Nitrous oxides gas adsorbing substance and preparation method thereof

Abstract

The invention relates to a gas adsorbent of nitrogen oxides and a preparing method thereof in the technical field of air pollution. The gas adsorbent of the nitrogen oxides comprises active carbon, alkaline substances and metallic oxides. The preparing method comprises surface active modification, solution impregnation and metal load which are combined for preparing the gas adsorbent of the nitrogen oxides. The obtained adsorbent has high adsorption rate, large adsorption capacity and long penetration time to the nitrogen oxides, the preparation cost is lower than that of the prior art, and the preparation process is simple.

Description

technical field

[0001] The invention relates to an adsorbent in the technical field of chemical industry and a preparation method thereof, in particular to a nitrogen oxide gas adsorbent and a preparation method thereof. Background technique

[0002] Among various air pollutants, NO X pollution and the harm it causes cannot be ignored. Most of NOx comes from fuel combustion, that is, vehicle exhaust, industrial kiln emissions, etc. The main component of NOx is NO, which is slowly oxidized in the atmosphere into brown-red NO with a pungent odor 2 . NOx is the main pollutant that forms acid rain and acid mist, and can form photochemical smog with hydrocarbons, and also participates in the destruction of the ozone layer. Nitrogen oxides are harmful to the human body and mainly invade the bronchioles and alveoli in the deep part of the respiratory tract, which can strongly stimulate and corrode lung tissue and cause pulmonary edema. High concentrations of nitric oxide can a...