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, 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 producing a layered double hydroxide-based nitrogen oxide adsorbent comprising the step of drying the remaining residue to obtain a layered double hydroxide in the form of a powder, and preparing a mixed metal oxide into which an alkali metal is introduced by sintering the layered double hydroxide. Is provided.