothermal stability when aged under severe conditions.