Abstract
Catalytic oxidation and sensing of simulated diesel particulate matter (PM), which consists of hexadecane and carbon black as substitutes of soluble organic fraction (SOF) and soot, respectively, were investigated with Ag and Pt catalysts supported on TiO 2 and CeO 2. Supported Ag catalysts were active for soot oxidation at temperatures over about 500 °C, while supported Pt catalysts were almost inactive for the soot oxidation. Toward the oxidation of SOF, on the other hand, supported Pt catalysts were more active than supported Ag catalysts. Catalytic combustion-type sensors coated with those catalysts was fabricated, and their sensing characteristics were evaluated. Because of the difficulty to simulate the real sensing condition of PM, employed in this study was the programmed heating of the sensor on which PM or soot was pre-loaded. The results strongly suggest the possibilities to construct the catalytic combustion-type PM sensor and to selectively detect SOF and soot by the proper selection of the catalytic materials and operation temperatures.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
