The　success　of　CO2　capture　from　flue　gas　with　solid　sorbent　is　dependent　of　a　low　cost　sorbent　with　high　CO2　adsorption　capacity　and　selectivity.　Modifying　surface　texture　of　activated　carbon　with　impregnating　amines　is　expected　to　offer　the　benefits　of　liquid　amines　in　the　typical　adsorption　process　routes.　In　this　work,　cocoanut　activate　carbon　(AC)　is　firstly　alkalified　by　KOH　solution,　then　modified　by　impregnation　of　tetraethylenepentamine　(TEPA),　triethylenetetramine　(TATA),　and　triethanolamine　(TEA)　to　form　a　new　type　of　sorbents.　The　effects　of　alkalifying　treatment　and　temperature　on　CO2　adsorption　capacities　of　the　sorbents　are　investigated.　Results　indicate　that　the　activate　carbons　modified　by　combining　alkalification　pretreatment　firstly　and　then　impregnated　amines　at　low　temperature　are　profitable　for　CO2　adsorption.　The　adsorption　capacities　of　CO2　are　enhanced　with　TEPA　and　TETA　impregnation　on　the　activate　carbon　pretreated　by　KOH　solution.　And　CO2　adsorption　capacity　of　new　sorbents　is　stable　after　many　adsorption　and　desorption　cycles.　©　(2013)　Trans　Tech　Publications,　Switzerland.