Mesoporous material
（重定向自Mesoporosity）
![Electron microscopy images of nitrogen-containing ordered mesoporous carbon (N-OMC) taken (a) along and (b) perpendicular to the channel direction.[1]](/Images/godic/202501/27/Mesoporous_carbon_TEM3714.jpg")
A mesoporous material is a material containing pores with diameters between 2 and 50 nm.
Porous materials are classified into several kinds by their size. According to IUPAC notation, microporous materials have pore diameters of less than 2 nm and macroporous materials have pore diameters of greater than 50 nm; the mesoporous category thus lies in the middle.