... 8% 4.Active:56-62% Activated Alumina used in air condition Activated alumina has much micro-paths, so the specific ... molecular absorbent, according to the absorbed molecular polarization, the attachment force is strong for water, oxide, acetic acid, alkali etc ... of cracked gas, ethylene and propylene, hydrogen-generation, air separation, instrument air drying and fluorine treatment for H2O2, also in the ...