Esterification of a waste produced from the palm oil industry over 12-tungstophosforic acid supported on kaolin waste and mesoporous materials

摘要

In this work, kaolin waste, MCM-41, MCM-48, and SBA-15 were impregnated with H3PW_(12)O_(40) (HPW). The obtained solid acid catalysts were characterized by various techniques, such as XRF, XRD, FTIR and N2 adsorption. The surface acidities were measured by acid-base titration of KOH. The catalytic activities of the catalysts in the esterification reaction of a waste produced during the deodorization processes of palm oil (DDPO) were studied. The results revealed that the materials have great potential in promoting heterogeneous acid-catalyzed organic transformations.