adsorb gas and liquid such as water ,natural gas; the high water adsorption properties; ... is 4A,it adsorbs water, methanol, ethanol, hydrogen sulfide, sulfur dioxide, carbon dioxide, ethylene, propylene, and does not adsorb any molecular larger than ... drying of air, natural gas, paraffin gas ,liquid cooling agent and so on, and liquid. * Preparation and purification of argon gas. * The ...