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Oxidative Cleavage of Alkenes: Ozonolysis

Oxidative Cleavage of Alkenes: Ozonolysis

In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.

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Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.

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Related Experiment Video

Updated: Feb 24, 2026

A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration

A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration

Published on: March 29, 2019

An Iodide-Mediated Microdroplet for Efficient Ozone Decomposition.

Bosheng Chen¹, Cheng Ni¹, Lin Ding¹

¹Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.

Journal of the American Chemical Society

|February 23, 2026

Summary

This summary is machine-generated.

This study introduces an iodide-mediated microdroplet system for efficient ozone decomposition. The green chemistry approach enhances stability and rate, offering a scalable solution for air purification.

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Published on: November 7, 2016

Area of Science:

Green Chemistry
Chemical Engineering
Environmental Science

Background:

Microdroplet chemistry shows potential for green chemical processes but suffers from low reaction efficiency.
Limited practical applications due to restricted reaction efficiency in microdroplet systems.

Purpose of the Study:

To develop a scalable and efficient microdroplet system for ozone decomposition.
To investigate the mechanism of iodide-mediated reactions at the gas-liquid interface.
To assess the environmental and economic performance compared to existing technologies.

Main Methods:

Development of a scalable iodide-mediated microdroplet system (0.1 wt % iodide).
Investigation of ozone (O3) decomposition at the gas-liquid interface.
Comparison with bulk solution and spray reactor systems.
Life cycle assessment for environmental and economic evaluation.

Main Results:

Achieved 100% ozone decomposition at the gas-liquid interface for 120 hours.
Demonstrated enhanced stability and reaction rate due to iodide enrichment and O3 affinity.
Identified interfacial electric field-induced hydroxide dissociation and iodide regeneration.
Outperformed spray reactors with 100% O3 conversion, 5-fold longer stability, reduced cost, and lower energy consumption.

Conclusions:

The iodide-mediated microdroplet system offers a scalable, green, and efficient method for ozone purification.
Mechanistic understanding of iodide-driven interfacial redox reactions was provided.
The system presents superior environmental and economic performance compared to conventional methods.