This work,using TiO2 micro particles with different geometries as an example,models opacifier optical
parameters’dependence on their shapes and sizes,and computes their average properties according to the actual size
distribution. In consideration of industrial applications,this work discusses the optimization of opacifier parameters to
minimize high temperature radiative transfer for spherical particle with a log-normal size distribution, achieving an
opacified aerogel’s radiative conductivity as low as 1/10 the value of pure aerogels.