A Comparative Characterization of the HPA-MCM-48 Type Catalysts Produced by the Direct Hydrothermal and Room Temperature Synthesis Methods

Figure 9

SEM photographs: (a) MCM-48-HTS, (b) MCM-48-RTS, (c) HTS-40%, and (d) RTS-40%.

(a)

(b)

(c)

(d)