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Investigations on the decomposition of AdBlue urea in the liquid phase at low temperatures by an electrochemically induced pH shift

Braun, Peter ; Durner, Bernhard ; Rabl, Hans-Peter ; Matysik, Frank-Michael


Ammonia-based selective catalytic reduction (SCR) systems are the most widely used technology for reduction of nitrogen oxide emissions from lean-burn engines such as diesel engines. However, at low exhaust temperatures, the SCR process is limited by difficulties in the decomposition of the ammonia precursor urea, which is carried on-board using an aqueous solution "AdBlue". In this study, the ...


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