Sulfur dioxide reduction process utilizing catalysts with spinel

Details Sulfur dioxide reduction process utilizing catalysts with spinel Sulfur dioxide reduction process utilizing catalysts with spinel

1977-12-27

1979-04-03

Peters, G. O.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423561, C01B 1704

Patent

active

041477634

ABSTRACT:
A catalytic process for the reduction to elemental sulfur of the sulfur dioxide contained in gas streams using a reducing gas such as hydrogen, or preferably carbon monoxide, in a reactor charged with a material represented by the general formula M.sup.II M.sub.2.sup. III O.sub.4 crystallized in the spinel structure wherein M.sup.II is a divalent metal and M.sup.III is a trivalent metal from the first transition period of the Periodic Table of the Elements, or derivatives of the materials of the above formula resulting from pretreatment with hydrogen or, preferably carbon monoxide, and/or exposure to the sulfur dioxide-containing gas stream.

REFERENCES:
patent: 3755550 (1973-08-01), Stiles
patent: 3904553 (1975-09-01), Campbell
patent: 4022870 (1977-05-01), Palilla et al.

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