Study on PM Oxidation over Ash-deposited Catalyzed Diesel Particulate Filters
アッシュ堆積時における触媒付ディーゼル微粒子捕集フィルター上の PM 酸化挙動解析
The PM oxidation behavior over ash-deposited catalyzed diesel particulate filters (CDPFs) was studied by using small-scale evaluation and visualization techniques. Before ash deposition, a CDPF with CeO₂–Ag (CA) catalyst reduced the temperature required for PM oxidation by about 100 °C compared to a CDPF with Pt/Alx₂O₃ catalyst or to a DPF alone. The catalytic performance of the CDPF with CA was decreased by ash deposition, however, it was observed until ash deposition reached 40g/L by weight or 100 μm by thickness. ESR analysis suggested that this remote PM oxidation could be due to migration of superoxide species generated on the CA catalyst.アッシュ堆積時の触媒付DPF上のPM酸化挙動を活性試験と可視化試験により解析した.アッシュ堆積がない場合,銀-セリア触媒付DPFは,白金/アルミナ触媒付DPFより約100℃低温でPMを酸化した.アッシュが堆積すると,後者はすぐに活性消失したが,前者はアッシュ堆積量40g/L,堆積厚さ100μm程度まで活性を発現した.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/02878321
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Authors:
- Yamazaki, Kiyoshi
- Sakakibara, Yuji
- Daido, Shigeki
- Okawara, Seiji
- Publication Date: 2015
Language
- English
- Japanese
Media Info
- Media Type: Web
- Features: Figures; References;
- Pagination: pp 65-70
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Serial:
- Transactions of Society of Automotive Engineers of Japan
- Volume: 46
- Issue Number: 1
- Publisher: Society of Automotive Engineers of Japan
- ISSN: 0287-8321
- EISSN: 1883-0811
- Serial URL: https://www.jstage.jst.go.jp/browse/jsaeronbun
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Publication flags:
Open Access (libre)
Subject/Index Terms
- TRT Terms: Ash content; Catalysts; Evaluation; Filters; Heat engines; Oxidation; Particulates
- Subject Areas: Highways; Vehicles and Equipment;
Filing Info
- Accession Number: 01665018
- Record Type: Publication
- Source Agency: Japan Science and Technology Agency (JST)
- Files: TRIS, JSTAGE
- Created Date: Mar 30 2018 4:32PM