Journal
CHEMICAL ENGINEERING & TECHNOLOGY
Volume 40, Issue 1, Pages 50-55Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.201600137
Keywords
Catalytic diesel particulate filter; Potassium; Soot combustion; Wire mesh
Categories
Funding
- National Natural Science Foundation of China [51422212, 21307142]
- Science Technology Department of Zhejiang Province [2015C31118]
- Ningbo Science and Technology Bureau [2015A610248, 2015B11003, 2014A610108, 2014D10004]
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Potassium-modified FeCrAl alloy wire mesh was developed as a catalytic diesel particulate filter to suppress the emission of soot from a diesel engine. Potassium species were deposited on wire mesh by a chemical vapor deposition method, in which a model soot was used to convert KOH into metallic K at high temperatures to subsequently activate the wire mesh. Tests showed that metallic K reacted with the enriched Al2O3 component on the surface derived from segregation and successive oxidation during precalcination. The resulting layer of K-O-Al species offers remarkable activity and stability for the catalytic oxidation of diesel soot. The K-activated wire mesh could lower the initial temperature of soot combustion and maintain the activity for several cycles.
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