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66  D. J. MACQUARRIE



















































                               Figure 4.4. Preparation of MTS materials. The diagram shows self assembly of the
                               surfactant into micelles followed by condensation of silica around the micelles.
                               The micelles arrange themselves into an approximately hexagonal array. After the
                               formation of the silica around the micelles, the micelles are burnt out, leaving
                               pores where the micelles were. The pores are an accurate reflection of the size and
                               shape of the micelles. This makes the pores uniformly sized and shaped.
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