Die Chance auf einen NOx-freien Verbrennungsmotor

The removal of nitric oxides from the flue gas of internal combustion engines is attempted today by an aqueous solution of urea, where 2/3 of the mass is water. The concentration corresponds to the eutectic mixture, but nevertheless the freezing point is -11 degrees C, making a permanent heating of the reservoir necessary. Additionally, there is a small range of operation temperatures, thus, a nitric oxides removal just after the start of the motor is not possible. This article describes a technically superior solution of nitric oxides removal by liquid organic hydrogen carrier (LOHC). It is expected that, additionally, LOHC will play a role in the CO2-free traffic.