Keywords

Catalysts, Cerium oxides, Chemical kinetics, Electrolytic oxidation, Ethanol, Methanol

Abstract

A comparative study of the electro-oxidation of ethanol and methanol was carried out on a Pt/ceria composite electrode prepared by electro-deposition. Modification of the Pt electrode was realized by co-deposition from a 1.0 mM K₂PtCl₆ solution that also contained a 20 mM suspension of ceria. The electro-catalytic activities and stabilities of the Pt/ceria catalyst towards ethanol electro-oxidation reactions (EOR) and methanol electro-oxidation reactions (MOR) were investigated by potentiodynamic and potentiostatic methods in 0.5 M sulfuric acid and 1.0 M sodium hydroxide solutions at various concentrations of ethanol and methanol. The kinetics of ethanol and methanol on a Pt/ceria composite electrode were measured in 0.5 M sulfuric acid and 1.0 M sodium hydroxide solutions using a rotating disk electrode (RDE). Cyclic voltammetry was employed in temperatures ranging from 15 to 55°C to provide quantitative and qualitative information on the kinetics of alcohol oxidation. The temperature dependence of the electro-catalytic activities afforded the determination of apparent activation energies for ethanol and methanol oxidation.

Notes

If this is your thesis or dissertation, and want to learn how to access it or for more information about readership statistics, contact us at STARS@ucf.edu.

Graduation Date

2011

Semester

Spring

Advisor

Diaz, Diego J.

Degree

Master of Science (M.S.)

College

College of Sciences

Department

Chemistry

Format

application/pdf

Identifier

CFE0003628

URL

http://purl.fcla.edu/fcla/etd/CFE0003628

Language

English

Release Date

May 2011

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Included in

Chemistry Commons

Share

COinS