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RESEARCH PAPERS

Sulfur Oxide Reactions: Radioactive Sulfur and Microprobe Studies of Corrosion and Deposits

[+] Author and Article Information
H. H. Krause, A. Levy, William T. Reid

Battelle Memorial Institute, Columbus Laboratories, Columbus, Ohio

J. Eng. Power 90(1), 38-44 (Jan 01, 1968) (7 pages) doi:10.1115/1.3609132 History: Received July 25, 1967; Online August 25, 2011

Abstract

The reactions of SO2 and SO3 with catalytic surfaces containing iron oxides, alone and in combination with various sodium salts, have been investigated. The SO3 concentration gradients above the surfaces were measured using a microprobe technique, showing that, as much as 2000 ppm SO3 can exist in a slowly flowing gas stream immediately next to a surface. Radioactive sulfur was employed as a tracer to determine the roles of SO2 and SO3 in reactions with these surfaces leading to formation of alkali iron trisulfates. These measurements indicated that on a molar basis, SO3 is 30,000 times more reactive than SO2 + O2 in forming complex sulfates with a mixture of sodium sulfate and iron oxide.

Copyright © 1968 by ASME
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