Comparison of Gaseous Molecular Adsorption Properties of Microporous Manganese Oxides and Crystalline Aluminosilicates.
The N(2), H(2)O, and NH(3) adsorption properties on hollandite-type (H-Hol) and birnessite-type (H-Bir) hydrous manganese oxides were compared with those on zeolitic crystals. It was found that the effective pore openings of H-Bir and H-Hol are below 0.3 nm. Although the geometric spaces on H-Bir and H-Hol available for physical adsorption from a gaseous phase are much smaller than those on zeolites, they can provide a strong chemisorption field for H(2)O and NH(3) intercalation. Copyright 2001 Academic Press.
Separation Technology Division, Department of Marine Resources, Shikoku National Industrial Research Institute, Hayashi-cho 2217-14, Takamatsu-shi, Kagawa, 761-0395, Japan
Z.-M.
ZM
Wang
H.
H
Kanoh