Net-zero carbon fuels will play a critical role in decarbonization of on-road vehicles as well as the hard-to-electrify rail, marine and off-road engines in the transportation sector. Net zero carbon fuels running on engines must meet the stringent emissions regulations for commercial use of these fuels. Prior work has shown that net zero carbon fuels can introduce interesting emissions control challenges and opportunities. The reactivity of a fuel on a catalyst can be sensitive to its chemical structure and to the exhaust composition (stoichiometric vs. lean).<br/>The current effort involves measuring the impact of net zero carbon fuels on commercial emissions control catalyst reactivity under engine-exhaust relevant conditions. A synthetic exhaust flow-reactor has been used to measure the light-off and light-down temperatures of a wide range of fuels as per protocols set by industry. The influence of functional groups of the fuels such as alkanes, alkenes, alcohols, ketones, esters, and non-oxygenated aromatic hydrocarbons, on the catalyst light-off/light-down temperature has been investigated. The impact of these net zero carbon fuels on other regulated pollutants such as CO and NOx has also been studied.

Impact of net-zero carbon fuels on the reactivity of emissions control catalysts for green-house gas reduction

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