Preparation of Mesoporous Ce0.5 Zr0.5 O2 Mixed Oxide by Hydrothermal Templating Method

O643.3; Mesoporous Ce0.5Zr0.5O2 mixed oxide with high specific surface area was synthesized under basic condition in the presence of non-ionic surfactant PEG-4000.The effect of synthesis conditions, such as synthesis temperature and the molar ratio of PEG-4000/([Ce]+[Zr]), on specific surface area were investigated.The products were characterized by transmission electron microscopy, powder X-ray diffraction, and nitrogen adsorption-desorption measurements, respectively.The results showed that synthesis temperature and the molar ratio of PEG-4000/([Ce]+[Zr]) had great influence on specific surface area.Under the optimum synthesis conditions, the prepared Ce0.5Zr0.5O2 mixed oxide presented cubic fluorite-type structure and possessed high surface area of 148.6 m2·g-1 with wormlike pores.