Advanced Substrate for Diesel Particulate Removal

柴油发动机产生的烟尘颗粒现在被认为是致癌物质，是造成城市空气污染的主要因素。现代汽车和卡车都配备了柴油微粒过滤器（DPF）系统，该系统由多孔蜂窝结构组成，可以捕获烟灰颗粒，然后在有足够热量的情况下使用废气将其氧化。本项目旨在证明一种能够动态捕获和消除烟灰颗粒的新型过滤装置的可行性。该装置使用夹在多孔陶瓷板之间的纤维基板。通过暴露在高电流密度下去除被捕获的颗粒。该项目旨在开发先进版本的纤维基板，其中吸附纳米级氧化催化剂的负载有助于在较低温度下去除煤烟。这种先进的基材将使人们能够开发出具有吸引力的传统dpf的新替代品，这可能在为印度等城市空气质量问题严重的发展中国家提供有效、轻便、经济、可靠和负担得起的减排技术方面取得重大进展。

Soot particles from diesel engines are now recognised as carcinogenic and are a major contributor to urban airpollution. Modern cars and trucks are fitted with Diesel Particulate Filter (DPF) systems which are composed ofporous honeycomb structures which trap soot particles and then oxidise them using the exhaust gases whenthere is sufficient heat. This project aims to prove the feasibility of a novel filtering device capable ofdynamically trapping and eliminating soot particles. The device uses a fibrous substrate sandwiched betweenhighly porous ceramic plates. Trapped particles are removed by exposure to high electric current densities. Theproject intends to develop advanced versions of a fibrous substrate where loadings of adsorbed nanoscaleoxidation catalyst facilitate soot removal at lower temperatures. Such advanced substrates will enable thedevelopment of attractive novel alternatives to conventional DPFs which can potentially make major in-roads inproviding effective, lightweight, cost-effective, robust and affordable emissions abatement technology fordeveloping countries with severe urban air quality problems like India.