Aluminium oxide
Aluminium oxides are used as a catalysts and are products of aluminium combustion. Organic peroxides of aluminium have explosive properties and can result in explosions with careless handling. An explosion of Octogen - Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) and aluminium produce aluminium oxide (Al2O3).