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首页> 外文期刊>Journal of Mechanical Science and Technology >Overview of the Effect of Catalyst Formulation and Exhaust Gas Compositions on Soot Oxidation in DPF
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Overview of the Effect of Catalyst Formulation and Exhaust Gas Compositions on Soot Oxidation in DPF

机译：催化剂配方和废气成分对DPF中碳烟氧化的影响概述

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This work reviews the effects of catalyst formulation and exhaust gas composition on soot oxidation in CDPF (Catalytic Diesel Particulate Filter). DOC's (Diesel Oxidation Catalysts) have been loaded with Pt catalyst (Pt/Al{sub}2O{sub}3) for reduction of HC and CO. Recent CDPF's are coated with the Pt catalyst as well as additives like Mo, V, Ce, Co, Fe, La, Au, or Zr for the promotion of soot oxidation. Alkali (K, Na, Cs, Li) doping of metal catalyst tends to increase the activity of the catalysts in soot combustion. Effects of coexistence components are very important in the catalytic reaction of the soot, The soot oxidation rate of a few catalysts are improved by water vapor and NO{sub}x in the ambient, There are only a few reports available on the mechanism of the PM (particulate matter) oxidation on the catalysts. The mechanism of PM oxidation in the catalytic systems that meet new emission regulations of diesel engines has yet to be investigated. Future research will focus on catalysts that can not only oxidize PM at low temperature, but also reduce NO{sub}x, continuously self-cleaning diesel particulate filters, and selective catalysts for NO{sub}x reduction.
机译：这项工作回顾了催化剂配方和废气成分对CDPF（催化柴油颗粒过滤器）中烟灰氧化的影响。 DOC（柴油氧化催化剂）已加载了Pt催化剂（Pt / Al {sub} 2O {sub} 3）以减少HC和CO。最近的CDPF's都涂覆了Pt催化剂以及Mo，V，Ce等添加剂，Co，Fe，La，Au或Zr用于促进烟灰氧化。金属催化剂的碱（K，Na，Cs，Li）掺杂往往会增加烟so燃烧中催化剂的活性。共存组分的影响在烟灰的催化反应中非常重要。几种催化剂的烟灰氧化速率通过环境中的水蒸气和NO {sub} x得以改善，关于这种机理的报道很少。催化剂上的PM（颗粒物）氧化。满足柴油机新排放法规的催化系统中PM氧化的机理尚待研究。未来的研究将集中在不仅能在低温下氧化PM还能还原NO {sub} x的催化剂，连续自清洁柴油机颗粒过滤器以及用于还原NO {sub} x的选择性催化剂上。

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