PROBLEM TO BE SOLVED: To provide a heat-resistant adsorbent having high removal performance of lower aliphatic aldehyde, and having little time degradation of the removal performance of lower aliphatic aldehyde caused by oxidation.SOLUTION: There is provided an aldehyde adsorbent in which an amine compound and an antioxidant whose solubility into water at 20°C is 0.8 g/l or higher are loaded on active carbon whose BET specific surface area is 700-2,000 m/g, and a loading amount of the amine compound is 1-30 wt% to the weight of the active carbon, and a loading amount of the antioxidant is 0.5-5 times to the mol number of an amino group in amine compound one molecule.【課題】低級脂肪族アルデヒドの除去性能が高く、酸化による低級脂肪族アルデヒドの除去性能の経時劣化が小さい耐熱性のある吸着材を提供すること。【解決手段】ＢＥＴ比表面積が７００～２０００ｍ2／ｇの活性炭にアミン化合物および水への溶解度が２０℃で０．８ｇ／ｌ以上である酸化防止剤が添着されており、アミン化合物の添着量が活性炭重量に対して１～３０重量％、酸化防止剤の添着量がアミン化合物１分子のアミノ基のモル数に対して０．５～５倍であることを特徴とするアルデヒド吸着材。【選択図】なし
