The　conversion　of　terpinolene　epoxide　to　terpinen-4-ol　is　a　desirable　chemical　transformation　for　the　pro-duction　of　a　valuable　intermediate.　This　paper　describes　a　one-pot,　two-step　system　for　the　reaction　that　uses　a　bifunctional　Ni/TiO2-SiO2　catalyst　with　isomerization　and　hydrogenation　capabilities.　The　TiO2-　SiO2　serves　to　isomerize　the　starting　epoxide.　The　Ni　component　works　to　hydrogenate　the　allylic　double　bond.　The　tandem　system　achieves　a　high　64%　yield　of　terpinen-4-ol.　X-ray　diffraction　analysis　showed　that　TiO2-SiO(2　)was　a　mixed　binary　oxide,　and　Fourier　transform　infrared　spectroscopy　of　adsorbed　pyr-idine　suggested　that　acid　sites　were　mainly　Lewis　acid　sites.　Electron　microscopy　showed　that　the　Ni/TiO2-SiO2　catalyst　consisted　of　spherical　particles　comprising　a　titanosilicate　phase　with　highly　dispersed　zero-valent　Ni　or　anatase　on　the　surface.　Additionally,　there　was　strong　interaction　between　Ni　and　the　TiO2-SiO2　mixed　oxides.　Control　kinetic　experiments　demonstrated　that　the　tandem　use　of　the　catalysts　was　more　effective　than　simultaneous　operation.　(C)　2022　Published　by　Elsevier　Ltd.