4. RESULTS AND DISCUSSION
4.1 Physicochemical Properties
The SEM images of the prepared supports with various macropore size are shown in Figure 2. The sample of S0 exhibited packed aggregates of silica particles (no macropore), while the other samples (S50 ~ S6000) exhibited a honeycomb structure with macropores. From S50 to S6000, the size of the macropore increased gradually, and the results of SEM observations were in good agreement with those of mercury intrusion porosimetry as shown in Figure 1S(a) (see Supporting Information).