Synthesis of Ca-Doped Three-Dimensionally Ordered Macroporous Catalysts for Transesterification

Figure 2

SEM images of 3DOM CaO/Al₂O₃ (a) at 700°C (×40000) and (b) at 800°C (×20000) and (c) 3DOM Ca₁₂Al₁₄O₃₂Cl₂ at 700°C (×40000).

(a)

(b)

(c)