Characteristics of Oxidation of Diesel Paticulate Matter over a Spinel Type Cu 0.95 K 0.05 Fe 2 O 4  Catalyst | Zendy

Lin H. | Zendy; Huang Z. | Zendy; Shangguan W. | Zendy

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Characteristics of Oxidation of Diesel Paticulate Matter over a Spinel Type Cu 0.95 K 0.05 Fe 2 O 4 Catalyst

Author(s) -

Lin H.,

Huang Z.,

Shangguan W.

Publication year - 2008

Publication title -

chemical engineering and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.403

H-Index - 81

eISSN - 1521-4125

pISSN - 0930-7516

DOI - 10.1002/ceat.200800028

Subject(s) - soot , spinel , catalysis , diesel exhaust , catalytic oxidation , redox , oxide , chemistry , metal , inorganic chemistry , diesel fuel , materials science , analytical chemistry (journal) , metallurgy , environmental chemistry , combustion , organic chemistry

This paper presents an experimental study on oxidation of diesel paticulate matter (PM) and aims at investigating the characteristics of PM oxidation. The experiments were performed over a Cu 0.95 K 0.05 Fe 2 O 4 catalyst which is attributed to a spinel type metal oxide. The effects of O 2 on PM oxidation as well as on NO x reduction were studied and the roles of O 2 in PM oxidation and in NO x reduction, respectively, are discussed. During the temperature‐programmed oxidation of PM, SOF oxidation and soot oxidation lead to two CO 2 peaks at different temperatures. It was found that the presence of O 2 benefits PM oxidation but suppresses the reduction of NO x into N 2 by consuming the soot. This study revealed that the appearance of PM oxidation is different from that of soot oxidation. The mechanisms on PM oxidation and NO x reduction are discussed.

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