METHOD OF PRODUCING ACROLEIN THROUGH HETEROGENEOUSLY CATALYSED OXIDATION OF PROPENE IN GASEOUS PHASE Russian patent published in 2009 - IPC B01J23/888 C07C45/35 C07C47/22 B01J35/02 

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing acrolein through heterogeneously catalysed partial oxidation of propene in a gaseous phase and a catalyst for producing acrolein. A method is described for producing acrolein through heterogeneously catalysed partial oxidation in a gaseous phase, in which the initial gaseous reaction mixture, which contains propene, molecular oxygen and at least one inert gas, where molecular oxygen and propene are in molar ratio of O₂:C₃H₆≥1, as well as carbon dioxide and saturated hydrocarbons together in total amount of at most 15 mol %, is passed through a fixed catalyst bed at high temperature while loading the fixed catalyst bed with propene contained in the gaseous reaction mixture at a rate ≥120 nl/l·h, where the catalysts are in form of annular solid catalysts, the active mass of which is at least one multimetal oxide of general formula I, Mo₁₂W_aCo_bFe_cBi_dSi_eK_fO_n (I), where a ≥1 to ≤3, b ≥3 to ≤8, c ≥1 to ≤4, d ≥0.5 to ≤1.5, e ≥0 to ≤10, f ≥0 to ≤0.2 and n is a number which is determined by valency and number of elements in formula I which are not oxygen, so that conversion of propene in a single passage is ≥90 mol % and associated selectivity of formation of acrolein is ≥80 mol %. The following mass ratios are also satisfied in the mass of multimetal oxides I: Co/Fe=2 to 3.5 and Co/Mo=0.5 to 0.7. Also described is an annular, solid catalyst, active mass of which is a multimetal oxide of general formula I, under the condition that, the following molar ratios are also satisfied in the mass of multimetal oxide I: Co/Fe=2 to 3.5 and Co/Mo=0.5 to 0.7.

EFFECT: achieving given conversion of propene at low temperature of the hot-spot of the fixed catalyst bed and high selectivity of the desired product.

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