Composite material, nitrogen oxide adsorbent, method for adsorbing nitrogen oxide, and apparatus for removing nitrogen oxide

摘要

Problem to be solved: to provide a composite material having high nitrogen oxide adsorption performance in a gas atmosphere containing low temperature and water.A composite material comprising noble metals and zeolites, wherein zeolite contains LTA in the framework and SiO2 / Al2O3 molar ratio is 11 or more, the maximum ring size of the zeolite is It is preferred that the zeolite is a Rho type zeolite.Diagram