Gasochromic property of dehydrogenation-catalyst loaded tungsten trioxide

► Tungsten trioxide (WO3) powders with loading 0.1-1 wt% catalysts were prepared. ► The Pt/WO3 showed its coloration at lower temperatures in exposure to cyclohexane. ► The 0.5 wt% Pt/WO3 demonstrated its coloration at lower temperatures. ► The heating of 0.5 wt% Pt/WO3 at above 130 °C was required to detect 1 vol% cyclohexane. ► The x value in colored Pt/WO3, Pt/HxWO3, was 0.15-0.16 under different Pt contents.