Date of Award

Summer 1991

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Chemistry & Biochemistry

Program/Concentration

Chemistry

Committee Director

Kenneth G. Brown

Committee Member

Robert L. Ake

Committee Member

Donald M. Oglesby

Committee Member

Billy T. Upchurch

Call Number for Print

Special Collections LD4331.C45D83

Abstract

Platinum-coated tin(IV) oxide catalysts have been developed for the recombination of carbon monoxide and oxygen at 55°C and 1 atmosphere of pressure in closed-cycle carbon dioxide lasers. A diffuse reflectance infrared fourier transform spectroscopic (DRIFTS) study of four of these catalysts during 5% carbon monoxide pretreatment at temperatures of 30°C, 100°c, 125°c, and 150°C has been performed. Evidence for the development of surface carbonate, bicarbonate, and formate species during pretreatment has been found. Dehydroxylation of the surface and loss of a partially charged hydrogen-bonded hydroxyl species have also been found to result from elevated temperature pretreatment. The four catalysts have also been investigated during exposure to a 2:1 stoichiometric mixture of carbon monoxide and oxygen at 55°C. Slow surface rehydroxylation has been detected over the course of this exposure.

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DOI

10.25777/mb7d-nj05

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