NOx Trap Catalysts and Technologies: Fundamentals and Industrial Applications
Chapter 14: New deNOx Concept by Fast Reductants Injection Pulse Upstream NSR
Published:13 Jun 2018
Special Collection: 2018 ebook collection , ECCC Environmental eBooks 1968-2022Series: Catalysis Series
Y. Bisaiji and K. Yoshida, in NOx Trap Catalysts and Technologies: Fundamentals and Industrial Applications, ed. L. Lietti and L. Castoldi, The Royal Society of Chemistry, 2018, ch. 14, pp. 407-429.
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In this chapter, a new deNOx concept by fast reductants injection pulse upstream NSR is introduced. This method has a wider range of applicability for different catalyst temperatures (up to 800 °C) and space velocities than a conventional NOx storage and reduction system. Various types of mechanism analysis suggest that active intermediate species such as isocyanates (R-NCO) generated from adsorbed NOx and partial oxidized HCs by fast injection pulse would play a role in high deNOx performances. The application of the new concept into vehicles will also be considered, in comparison with standard NSR techniques.