Method for preparing modified mesoporous alumina adsorbent for desulfurization and denitration

The invention discloses a method for preparing a modified mesoporous alumina adsorbent for desulfurization and denitration; mesoporous alumina is used as a carrier, and is loaded with alkali metal ions of K and Cu ions respectively as active components for modification, ultrasonic equal-quantity impregnation is adopted, and the modified mesoporous alumina adsorbent is prepared; the method is simple, and is easy to operate and low in cost; and the adsorbent prepared by the method has good adsorption effect.