... -5mm Pellets 1.6mm 3.2mm 4) Air separation, LPG,Molecular Sieve 13XIntroductionMolecular Sieve 13X is the sodium form of ... SiO2 . (6~7)H2O SiO2 : Al2O3 ≈2.6-3.0 Technical ParameterItemUnitTechnical dataShape PelletSphereDiametermm1.5-1.73.0-3.31.7 ... . Removal of mercaptans and hydrpogen sulphide from hydrocarbon liquid streams (LPG, butane, propane etc.) Catalyst protection, removal of oxygenates from ...