The effect of Ba loading on conversion was studied by conducting
transesterification at 60 C, 6:1 methanol ratio for 8 h of reaction
time and the conversions with the different loadings are
presented in Fig. 3. We have selected 8 h because in our previous
study the best activity for the parent catalyst TS-CaO was obtained
for 8 h. it was observed that the conversion >98% was possible with
1.0 wt% Ba loading beyond which the conversion decreased
slightly. The increase in conversion with Ba loading is attributed
to the presence CaO and BaO which might have acted like active
species during the reaction.