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Catalytic Reduction of Sulfur Dioxide on Iron-alumina Bifunctional Catalysts.

Authors
Khalafalla-SE; Foerster-EF; Haas-LA
Source
I&ec Product Res and Dev 1971 Jun; 10:133-137
Link
NIOSHTIC No.
10010629
Abstract
Mixtures of alumina and iron powder provide efficient catalysts for the interaction of low concentration of so2 with carbon monoxide The catalytic reaction rate at 500 deg. C depended significantly on the iron content of the binary catalyst mixture. Mixtures containing 43 percent freshly reduced iron exhibited a sharp peak in the catalytic activity at 500 deg. C when compared with other catalyst compositions. The normalized reaction rate per gram of iron, instead of per gram of total catalyst, still portrayed a sharp maximum when plotted against the weight fraction of iron in the catalyst. This fact, in addition to nonsynergistic effects observed with iron-silica mixtures, disqualifies interpretations based solely on the antisintering or supportive action of alumina on iron. The results are best explained on the basis of a dual reaction site mechanism with both iron and alumina augmenting their specific sites activity at their interparticle contacts.
Publication Date
19710601
Document Type
OP;
Fiscal Year
1971
NTIS Accession No.
NTIS Price
Identifying No.
OP 124-71
NIOSH Division
TCRC;
Source Name
I&ec Product Res. and Dev., V. 10, June 1971, PP. 133-137
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