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对于８５～１０００ｎｍ的无孔单分散二氧化硅颗粒，采用重力沉降、离心沉降和压片等方法制备了孔结构模型，并采用扫描电镜（ＳＥＭ）、Ｎ２吸附法和压汞法考察了模型的结构特点。这种孔结构模型完全排除了微孔的存在，孔分布集中，孔径大小随着颗粒粒径的变化而变化，但孔隙度与粒径基本无关。由这３种方法得到的孔结构模型的孔隙度均小于３５％，孔径都没有超出球形颗粒不同的有序排列形式的间隙孔尺寸的理论范围（０．１５５～０．７３２倍粒径）。颗粒粒径的大小、制备方法对孔结构模型的结构有一定的影响
For the non-porous monodisperse silica particles of 85 ~ 1000nm, the pore structure model was prepared by gravity sedimentation, centrifugal sedimentation and tableting. The pore structure of the model was investigated by scanning electron microscopy (SEM), N2 adsorption and mercury intrusion Structural features. The pore structure model completely eliminates the existence of micropores, pore distribution, pore size changes with the particle size changes, but the porosity and particle size has nothing to do. The porosity of the pore structure models obtained by these three methods are all less than 35%, and the pore size does not exceed the theoretical range (0.155 ~ 0.732 times of the pore size) of the ordered arrangement of spherical particles. The size of the particles, the preparation method has a certain impact on the structure of the pore structure model