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Related Concept Videos

Coupled Reactions01:17

Coupled Reactions

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Cellular processes such as building and breaking down complex molecules occur through stepwise chemical reactions. Some of these chemical reactions are spontaneous and release energy, whereas others require energy to proceed. Cells often couple the energy-releasing reaction with the energy-requiring one to carry out important cell functions. 
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Vicinal Diols via Reductive Coupling of Aldehydes or Ketones: Pinacol Coupling Overview01:27

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Wilhelm Rudolph Fittig discovered the pinacol coupling reaction in 1859. It is a radical dimerization reaction and involves the reductive coupling of aldehydes or ketones in the presence of hydrocarbon solvent to yield vicinal diols.
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Coagulation01:06

Coagulation

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Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
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Phase I Reactions: Oxidation of Carbon-Heteroatom and Miscellaneous Systems01:15

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Oxidative reactions are pivotal in metabolizing numerous compounds, including pharmaceutical drugs. These reactions often occur in carbon-heteroatom systems, such as carbon-nitrogen, carbon-sulfur, and carbon-oxygen.
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Controlled-Potential Coulometry: Electrolytic Methods01:17

Controlled-Potential Coulometry: Electrolytic Methods

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Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
The chosen potential...
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Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

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Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
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Updated: Aug 21, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

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Coupling Value-Added Anodic Reactions with Electrocatalytic CO2 Reduction.

Zikai Xu1, Chen Peng1, Gengfeng Zheng1

  • 1Laboratory of Advanced Materials, Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, P. R. China.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|November 16, 2022
PubMed
Summary

Coupling electrocatalytic CO2 reduction with value-added anodic reactions enhances energy efficiency and produces valuable chemicals. This review explores coupled electrolysis systems for practical CO2 utilization and carbon neutrality.

Keywords:
CO2 reduction reactioncoupled electrolysiselectrocatalytic oxidationelectrolysis cellvalue-added chemicals

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Chemical Engineering

Background:

  • Electrocatalytic CO2 reduction is key for carbon neutrality but limited by energy-intensive oxygen evolution reaction (OER).
  • Coupling CO2 electroreduction with anodic reactions offers a strategy to improve energy efficiency and generate valuable products.

Purpose of the Study:

  • To review recent advancements in electrocatalytic CO2 reduction.
  • To discuss the economic feasibility of various CO2 electrolysis systems.
  • To summarize progress in coupled electrolysis of CO2 with value-added anodic reactions, focusing on cell designs.

Main Methods:

  • Literature review of recent research on electrocatalytic CO2 reduction.
  • Analysis of economic feasibility studies for CO2 electrolysis.
  • Synthesis of findings on coupled electrolysis systems and cell designs.

Main Results:

  • Coupled electrolysis systems show promise for enhancing full-cell energy efficiency.
  • Integration of value-added anodic reactions diversifies product streams from CO2 electrolysis.
  • Specific cell designs are crucial for optimizing coupled electrocatalytic processes.

Conclusions:

  • Coupled electrolysis presents a viable pathway for efficient CO2 utilization and chemical production.
  • Further research is needed to address challenges and advance CO2 electrolyzer technology.
  • Optimizing cell design and economic feasibility are critical for practical implementation.