Fast Cycling NOx Storage and Reduction: Identification of an Adsorbed Intermediate Pathway.

Autor:	Ting, Allen Wei-Lun, Harold, Michael P., Balakotaiah, Vemuri
Předmět:	CYCLING LOCOMOTION STORAGE EMISSION control INTERMEDIATE bosons
Zdroj:	Catalysis Letters; Jul2018, Vol. 148 Issue 7, p1951-1964, 14p
Abstrakt:	Abstract: An experimental study describes fast cycling NOx storage and reduction on a Pt/Rh/BaO/CeO2/Al2O3 monolith catalyst for emission control of lean burn vehicles. Comparison of the temporal dependence of the effluent composition when using H2 and C3H6 as reductants enables an assessment of the mechanism. Involvement of a surface N-containing oxygenate pathway is indicated by the appearance of peaks of N2O, N2, and CO2 during the rich to lean switch. Adsorbed intermediate reactivity measurements provide further evidence.Graphical Abstract: m/e = 28 signal indicating thermal decomposition and oxidation of HC-intermediates under lean/rich/blank cycle of different durations. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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