Using Surface Chemistry to Probe the Mechanisms of Emissions Aftertreatment Catalysis

Lead Research Organisation: Cardiff University
Department Name: Chemistry

Abstract

Internal combustion engines produce gaseous emissions and soot which need to be treated by an aftertreatment system. Catalysts are a key part of these systems and optimising their performance is critical to achieve stringent tailpipe targets across the world. Also, the ability to build accurate aftertreatment models reduces reliance on physical testing of systems when they are at an immature stage of development.
In order to improve both attributes, the fundamentals of how a catalyst works (i.e. its mechanism) need to be understood. To achieve this, this project will develop, then use, in-situ methods to perform mechanistic monitoring of catalysts in relevant situations (e.g. three way catalyst oxygen storage behaviour) using the cutting edge equipment available to Cardiff University.

Publications

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Studentship Projects

Project Reference Relationship Related To Start End Student Name
EP/R512503/1 01/10/2017 30/09/2021
1937664 Studentship EP/R512503/1 01/10/2017 31/12/2021 Liam Alexander Bailey
 
Description Automotive catalysts are typically made via impregnation techniques like wet impregnation or incipient wetness. These techniques require solvent and use of chloride/nitrate based metal precursors that can damage the catalyst and lead it to not work as effectively. We have found that a technique call chemical vapour impregnation (CVI) produces very active catalysts without the need for a solvent or damaging precursor.
Exploitation Route CVI is an underused technique in catalyst synthesis. With the desire to fulfill the green principles of chemistry and produce less waste, we believe this method can be more widely used to help obtain this.
Sectors Construction,Energy,Environment,Manufacturing, including Industrial Biotechology,Transport,Other