Preparation, characterization and application in deep catalytic ODS of the mesoporous silica pillared clay incorporated with phosphotungstic acid

► HPW heteropoly acid encapsulated into the mesoporous SPC. ► HPW was dispersed homogeneously in the HPW-SPC-SG samples. ► HPW-SPC-SG samples showed better catalytic performance than HPW-SPC-IM samples. ► HPW-SPC-SG catalysts exhibited good reusability.