TH70430A - The preparation of the catalog based on Vanadium-Antimony-Oxide using Namo-Iron Scale - Google Patents

Abstract

DC60 (03/02/47) is a process for the production of vanadium antimony oxide, an iron-promoting catalytic converter used in the amoxidation of propane to acrylonitrile, where the iron source (i.e., an iron-containing compound such as Fe2O3) used in the preparation of the catalytic converter has a BET surface area greater than 120 m²/g. Such catalysts are used in processes for the amoxidation of C3-C5 paraffinic hydrocarbons to their corresponding alpha-beta-unsaturated nitriles, the amoxidation of propylene with NH3 and oxygen to acrylonitrile, the amoxidation of methylpyridin with NH3 and oxygen to make cyanopyridin, the amoxidation of m-xylene with NH3 and oxygen to make isophthalonitrile, and the oxidation of o-xylene to make phthalic anhydride. In the process for the production of vanadium antimony oxide, modified iron-promoting catalysts are used in the amoxidation of propane to acrylonitrile. Where the source of iron (i.e., an iron-containing compound such as Fe2O3) used in the preparation of the catalytic material has a BET surface area greater than 120 m²/g, such catalytic materials are used in processes for the amoxidation of C3-C5 paraffinic hydrocarbons to their corresponding alpha-beta-unsaturated nitriles, the amoxidation of propylene with NH3 and oxygen to acrylonitrile, the amoxidation of methylpyridin with NH3 and oxygen to cyanopyridin, the amoxidation of m-xylene with NH3 and oxygen to isophthalonitrile, and the oxidation of o-xylene to phthalic anhydride.

Claims (11)

