Methods for the electroreduction of carbon dioxide to value added chemicals

Inactive Publication Date: 2019-02-21
THE BOARD OF TRUSTEES OF THE UNIV OF ILLINOIS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0006]According to one embodiment, a method of electroreducing carbon dioxide comprises: feeding a first stream comprising carbon dioxide into a chamber through a chamber inlet, the chamber containing a gas diffusion cathode and a gas diffusion anode; feeding a seco

Problems solved by technology

Thus, developing cost effective technologies that can mitigate, capture, or utilize the excess anthropogenic CO2 emissions remains a grand challenge of t

Method used

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  • Methods for the electroreduction of carbon dioxide to value added chemicals
  • Methods for the electroreduction of carbon dioxide to value added chemicals
  • Methods for the electroreduction of carbon dioxide to value added chemicals

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example 1

emical Performance for the Electroreduction of CO2

[0052]Unless stated otherwise, all experiments were performed under ambient conditions of 1 atm and 293 K, all commercially available materials were used as received, and >18.0 MO cm deionized (DI) water was used when required.

[0053]The electrolytes used herein were prepared by dissolving the appropriate amount of the salt and / or chemical in DI water. The salts and chemicals used were: potassium hydroxide (Fisher Chemical, product number: P250), glycerol (Alfa Aesar, product number: 38988), D-(+)-glucose (Sigma Life Science, product number: 49139). The pH and conductivity of the different electrolytes were measured using an Orion 4-star pH conductivity meter.

[0054]The electrochemical characterization of the different combinations of CO2 electroreduction at the cathode with the O2 evolution reaction and glycerol, glucose, or CH4 electrooxidation at the anode was performed in a gas diffusion electrode based dual electrolyte channel fl...

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Abstract

The present disclosure provides a method of electroreducing carbon dioxide (CO2). The method of electroreducing carbon dioxide may include feeding a first stream comprising carbon dioxide into a chamber through a chamber inlet, the chamber containing a gas diffusion cathode and a gas diffusion anode; feeding a second stream comprising glycerol or glucose into the chamber, the second stream having a pH of 12 to 14; and applying an electrical potential between the gas diffusion anode and the gas diffusion cathode to reduce the carbon dioxide and oxidize the glycerol or glucose.

Description

RELATED APPLICATIONS[0001]The present patent document claims the benefit of priority under 35 U.S.C. § 119(e) to U.S. Provisional Patent Application No. 62 / 546,044, filed on Aug. 16, 2017, which is hereby incorporated by reference in its entirety.TECHNICAL FIELD[0002]The present disclosure is related generally to the electroreduction of carbon dioxide and more particularly to a method of electrochemically reducing carbon dioxide and oxidizing glycerol or glucose.BACKGROUND[0003]The global atmospheric carbon dioxide (CO2) concentrations have been on a constant rise in the past few decades, with the daily average value crossing and staying above the 400-ppm mark in 2016, for the first time in recorded human history. The rise in CO2 levels has been correlated to the increase in mean global temperature anomalies (global warming). Thus, developing cost effective technologies that can mitigate, capture, or utilize the excess anthropogenic CO2 emissions remains a grand challenge of the 21s...

Claims

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Application Information

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IPC IPC(8): C25B3/04C25B3/02C25B9/10C25B3/23C25B3/25C25B9/23
CPCC25B3/04C25B3/02C25B9/10C25B15/08C25B5/00C25B3/25C25B3/23C25B9/23
Inventor KENIS, PAUL J. A.VERMA, SUMITLU, SHAWN
Owner THE BOARD OF TRUSTEES OF THE UNIV OF ILLINOIS
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