EPMA定量分析における多孔質触媒に対する補正計算法 (修正ZAF法) の提案

抄録

The EMPA quantitative analysis has been considered unapplicable to porous matter. This investigation emphasizes the possibility of chemical analysis for the porous catalysts of two series of silica-alumina and one series of silica-magnesia having micro pores less than 100Å.
The density ρ in the mass absorption coefficient (μ/ρ) used in the conventional ZAF correction calculation is that of nonporous matter. In the modified ZAF method proposed here, the apparent density ρ_a, which is given by ρ(1-ε) with the void fraction ε, can be used for the porous sample analysed, while the value of ρ should be used only for the non-porous reference substance. This modified ZAF method appeared reasonable for three series of samples of porous catalysts with different void fractions.