Microencapsulation is used as a means to retain the activity of silicotungstic acid (STA), an industrially important catalyst, during repeated use in ethyl acetate synthesis reaction. Standard sol-gel microencapsulation procedures were modified to microencapsulate STA inside a silica shell. The microcapsules were characterized to determine their morphology, the presence and amount of the active material, and the pore structure. The activity of the catalyst was tested in an esterification reaction between acetic acid and ethanol. The catalyst was used multiple times after being washed and dried after each run. Results indicate no leaching of the active material and no significant loss in catalyst activity after repeated runs.