Deformation of Ordered Mesoporous Silica Structures on Exposure to High Temperatures

Figure 6

TEM images for SBA-15. (a) Image of the pore structure in S-AP. The DDP obtained from the area indicated by the dashed box is inset and Miller indices are given. (b) Image showing the linear pore structure of S-AP. The variation of contrast along the line in the image is given in (i) where pore spacing (arrows) and wall thickness (dashed lines) are indicated. (c) Image of S-900. The DDP obtained from the area indicated by the dashed box is inset and Miller indices are given. (d) Image showing the linear pore structure of S-900. The variation of contrast along the line in the image is given in (ii) where pore spacing (arrows) and wall thickness (dashed lines) are indicated. (e) Image of S-900 showing a region of essentially nonporous amorphous silica.