Encapsulating Keggin‐H3PW12O40 into UIO‐66(Zr) for manufacturing the biodiesel

Abstract

Abstract In the presence of acetic acid as modulated agent, Keggin‐H3PW12O40 (K‐PW12) has been encapsulated into UIO‐66(Zr) by the solvothermal method. The as‐synthesized K‐PW12@UIO‐66(Zr) composite has further been characterized by PXRD, TG, FTIR, ICP‐AES, N2 isothermal adsorption, SEM and TEM. The results exhibit that Keggin‐H3PW12O40 is entrapped into the interior cage of UIO‐66(Zr) framework which is enlarged by losing terephthalic acid linker in the presence of acetic acid. K‐PW12@UIO‐66(Zr) composite can efficiently catalyse the esterification of methanol and oleic acid into biodiesel.