【摘要】 采用气相流动吸附法制备TiO₂/γ-Al₂O₃复合载体,以TiO₂含量为0.18gTiO₂/gγ-Al₂O₃的样品为典型载体,用干混法和浸渍法制得MoO₃/TiO₂/γ-Al₂O₃催化剂。用XRD和LRS等技术研究了MoO₃在TiO₂/γ-Al₂O₃复合载体表面的分散状态和最大分散量。结果表明,在420℃下焙烧的催化剂,MoO₃在复合载体表面的最大分散量为0.24gMoO₃/gTiO₂/γ-Al₂O₃（相当于0.12gMoO₃/100m²TiO₂/γ-Al₂O₃）,最大分散量随催化剂焙烧温度的上升而增加。更多还原

【Abstract】 A TiO₂/γ-Al₂O₃ complex support was prepared by a gas-flow continuum adsorption method. With a typical sample containing 0.18 g TiO₂/gγ-Al₂O as the support,MoO₃/gTiO₂/γ-Al₂O₃ catalysts were made by impregnation and dry mixed methods.XRD,LRS etc.techniques were employed in examining the maximum dispersion capacity and dispersion state.The data collected suggest that the maximum dispersion capacity of MoO₃ on the complex support surface is 0.24MoO₃/gTiO₂/γ-Al₂O₃（equivalent to 0.12MoO₃/100m²TiO₂/γ-Al₂O₃）for the catalyst calcinated at 420℃.The maximum dispersion capacity is raised with the increase of catalyst calcination temperature.更多还原