(521cz) Reactivity of Potential Net-Zero Carbon Fuels on Emissions Control Catalysts

Net zero carbon fuels will play a critical role in decarbonization of the hard-to-electrify transportation sectors. Emissions control catalyst efficiency has been reported to be sensitive to the fuel composition. Net-zero carbon fueled engines must meet the stringent emissions regulations. Therefore, it is important to evaluate the reactivity of potential net-zero carbon fuels on a commercial emissions control catalyst to ensure emissions compliance.

The impact of net-zero carbon fuels under full synthetic exhaust conditions on an aged commercial diesel oxidation catalyst was evaluated. A synthetic exhaust flow-reactor was used to measure the light-off temperatures of a wide range of fuels as per protocol set by industry. The influence of functional groups of the fuels such as alcohols and their partial combustion products (aldehydes), polyoxymethylene ethers, esters, alkanes and aromatics on the catalyst light-off temperature was investigated. The effect of these net-zero carbon fuels on other criterial pollutants such as CO and NOx were also studied.