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- Title
Potassium-Activated Wire Mesh: A Stable Monolithic Catalyst for Diesel Soot Combustion.
- Authors
Qi, Guolu; Zhang, Yexin; Chen, Aibing; Yu, Yifeng
- Abstract
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.
- Subjects
DIESEL particulate filters; POTASSIUM; SOOT -- Environmental aspects; WIRE netting; X-ray fluorescence
- Publication
Chemical Engineering & Technology, 2017, Vol 40, Issue 1, p50
- ISSN
0930-7516
- Publication type
Article
- DOI
10.1002/ceat.201600137