Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 70, Issue 1-4, Pages 45-52Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2005.10.032
Keywords
NOx; selective catalytic reduction; n-decane; iron; zeolite; deactivation
Ask authors/readers for more resources
The selective catalytic reduction (SCR) of NO by n-decane was investigated on a Fe-ZSM-5 prepared by the FeCl3 sublimation method. NO conversion profiles versus temperature were followed in both temperature programmed surface reaction (TPSR, 10 degrees C min(-1)) and steady state experiments. A higher NO conversion with a maximum of ca. 80% at 400 degrees C is observed in the course of the TPSR tests. This phenomenon has been attributed to strong adsorption of n-decane which protects the active sites against the poisoning. Indeed, in steady state experiments at 390 degrees C the strong decrease of activity as a function of time on stream is due to the polymerisation of conjugated nitriles. This study indicates that long chain alkanes are not the most adequate reductants of NO for high temperature SCR applications. Moreover, due to an easier polymerization of conjugated nitriles on iron zeolites (stronger Fe Lewis sites), this type of catalyst seems less attractive than Cu-zeolite catalysts for the SCR of NO by hydrocarbons in this respect. (c) 2006 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available