title: Tetrahedral connection of ε-Keggin-type polyoxometalates to form an all-inorganic octahedral molecular sieve with an intrinsic 3D pore system.
abstract: A new type of polyoxometalate-based porous material was successfully synthesized. The new material is the first fully inorganic Keggin-type polyoxometalate-based microporous material with intrinsically ordered open micropores and is the third member of the small family of octahedral molecular sieves (OMSs). Twelve MoO6 or VO6 octahedra surround a central VO4 tetrahedron to form ε-Keggin polyoxometalate building blocks (ε-VMo9.4V2.6O40) that are linked by Bi(III) ions to form crystalline Mo-V-Bi oxide with a diamondoid topology. The presence of a tetrahedral shape of the ε-Keggin polyoxometalate building block results in arrangement of microporosity in a tetrahedral fashion which is new in OMSs. Owing to its microporosity, this Mo-V-Bi oxide shows zeolitic-like properties such as ion-exchange and molecule adsorption.
authors.affiliation: Catalysis Research Center, Hokkaido University , N-21, W-10, Kita-ku, Sapporo 001-0021, Japan.
authors.forename: Zhenxin
authors.initials: Z
authors.lastname: Zhang
authors.forename: Masahiro
authors.initials: M
authors.lastname: Sadakane
authors.forename: Toru
authors.initials: T
authors.lastname: Murayama
authors.forename: Shoko
authors.initials: S
authors.lastname: Izumi
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Yasuda
authors.forename: Norihito
authors.initials: N
authors.lastname: Sakaguchi
authors.forename: Wataru
authors.initials: W
authors.lastname: Ueda