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  Home > JCE Print > Journal of Chemical Education > Issues > 2005  > August  >
In the Laboratory
Photocatalytic Oxidation of Sulfurous Acid in an Aqueous Medium
Alicia Romero, Guillermo Hernández, and Marco F. Suárez
Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá, Columbia
Cover
August 2005
Vol. 82 No. 8
p. 1234
Abstract
The photooxidation process of sulfurous acid by molecular oxygen in the presence of TiO2 is described. The effect of some reaction parameters, such as initial concentration of sulfurous acid, oxygen, TiO2 crystalline structure, and quantity of TiO2, were investigated. The reactions were run in an inexpensive reactor. The experiments are ideal for second-year chemistry undergraduate students interested in photocatalysis and green chemistry. Finally, a kinetic equation for the oxidation process of sulfurous acid was established in our experimental conditions.
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Instructions for the students and notes for the instructor are available.
*  Contents JCE2005p1234W.doc (Microsoft Word)
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*  Citation
 Romero, Alicia; Hernández, Guillermo; Suárez, Marco F. J. Chem. Educ. 2005 82 1234.
*  Keywords
 Catalysis; Environmental Chemistry; Green Chemistry; Hands-On Learning / Manipulatives; Kinetics; Laboratory Instruction; Physical Chemistry; Problem Solving / Decision Making; Second-Year Undergraduate
*  History
 Created:
Last Updated:		 July 5, 2005
July 8, 2005
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