Related Experiment Video
Updated: May 27, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
A new strategy for determination of current efficiency during electro-oxidation of aromatic compounds in a packed-bed
Lizhang Wang1, Yuemin Zhao, Qingyu Gao
1School of Environmental Science and Spatial Informatics, China University of Mining and Technology, South Jiefang Road, Quanshan District, Xuzhou City, JiangSU, 221008, P. R. China. wlzh0731@126.com
Abstract:
The electro-oxidation of aromatic compounds in 4,4'-diaminostilbene-2,2'-disulfonic (DSD) acid wastewater on IrO2-Ta2O5/Ti anodes was studied. The current efficiency was evaluated in terms of chemical oxygen demand (COD) by introducing a new factor, the fraction of the Faradaic current to the total cell current (beta) through the network analysis of packed bed electrode system (PBEs). Experimental results using an up-flow PBEs at current intensities ranging from 5 to 16 A m(-2), flow rates ranging from 20 to 80 L h(-1) and inter-electrode distance of 5 to 50 cm are in good agreement with the proposed equation. In addition, lower current density, increasing flow rate and larger inter-electrode distance are beneficial to enhance the current efficiency.
Related Concept Videos
Controlled-Current Coulometry: Overview
Interfacial Electrochemical Methods: Overview
Thermal Electrocyclic Reactions: Stereochemistry
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
Processes at Electrodes
Standard Electrode Potentials
Controlled-Current Coulometry: Coulometric Titration
The fundamental requirements for coulometric titrations are (1) 100% efficiency in the reagent-generating electrode reaction and (2) a stoichiometric and preferably rapid reaction between the generated...

