Preheated methanol $CH_3OH$ is introduced in a beaker glass. A platinum foil $Pt$ is heated and then introduced over the methanol:
Note that the platinum remains red, the reaction is exothermic, a colourless gas is released, the platinum catalyst is restituted at the end of reaction. $2CH_3OH$ $ +$ $O_2$ $\longrightarrow$ $2HCHO$ $+$ $2H_2O$ The reaction produces colourless methanal gas (formaldehyde)
Video adapted from ASTAO security ressources