SULPHUR SYNTHESIS METHOD AND METHOD OF PREPARING SULPHUR SYNTHESIS CATALYST Russian patent published in 2010 - IPC C01B17/04 B01J37/02 B01J37/08 

FIELD: chemistry.

SUBSTANCE: sulphur is obtained via oxidation of hydrogen sulphide contained in gas streams with oxygen or air in a layer with a fixed or fluidised bed of heterogeneous catalyst on a silicon-containing support at 180-320°C in molar ratio oxygen: hydrogen sulphide equal to 0.5-5. The catalyst contains phosphates or fluorides or borates or a mixture of these metal salts selected from: iron, cobalt, nickel, copper or mixture thereof, and contains hydroxyl groups in amount of 0.05-20 mcmol/g. In the first version, powder of the silicon-containing support is pre-treated with phosphoric acid or hydrofluoric acid or boric acid while stirring. Granules are then formed, dried, calcined and saturated with a salt solution of a metal selected from: iron, cobalt, nickel, copper or mixture thereof. In the second version, powder of the silicon-containing support is mixed with a salt solution of a metal selected from: iron, cobalt, nickel, copper or mixture thereof, and then treated with phosphoric or hydrofluoric or boric acid, followed by formation of granules, drying and calcination. In the third version, the silicon-containing support is granulated, dried and calcined, treated with phosphoric or hydrofluoric or boric acid and then saturated with a salt of a metal selected from: iron, cobalt, nickel, copper or mixture thereof and then calcined again.

EFFECT: invention increases output of sulphur.

7 cl, 2 tbl