MESOPOROUS BODY HAVING HOLLANDITE TYPE CRYSTAL STRUCTURE AND ITS PRODUCTION

摘要

PROBLEM TO BE SOLVED: To obtain a mesoporous body of a hollandite type compd. having a large specific surface area and excellent in monodispersity of pore diameter distribution. ;SOLUTION: The mesoporous body has a chemical compsn. represented by the chemical formula A_xM_yN₈-_yO₁₆ (where A is an alkali metallic or alkaline earth metallic element, M is a di- or trivalent metallic element, N is a tetravalent metallic element, 0.8x ≤2 and 0.8y ≤2), a hollandite type crystal structure, ≥10m²/g BET specific surface area calculated from the adsorption- desorption isotherm of nitrogen and a pore diameter distribution curve excellent in monodispersity and having about 2 nm half-width of a peak in the pore diameter range of 3-30 nm and about ≥20 mm³.g peak height of pore area by the Dollimore-Heal method analysis method.;COPYRIGHT: (C)1999,JPO