Probing the Catalytic Efficiency of Supported Heteropoly Acids for Esterification: Effect of Weak Catalyst Support Interactions

Figure 3

(a) Esterification of acetic acid with heptanol in the presence of HPW-K, HPW-M, and HPW-B using 0.02 g of catalysts. (b) Same esterification reactions carried out using 0.1 g of the catalyst. Notably, HPW-S showed extremely low catalytic activity when 0.02 g of the catalyst was used.

(a)

(b)