GB945022A - Catalysts for the oxidation of sulphur dioxide to sulphur trioxide - Google Patents

Catalysts for the oxidation of sulphur dioxide to sulphur trioxide

Info

Publication number
GB945022A
GB945022A GB464362A GB464362A GB945022A GB 945022 A GB945022 A GB 945022A GB 464362 A GB464362 A GB 464362A GB 464362 A GB464362 A GB 464362A GB 945022 A GB945022 A GB 945022A
Authority
GB
United Kingdom
Prior art keywords
oxide
mixture
group
metal
pyrosulphates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB464362A
Inventor
Karl Wimmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DEB61170A external-priority patent/DE1133350B/en
Application filed by BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB945022A publication Critical patent/GB945022A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/04—Mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/30—Tungsten

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)

Abstract

SO2 and O2 are converted to SO3 using a vanadium-containing catalyst supported on a silicate carrier material prepared by applying a mixture of V2O5 or a precursor therefor with an oxide of a metal from Group IVA and VIA of the Periodic System or heterepolyacid containing such an oxide in combined form and also a mixture of K2S2O7 with the pyrosulphates or precursors therefor or sulphates of other metals of Group I, to a silicic acid which has been obtained by precipitation of an alkali silicate solution with dilute acid and then calcined at temperatures of 200-700 DEG C., preferably 300-500 DEG C., the molar ratio of V2O5 to the oxide of Group IVA and VIA being 4 : 1 to 1 : 3, the molar ratio of K2S2O7 to the pyrosulphates or sulphates of metals of Group I being 8 : 1 to 1 : 2 and the weight ratio of the metal oxide mixture to the pyrosulphate and sulphate mixture being 0.15-0.5. Examples are given.ALSO:A vanadium-containing catalyst supported on a silicate carrier material for the oxidation of sulphur dioxide to sulphur trioxide with oxygen or oxygen-containing gases is prepared by applying a mixture of V2O5 or a precursor therefor with an oxide of a metal from Group IVa and VIa of the Periodic System or heteropolyacid containing such an oxide in combined form and also a mixture of potassium pyrosulphate with the pyrosulphates or precursors therefor or sulphates of other metals of Group Ia or Ib, to a silicic acid which has been obtained by precipitation of an alkali silicate solution with dilute acid and then calcined at temperatures of 200-700 DEG C., preferably 300-500 DEG C., the molar ratio of vanadium pentoxide to the oxide of a metal of Group IVa and VIa being 4 : 1 to 1 : 3, the molar ratio of potassium pyrosulphate to the pyrosulphates or sulphates of metals of Group Ia and Ib being 8 : 1 to 1 : 2 and the weight ratio of the metal oxide mixture to the pyrosulphate and sulphate mixtures being 0,15-0,5. Additionally the catalyst may contain cerium oxide. Examples are given in which heteropolyacid elements present include B, Al, Si and P and mention is made of Ag and Rb salts.
GB464362A 1961-02-08 1962-02-07 Catalysts for the oxidation of sulphur dioxide to sulphur trioxide Expired GB945022A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB61170A DE1133350B (en) 1961-02-08 1961-02-08 Process for the production of a vanadium-containing catalyst applied to a silicate carrier material for the oxidation of sulfur dioxide to sulfur trioxide

Publications (1)

Publication Number Publication Date
GB945022A true GB945022A (en) 1963-12-18

Family

ID=6973096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB464362A Expired GB945022A (en) 1961-02-08 1962-02-07 Catalysts for the oxidation of sulphur dioxide to sulphur trioxide

Country Status (1)

Country Link
GB (1) GB945022A (en)

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