Catalytic removal of sulfur dioxide form flue gas

Details Catalytic removal of sulfur dioxide form flue gas Catalytic removal of sulfur dioxide form flue gas

1996-07-02

1998-09-08

Straub, Gary P.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

42324401, 42324409, 423247, 423437M, 423570, B01D 5350, B01D 5362

Patent

active

058041532

ABSTRACT:
The present invention discloses a method for the catalytic reduction of sulfur dioxide, for example in flue gas, by carbon monoxide using lanthanum oxysulfide as the active catalyst. The catalyst is prepared from lanthanum oxide by hydration and sulfidization, the latter step being carried out in the gas stream itself. This method of preparation has more general applicability and can also be used as a method for the preparation of lanthanum, yttrium, gadolinium and lutetium oxysulfides generally.

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Ma et al. "Activation of La.sub.2 O.sub.3 For The Catalytic Reduction of SO.sub.2 By Co" J. of Catalysis, vol. 163 No. 2 pp. 271-278, Oct. 1996.
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