Solvothermal synthesis and characterization of silica-pillared titanium phosphate

Abstract

Silica-pillared titanium phosphate has been synthesized from Ti(OC₄H₉)₄-H₃PO₄-H₂N(CH₂)₃Si(OC₂H₅)₃-C₂H₅OH and characterized by XRD, SEM, IR and TGA. The synthesis conditions were investigated and the optimal conditions are reported: crystallization at 180°C for about 7 days with a batch composition of 1.0 Ti(OC₄H₉)₄:3.6 H₃PO₄:1.0 H₂N(CH₂)₃Si(OC₂H₅)₃:33 C₂H₅OH. XRD analysis gives the lattice parameters of the monoclinic cell as a=1.99952 nm, b=0.41803 nm, c=0.90062 nm, β=97.462°, V=0.74642 nm³, and Z=2. N₂ adsorption-desorption test shows that the pillared compound has a BET surface area of 51 m² g^–1.

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