Laser Raman Spectroscopic Investigation on the Conversion of Molten Urea into NH3 for the Selective Catalytic Reduction of NO x in Oxygen-Rich Exhaust Gases

The selective catalytic reduction (SCR) is widely used for the NOx removal from the oxygen-rich exhaust gases of diesel passenger cars and trucks. SCR implies the reduction of NOx by NH3 originated from AdBlue, which is an aqueous solution of urea (32.5 wt.%) stored on-board of the vehicles. However...

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