Ghanaian Clay as a Catalyst for Transesterificating Shea Butter Oil as Alternative Feedstock for Green Energy Production

Figure 2

(a) SEM image of activated dolomite (AC), (b) SEM image of ZnO doped on activated clay (ZD), and (c) SEM image of SnO₂ doped on activated clay (SD).

(a)

(b)

(c)