The feasibility of using high-efficiency structured packing in CO2 separation processes with a newly proposed solvent, 2-amino-2-methyl-1-propanol (AMP), was investigated. The packing performance was evaluated in tens of overal mass transfer coefficients of CO2 absorption into aqueous sodium hydroxide and AMP solutions over ranges of main operating variables, i.e. up to 10 kPa partial pressure of CO2, 0.29-0.61 m(3) m(-2) s(-1) gas rate, 4.87-14.18 m(3) m(-2) h(-1) liquid rate, and 1.1-2.0 kmol m(-3) liquid concentration. The experimental results showed that the structured packing provides 10 to 33 times higher overall mass transfer coefficients than commenly used random packings. (C) 1997 Elsevier Science B.V.