“…Inorganic materials used for mixedâmatrix membranes are classified into porous and nonporous types . Silica , , palladium , TiO 2 , SnO 2 , and fullerene are some examples of nonporous particles, while zeolites , , carbon molecular sieves , carbon nanotubes , metalâorganic frameworks , , and mesoporous silica are examples of porous materials.…”