13X Molecular Sieve is an alkali metal aluminosilicate. The 13X molecular sieve in the form of sodium salt has an effective pore size of 10 angstroms and can adsorb molecules no larger than 10 angstroms. It can be used for catalyst carrier, co-adsorption of water and carbon dioxide, co-adsorption of water and hydrogen sulfide gas, and is mainly used in the drying of medicine and air compression systems.