METHOD OF MAKING CATALYTICALLY ACTIVE GEOMETRIC MOULDED ARTICLES Russian patent published in 2013 - IPC B01J37/04 B01J37/08 B01J23/16 B01J23/28 B01J23/30 B01J23/745 B01J35/00 C07C57/05 C07C47/22 

FIELD: chemistry.

SUBSTANCE: described is a method of making catalytically active geometric moulded articles K, which contain as active mass, a multi-element oxide I with general stoichiometric formula (I): [Bi_nZ¹ _bO_x]_p[Bi_cMo₁₂Fe_dZ² _eZ³ _fZ⁴ _gZ⁵ _hZ⁶ _iO_y]₁ (I), according to which Z¹ denotes tungsten or tungsten and molybdenum, under the condition that the amount of tungsten is at least 10 mol % of the total molar amount Z¹, Z² denotes an element or multiple elements selected from a group which includes nickel and cobalt, Z³ denotes an element or multiple elements selected from a group which includes alkali metals, alkali-earth metals and gallium, Z⁴ denotes an element or multiple elements selected from a group which includes zinc, phosphorus, arsenic, boron, antimony, tin, cerium, vanadium and chromium, Z⁵ denotes an element or multiple elements selected from a group which includes silicon, aluminium, titanium, tungsten and zirconium, Z⁶ denotes an element or multiple elements selected from a group which includes copper, silver, gold, yttrium, lanthanum and lanthanides, a is a number from 0.1 to 3, b is a number from 0.1 to 10, d is a number from 0.01 to 5, e is a number from 1 to 10, f is a number from 0.01 to 2, g is a number from 0 to 5, h is a number from 0 to 10, i is a number from 0 to 1, p is a number from 0.05 to 6, and x, y are respectively numbers defined by valence and number of atoms other than oxygen atoms in formula (1), wherein a fine mixed oxide Bi_aZ'_bO_x is formed in form of a starting mass A1, the particle diameter $$d_{50}^{A1}$$ of which satisfies the condition $$1mcm\le d_{50}^{A1}\le 100mcm,$$ using sources, other than oxygen, of elements of the component part T of the multi-element oxide I, represented by [Bi_cMo₁₂Fe_dZ^2cZ³ _fZ⁴ _gZ⁵ _hZ⁶ _iO_y]_i, a homogeneous aqueous mixture M is formed in an aqueous medium, wherein: each of the sources used when forming the aqueous mixture M passes through a dispersion degree Q, characterised by that the particle diameter corresponds to $$d_{90}^Q\le 5mcm,$$ and the aqueous mixture M contains bismuth, molybdenum, iron, Z², Z³, Z⁴, Z³ and Z⁶ in the stoichiometric formula (I*): Bi_cMo₁₂Fe_dZ² _cZ³ _fZ⁴ _gZ⁵ _hZ⁶ _i (I*); from the aqueous mixture M, by drying and controlling the dispersion degree $$d_{90}^{A2},$$ a fine starting mass A2 is formed, the particle diameter $$d_{90}^{A2}$$ of which satisfies the condition $$400mcm\ge d_{90}^{A2}\ge 10mcm;$$ the starting mass A1 is mixed with starting mass A2 or the starting mass A1, starting mass A2 and a fine auxiliary moulding agent are mixed to obtain a fine starting mass A3, which contains elements of the multi-element oxide I other than oxygen that are introduced therein through starting mass A1 and A2, in stoichiometric formula (1**): [Bi_aZ'_b]_p[Bi_cMo₁₂Fe_dZ² _eZ³ _fZ⁴ _gZ⁵ _hZ⁶ _i]l (I**);geometric moulded articles V are formed from the fine starting mass A3; the moulded articles V undergo heat treatment at high temperature to obtain catalytically active geometric moulded articles K, wherein the stoichiometric coefficient "c" lies in the range 0<c≤0.8.

EFFECT: described is a method for heterogeneously catalysed partial gas-phase oxidation of an alkane, alkanol, alkanal, alkene and/or alkenal containing 3-6 carbon atoms in a catalyst bed, wherein the catalyst bed contains catalytically active moulded articles which can be made using said method.

15 cl, 3 tbl, 13 ex