Using　sodium　carbonate　as　catalyst,　carbon　dioxide　gasification　kinetics　for　four　kinds　of　low　activity　anthracites　(Vad=2.69%-4.35%)　was　investigated　with　isothermal　thermo-gravimetric　analysis　under　ambient　pressure.　The　reaction　control　conditions,　eliminating　both　inner　and　outer　diffusion　effects,　were　examined.　The　relationships　of　coal　conversion　versus　reaction　time　for　these　low　activity　anthracites　were　measured　from　750°C　to　950°C.　The　shrinkingcore　model　(SCM),　homogeneous　model　(HM)　and　modification　volumetric　model　(MVM)　were　used　to　correlate　the　relationships　between　conversion　and　time　and　to　obtain　the　reaction　rate　constants　at　different　temperatures.　Then　the　reaction　activation　energy　and　the　pre-exponential　factor　of　four　anthracites　were　predicted　respectively　by　using　the　Arrhenius　equation.　According　to　the　order　of　reaction　rate　constant　determined　by　the　above　three　models　(SCM,　HM,　MVM),　the　activity　order　of　the　four　anthracites　was　Shangjing　coal＞Yong＇an　Jiashai　coal＞Yong＇an　Fengshai　coal＞Yongding　coal.　The　activation　energy,　ranging　from　122.27-214.72　kJ·mol-1　estimated　by　this　study,　agreed　well　with　the　literature　reported　for　the　case　of　potassium　chloride　catalytic　gasification　by　carbon　dioxide　for　higher　activity　coals.