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用实验方法考察了磷改性对γ－Ａｌ＿２Ｏ＿３的物理和化学性能的影响，研究表明，磷酸盐与γ－Ａｌ＿２Ｏ＿３的反应容量有限，且存在着一个平衡点，磷改性在一定程度上能降低γ－Ａｌ＿２Ｏ＿３的表面积和孔体积，并同时能改变γ－Ａｌ＿２Ｏ＿３的表面酸性，使γ－Ａｌ＿２Ｏ＿３表面酸强度减弱。
The effects of phosphorus modification on the physical and chemical properties of γ-Al 2 O 3 were investigated experimentally. The results showed that the reaction capacity between phosphate and γ-Al 2 O 3 is limited, and there is a balance point. The phosphorus modification can be reduced to a certain extent γ-Al 2 O 3 surface area and pore volume, and at the same time can change the surface acidity of γ-Al 2 O 3 so that γ-Al 2 O 3 surface acid strength is weakened.