Method of manufacturing acrolein on the basis of the redox propylene by reaction in the reactor to bed and the use of a solid composition of mixed oxides such as redox system in said reaction

摘要

The use of a solid oxide composition including elements from molybdenum, tungsten, bismuth, iron, cobalt, nickel, silicon, potassium and tin, in the vapour phase oxidation of propylene in the absence of molecular oxygen. Particulate solid composition comprising microspheres forming a porous core of mixed oxides of formula (I) : - Mo12WaBibFecCodNieSifKgTihOx ; (I) - in which a = 0 - 5 ; b = 0.5 - 5 ; c = 0.1 - 10 ; d = 0.5 - 10; e = 0 - 10; f = 0 - 15 ; g = 0 - 1l h = 0 - 2 ; and x is the amount of oxygen depending on the oxidation states. The oxide is coated with a porous outer layer of SiO2. Independent claims are also included for the method of preparation and use of the oxide composition.