Sodium zirconate (Na2ZrO3) was synthesized by a solid-state reaction and then it was tested in the methane reforming process. Na2ZrO3 was initially carbonated at different temperatures (550-700 degrees C). Then, each carbonated Na2ZrO3 sample (composed by Na2CO3 and ZrO2) was used as a catalyst and as a carbon dioxide supplier for syngas (H-2 + CO) production through the methane reforming reaction. Results clearly show the formation of H-2 and CO, evidencing a catalytic conversion. Moreover, cyclic and structural analyses corroborated that Na2ZrO3 could be used cyclically in the carbonation and subsequent methane reforming processes, although the crystalline structure was not totally recovered.