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Synergistic catalysis effect of Mn-promoted BaAl2O4 catalysts on catalytic performance for soot combustion

Paper ID Volume ID Publish Year Pages File Format Full-Text
49381 46740 2015 5 PDF Available
Title
Synergistic catalysis effect of Mn-promoted BaAl2O4 catalysts on catalytic performance for soot combustion
Abstract

•Catalysts containing Mn exhibited high surface area and good redox property.•The Mn addition promoted drastically the catalytic performance for soot combustion.•An optimized catalyst must accommodate barium and manganese with proper balance.•The enhanced catalytic activity related with synergistic effect between Mn and Ba.

ABSTRACTA series of Mn-promoted BaAl2O4 catalysts were developed for catalytic soot combustion. These catalysts were characterized using XRD, BET, H2-TPR, O2-TPD, and in-situ DRIFTS. The results showed that an optimized combustion catalyst should accommodate barium and manganese with proper balance to promote soot combustion. A synergistic mechanism was suggested to explain the synergistic effect of manganese and barium: NO was trapped mainly as nitrites by barium, while the generated nitrites further transformed to nitrates facilitated by manganese, which finally oxidized soot into CO2.

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Keywords
Soot combustion; Synergistic catalysis; NO; In-situ DRIFTS; Nitrates
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 69, 5 September 2015, Pages 202–206
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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Any Questions? feel free to contact us