Preparation of acrylic acid from propane in the presence of molecular oxygen and an oxide catalyst containing molybdenum, vanadium, tellurium and niobium

摘要

Oxidation of propane with molecular oxygen in sub-stoichiometric proportions relative to propane in the presence of a specified catalyst, the process operating as a redox system. Preparation of acrylic acid from propane, in which a gaseous mixture containing propane, molecular oxygen , water vapor and, if required, an inert gas is passed over a catalyst of formula (I): Mo1VaTebNbcSidOx; a, b, c : 0.006-1; d : 0-3.5; x : quantity of oxygen dependent on the oxidation states of the elements. The molar ratio of propane / oxygen is greater or equal to 0.5.