Soot trapping and combustion on nanofibrous perovskite LaMnO sub(3) catalysts under a continuous flow of soot

Catalytic activity for soot combustion and efficiency of soot trapping of fibrous perovskite-oxide LaMnO sub(3) and powder perovskite-oxide LaMnO sub(3) were investigated. We have developed a new apparatus to produce a drizzly mixture of soot/O sub(2)/N sub(2) to imitate actual exhaust gas from dies...

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Published in:Applied catalysis. B, Environmental Environmental, 2010-01, Vol.93 (3-4), p.383-386
Main Authors: Li, Shanxia, Kato, Reina, Wang, Qi, Yamanaka, Toshiro, Takeguchi, Tatsuya, Ueda, Wataru
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container_title Applied catalysis. B, Environmental
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creator Li, Shanxia
Kato, Reina
Wang, Qi
Yamanaka, Toshiro
Takeguchi, Tatsuya
Ueda, Wataru
description Catalytic activity for soot combustion and efficiency of soot trapping of fibrous perovskite-oxide LaMnO sub(3) and powder perovskite-oxide LaMnO sub(3) were investigated. We have developed a new apparatus to produce a drizzly mixture of soot/O sub(2)/N sub(2) to imitate actual exhaust gas from diesel engines. By using this apparatus, it is possible to feed the mixture of soot, O sub(2) and N sub(2) continuously on catalysts at constant rates. It was found that the activities for soot combustion of powder and fibrous LaMnO sub(3) were similar but that the efficiency for trapping soot by fibrous oxide was higher than that for trapping soot by powder oxide. Our method demonstrates a new possibility for the study of soot reduction under conditions close to those of an actual catalyst and filter placed after a diesel engine.
doi_str_mv 10.1016/j.apcatb.2009.10.012
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title Soot trapping and combustion on nanofibrous perovskite LaMnO sub(3) catalysts under a continuous flow of soot
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