Wells-Dawson structured heteropoly acid (H6P2W18O64) was immobilized into the SBA-16 mesoporous material by ship-in-a-bottle method. The obtained material was characterized by Fourier transform infrared (FT-IR) and inductively coupled plasma-atomic emission (ICP-AES) spectroscopies, X-ray diffraction (XRD), transmission electron microscopy (TEM), nitrogen adsorption-desorption analysis, and thermogravimetric analyses (TGA-DTA). The results indicated that the surface area of SBA-16 support decreased after immobilization of the heteropoly acid and next modification with silylating agent. The prepared material exhibited excellent catalytic performance in the epoxidation of olefins and allylic alcohols in the presence of hydrogen peroxide as green oxidant. The catalyst showed all of the expected advantages of the heterogeneous systems and was shown to be recoverable and reusable several times without major loss of activity. (C) 2016 Elsevier B.V. All rights reserved.