Journal
CATALYSIS TODAY
Volume 119, Issue 1-4, Pages 257-261Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2006.08.029
Keywords
diesel particulate; catalytic combustion; LiCoO2; catalytic wall-flow trap
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This paper concerns the development of a LiCoO2 catalyst which shows appreciable activity towards the catalytic combustion of soot already at 300 degrees C. An in situ combustion synthesis method was then tailored to the preparation of a LiCoO2-catalysed trap based on a silicon carbide wall-flow monolith. Engine bench tests on this catalytic trap (trap loading with soot and then its regeneration induced by a temperature rise entailed by catalytic combustion of post-injected fuel) showed that the presence of the catalyst in the wall-flow trap enables both a more complete regeneration (78% opposed to just 52% of the non-catalytic trap) and a reduction of the regeneration time, with consequent saving of post-injected fuel. (c) 2006 Elsevier B.V. All rights reserved.
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