Abstract: Calcium titanium oxides porous nanostructure was prepared by using titanate butyl and anhydrous calcium chloride. The effects of solvothermal temperature on the properties of calcium titanium oxides porous nanostructure powders were studied. After calcium titanium oxides powder with porous nanostructure were pressed, firing temperature on the thermal stability of porous nanostructure were studied. The samples crystal phase, microstructure and thermal analysis were characterized by X-ray diffraction ( XRD) , scanning electron microscopy ( SEM) , transmission electron microscopy ( TEM) and differential thermal-thermogravimetric analyzer ( TG-DTA) . The porous properties were characterized by water absorption rate and apparent porosity. Experimental results show that when hydrothermal temperature is 180 ℃, the sample presents a porous structure. When the firing temperature is 600-1100℃, the sample after pressed present porosity with the apparent of 44 . 28;.

Key words: Calcium titanium oxides porous nanostructure was prepared by using titanate butyl and anhydrous calcium chloride. The effects of solvothermal temperature on the properties of calcium titanium oxides porous nanostructure powders were studied. After calcium titanium oxides powder with porous nanostructure were pressed, firing temperature on the thermal stability of porous nanostructure were studied. The samples crystal phase, microstructure and thermal analysis were characterized by X-ray diffraction ( XRD) , scanning electron microscopy ( SEM) , transmission electron microscopy ( TEM) and differential thermal-thermogravimetric analyzer ( TG-DTA) . The porous properties were characterized by water absorption rate and apparent porosity. Experimental results show that when hydrothermal temperature is 180 ℃, the sample presents a porous structure. When the firing temperature is 600-1100℃, the sample after pressed present porosity with the apparent of 44 . 28;.