1. Method for the preparation of vanadium antimony oxide catalysts that promote iron with an atomic ratio of iron to vanadium greater than 0.2, where the iron source used in the preparation of the catalyst is an iron compound with a BET surface area greater than 120 m2/g. 2. Method of claim 1 in which compounds containing iron have a BET surface area greater than 150 m2./g. 3. Method of claim 1 in which compounds containing iron have a BET surface area greater than 200 m2./g. 4. Method of claim 1 in which a compound containing iron is selected from a group consisting of iron oxides, iron hydroxides, iron carbonates and mixtures of these substances. 5. Method of Claim 1 where the vanadium-antimony oxide catalyst that promotes iron consists of vanadium, antimony, iron, at least one selective tin, titanium, and at least one selective promoting element chosen from a group consisting of lithium, magnesium, sodium, calcium, strontium, barium, cobalt, chromium, gallium, nickel, zinc, germanium, niobium, zirconium, molybdenum, tungsten, copper, tellurium, tantalum, selenium, bismuth, cerium, indium, arsenic, boron, aluminum, and manganese, where the relative proportions of these elements are represented by the following general formula; VaSbbAcFedDeOx where A is present as at least one of Sn, and Ti, D is present as at least one of Li, Mg, Na, Ca, Sr, Ba, Co, Cr, Ga, Ni, Zn, Ge, Nb, Zr, Mo, W, Cu, Te, Ta, Se, Bi, Ce, In, As, B, Al, and Mn, and where a is 1, 0.5 less than or equal to b less than or equal to 10, 0.2 less than or equal to d less than or equal to 10, 0 less than or equal to e less than or equal to 10, and x is determined by the oxidation state of the cation present. 6. Method of Claim 1 where vanadium antimony oxide catalyst promoting iron consists of vanadium, antimony, iron, molybdenum, arsenic, at least one of tin, titanium, chromium and gallium, and at least one other promoting element chosen from the group consisting of lithium, magnesium, sodium, calcium, strontium, barium, cobalt, chromium, gallium, nickel, zinc, germanium, niobium, zirconium, molybdenum, tungsten, copper, tellurium, tantalum, selenium, bismuth, cerium, indium, arsenic, boron, aluminum, and manganese, where the relative proportions of these elements are represented by the following formula; VaSbAcFedDeQfRgOx where A is at least one of Ti, Sn, Cr, and Ga. D is at least one of Li, Mg, Ca, Sr, Ba, Co, Ni, Zn, Ge, Nb, Zr, W, Cu, Te, Ta, Se, Bi, Ce, In, B, Al, and Mn. Q is Mo, R is As. a is 1, 0.8 is less than or equal to b is less than or equal to 4, 0.1 is less than or equal to c is less than or equal to 2, 0.2 is less than or equal to d is less than or equal to 2, 0 is less than or equal to e is less than or equal to 2, 0 is less than or equal to f < 0.01, 0 is less than or equal to g < 0.1. 7. Method of claim 3, where 0 < f < 0.0045 8. Vanadium-antimony oxide catalyst promoted by iron consists of vanadium, antimony, iron, selectively one of tin and titanium, and selectively one of the promoting elements chosen from the group of lithium, magnesium, sodium, calcium, strontium, barium, cobalt, chromium, gallium, nickel, zinc, germanium, niobium, zirconium, molybdenum, tungsten, copper, tellurium, tantalum, selenium, bismuth, cerium, indium, arsenic, boron, aluminum, and manganese, where the relative proportions of these elements are represented by the following formula; VaSbbAcFedDeOx where A is present as at least one of Sn and Ti, D is present as at least one of Li, Mg, Na, Ca, Sr, Ba, Co, Cr, Ga, Ni, Zn, Ge, Nb, Zr, Mo, W, Cu, Te, Ta, Se, Bi, Ce, In, As, B, Al, and Mn, and where a is 1, 0.5 less than or equal to b less than or equal to 10, 0 less than or equal to c less than or equal to 10, 0.2 less than or equal to d less than or equal to 10, 0 less than or equal to e less than or equal to 10, and x is determined by the oxidation state of the presence of cation, and where the source of iron used in the preparation of the catalyst is an iron compound with an iron surface area BET greater than 120 m2/g. 9. Vanadium-antimony oxide catalyst that promotes iron consists of vanadium, antimony, iron, molybdenum, arsenic, at least one of tin, titanium, chromium, and gallium, and at least one other promoting element selected from a list of lithium, magnesium, sodium, calcium, strontium, barium, cobalt, chromium, gallium, nickel, zinc, germanium, niobium, zirconium, molybdenum, tungsten, copper, tellurium, tantalum, selenium, bismuth, cerium, indium, arsenic, boron, aluminum, and manganese, where the relative proportions of these elements are represented by the following formula; VaSbAcFedDeQfRgOx where A is at least one of Ti, Sn, Cr, and Ga. D is at least one of Li, Mg, Ca, Sr, Ba, Co, Ni, Zn, Ge, Nb, Zr, W, Cu, Te, Ta, Se, Bi, Ce, In, B, Al, and Mn, Q is Mo, R is As, a is 1, 0.8 less than or equal to, b less than or equal to 4, 0.1 less than or equal to, c less than or equal to 2, 0.2 less than or equal to, d less than or equal to 2, 0 less than or equal to, e less than or equal to 2, 0 less than or equal to, f < 0.01, 0 less than or equal to < 0.1, x is determined by the oxidation state of the presence of cation and where the iron source used in the preparation of the catalyst is an iron-containing compound with a BET surface area greater than 120 m2/g. 10. Method of claim 9, where 0 < f < 0.0045 11. A process for the production of at least one of the acrylonitrile and methacrylonitrile, by vapor phase catalytic reaction of paraffin selected from propane and isobutane containing oxygen and ammonia molecules by catalytic contact of a reactant in the reaction zone, in which the catalytic material contains vanadium, antimony iron, molybdenum, arsenic, at least one of the tin, titanium, chromium, and gallium, and at least one other selected promoter element. The group comprising lithium, magnesium, sodium, calcium, strontium, barium, cobalt, chromium, gallium, nickel, zinc, germanium, niobium, zirconium, molybdenum, tungsten, copper, tellurium, tantalum, selenium, bismuth, cerium, indium, arsenic, boron, aluminum, and manganese, where the relative proportions of these elements are represented by the following formulas; VaSbbAcFedDeQfRgOx where A is at least one of Ti, Sn, Cr, and Ga. D is at least one of Li, Mg, Ca, Sr, Ba, Co, Ni, Zn, Ge, Nb, Zr, W, Cu, Te, Ta, Se, Bi, Ce, In, B, Al, and Mn, Q is Mo, R is As, a is 1, 0.8 less than or equal to, b less than or equal to 4, 0.1 less than or equal to, c less than or equal to 2, 0.1 less than or equal to, d less than or equal to 2, 0 less than or equal to, e less than or equal to 2, 0 less than or equal to, f < 0.01 and appropriately 0 < f < 0.0045, 0 less than or equal to, g < 0.1, x is determined by the oxidation state of the presence of a cation. And where the source of iron used in the preparation of catalyst is an iron-containing compound with a BET surface area greater than 120 m2/g.