Method for oxidizing carbon monoxide in a gas stream containing

Details Method for oxidizing carbon monoxide in a gas stream containing Method for oxidizing carbon monoxide in a gas stream containing

1996-04-26

1998-12-15

Straub, Gary P.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon monoxide component

4232135, 423246, B01D 5362, B01D 5394

Patent

active

058492569

ABSTRACT:
A method for oxidizing carbon monoxide in a waste gas stream that also contains sulfur dioxide is carried out by contacting the waste gas stream under oxidizing conditions with an oxidation catalyst which is effective for promoting the oxidation of carbon monoxide but produces less sulfur trioxide from the sulfur dioxide. The catalyst according to the invention contains platinum dispersed on a refractory inorganic oxide support material with a So.sub.3 -inhibiting quantity of a bismuth compound, such as Bi.sub.2 O.sub.3. The atomic molar ratio of bismuth to platinum is in the range of from about 0.1:1 to 6:1, e.g., 0.5:1 to 3:1, e.g., 1:1.

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