... molecule polarization,the attachment force is strong for water ,oxide,acetic acid,alkali ect.Activated alumina defluorinates just as the ... It can widely used in the deep drying of cracked gas,ethylene and propylene, hydrogen-generation,air separation,instrument air drying and ... such as H2S,SO2,HF and paraffin in the waste gas, especially in the drinking water defluorination.APPICATION1) Catalyst for ...