FIELD: gas industry. SUBSTANCE: gas containing carbon dioxide comes in contact with product of kaolin modification by ferric oxide monohydrate (III) in modification γ = FeO(OH) or δ = FeO(OH) at its content in product within 50 to 60 mass percent, having a density 3,8-5,0 g/cm3. EFFECT: facilitated procedure. 1 tbl
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