Layered double hydroxide-based low-temperature NOx adsorbent and manufacturing method thereof

摘要

The present invention discloses a layered double hydroxide-based low-temperature nitrogen oxide adsorbent and a method for preparing the same. According to the present invention, the steps of mixing a metal divalent ion precursor, a metal trivalent ion precursor and an alkali metal precursor, hydrothermal reaction of the mixed solution at a preset temperature for a preset time, and centrifugation of the mixed solution after completion of the reaction A method for preparing a layered double hydroxide-based nitrogen oxide adsorbent comprising the steps of drying the residue left behind after obtaining a powdery layered double hydroxide and calcining the layered double hydroxide to prepare a mixed metal oxide having an alkali metal introduced therein is provided