物理学报2011，Vol.60Issue(6)：726-734,9.
MoO3在多孔γ-Al2O3中固熔分散的研究
Solid state dispersions of MoO3 into porous γ-A12O3
摘要
Abstract
A series of the MoO3/-γ-Al2 O3 samples is prepared by mechanically mixing MoO3 with γ-Al2 O3 powder. The solid state dispersion of the MoO3 in to the porous γ-Al2 O3 is studied by SEM, XRD, XPS, TG/DTA, and positron annihilation spectroscopy. The positron annihilation lifetime spectra of the MoO3/γ-Al2 O3 are measured as a function of the mass ratio of MoO3, heating temperature, heating time and in a way that the MoO3 is loaded gradually, separately. The experimental results show the process of the thermal dispersion of the MoO3 into the γ-Al2O3 support. It is shown that the MoO3 disperses into the outer surface first, and then into the secondary pores and the micro pores. The gradual Loading can make MoO3 effectively dispersed into γ-Al2O3. Grinding can also affecte the thermal dispersion process.关键词
正电子湮没谱学/三氧化钼/分散/逐次加载Key words
positron annihilation spectroscopy/ molybdenum trioxide/ dispersion/ loading gradually引用本文复制引用
康婷霞,毕翱翔,朱俊..MoO3在多孔γ-Al2O3中固熔分散的研究[J].物理学报,2011,60(6):726-734,9.基金项目
国家自然科学基金(批准号:10675093)资助的课题. （批准号:10675093）
