日本ゼオライト学会　刊行物 Publication of Japan Zeolite Association

The present article describes the first "Organo-zeolites" with three-dimensional oxide skeletons, AlMepO-α and -β.

AlMepO-β crystallized on a hydrothermal reaction form an aqueous mixture of pseudoboehmite and methylphosphonic acid without additives and with neutral and acidic ones. Basic additives always gave AlMepO-ζ with layered structure. Static mixing and standing of the starting materials or use of glycolic solvent instead of water caused to form AlMepO-α. Also formation mechanism of the microporous structures was discussed.

Single crystal X-ray structural analysis of AlMepO-α and -β revealed that both compounds have triangular unidimensional channels lined with methyl groups, of which cross sections are triangular. The difference of the framework between both the compounds are explained. Adsorption of neopentane into the channels of both compounds confirmed that the diameter of the channel is larger than 6.2 Å. Nitrogen and water vapor isotherms of both compounds have different features. Their causes ware able to related to their different channel shape.