Heterogeneous Tin Catalysts Applied to the Esterification and Transesterification Reactions
Figure 10
Effect of sulfated tin oxides NAS on the oleic acid conversion into ethyl oleate after esterification with ethyl alcohol; catalysts: (1) SnO2—773 K, (2) /SnO2—0.45–673 K, (3) /SnO2—0.45–773 K, (4) /SnO2—0.45–873 K, (5) /SnO2—0.3–773 K and (6) /SnO2—0.15–773 K [31]. (Reaction conditions: oleic acid : ethyl alcohol molar ratio (1 : 10); load catalyst (3% wt.); stirring (250 rpm); reaction temperature (353 K) time (4 hours) of reaction.)
