Functional structural body and method for making functional structural body

A structural body, comprising:

• a skeletal body of a porous structure composed of a zeolite-type compound;
• and
• at least one metal oxide nanoparticle containing a perovskite-type oxide present in the skeletal body, wherein
• the zeolite-type compound is selected from the group consisting of zeolites, cation exchanged zeolites and silicalites,
• a framework of the zeolite-type compound is selected from the group consisting of FAU type (Y type or X type), MTW type, MFI type (ZSM-5), FER type (ferrierite), LTA type (A type), MWW type (MCM-22), MOR type (mordenite), LTL type (L type), and BEA type (beta type),
• the skeletal body has channels connecting with each other,
• the metal oxide nanoparticle is present at least in the channels of the skeletal body,
• the channels have any one of a one-dimensional pore, a two-dimensional pore, and a three-dimensional pore defined by a framework of the zeolite-type compound and an enlarged pore portion with a diameter greater than that of any of the one-dimensional pore, the two-dimensional pore, and the three-dimensional pore and not defined by the framework of the zeolite-type compound, and the enlarged pore portion is greater than or equal to a diameter of the metal oxide nanoparticle,
• a particle size of the metal oxide nanoparticle is greater than an inner diameter of any one of the one-dimensional pore, the two-dimensional pore, and the three-dimensional pore defined by the framework of the zeolite-type compound,
• the metal oxide nanoparticle is present at least in the enlarged pore portion,
• and
• the perovskite-type oxide is selected from the group consisting of LaBO3 (B═Mn, Cr, Co, Fe, Al, Pd or Mg), BaZrO3, La0.8Sr0.2Ga0.8Mg0.2O3 (LSGM), LaFe0.57Co0.38Pd0.05O3, Ba0.8La0.2Mn0.2O3.