The ketone-based gas adsorbent according to the present invention is characterized by containing a primary amine compound. The primary amine compound is preferably at least one selected from the group consisting of hydrazide compounds, aminoguanidine compounds, and polyamines.本發明之酮系氣體吸附劑之特徵為包含一級胺化合物。一級胺化合物較佳為選自醯肼化合物、胺基胍化合物及多胺所組成群組之至少1種。
