Project Title

Simple Photochemical Reduction of Carbon Dioxide to Formate

Authors' Affiliations

Ovuokenye Omadoko, Department of Chemistry, College of Arts and Sciences, East Tennessee State University, Johnson City, TN.

Location

AUDITORIUM ROOM 137A

Start Date

4-12-2019 2:00 PM

End Date

4-12-2019 2:15 PM

Faculty Sponsor’s Department

Chemistry

Name of Project's Faculty Sponsor

Dr. Dane Scott

Type

Oral Presentation

Classification of First Author

Graduate Student-Master’s

Project's Category

Energy Chemical Sciences

Abstract Text

Simple Photochemical Reduction of Carbon Dioxide to Formate

Ovuokenye Omadoko, Department of Chemistry, East Tennessee State University, Johnson City, Tennessee.

There is a need to develop techniques for conversion of carbon dioxide to other useful products such as methanol, formaldehyde, formic acid, formate, methane, and hydrocarbons. Carbon dioxide can be converted into these products using different methods such as photochemical, electrochemical, thermochemical and hydrogenation by bacteria. Formate is of interest due to having wide industrial applications which include use in direct liquid fuel cells (DLFC’s), an additive in pyrolysis vapors, precursor for biological fuels, and is a key intermediate in methanogenesis breaking down complex organic compounds. In this work, conversion of carbon dioxide to formate was accomplished photochemically. The concentration of formate obtained was quantified using ion chromatography. The yield of formate, based on the amount of carbon dioxide in solution, was 1.54%, while the quantum yield near 1.0%. Detailed studies of the photoreduction process showed that amount of sensitizer, light intensity and pH affect the amount of formate generated.

This document is currently not available here.

Share

COinS
 
Apr 12th, 2:00 PM Apr 12th, 2:15 PM

Simple Photochemical Reduction of Carbon Dioxide to Formate

AUDITORIUM ROOM 137A

Simple Photochemical Reduction of Carbon Dioxide to Formate

Ovuokenye Omadoko, Department of Chemistry, East Tennessee State University, Johnson City, Tennessee.

There is a need to develop techniques for conversion of carbon dioxide to other useful products such as methanol, formaldehyde, formic acid, formate, methane, and hydrocarbons. Carbon dioxide can be converted into these products using different methods such as photochemical, electrochemical, thermochemical and hydrogenation by bacteria. Formate is of interest due to having wide industrial applications which include use in direct liquid fuel cells (DLFC’s), an additive in pyrolysis vapors, precursor for biological fuels, and is a key intermediate in methanogenesis breaking down complex organic compounds. In this work, conversion of carbon dioxide to formate was accomplished photochemically. The concentration of formate obtained was quantified using ion chromatography. The yield of formate, based on the amount of carbon dioxide in solution, was 1.54%, while the quantum yield near 1.0%. Detailed studies of the photoreduction process showed that amount of sensitizer, light intensity and pH affect the amount of formate generated.