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What Is Carbon Monoxide Used For?

Tyler O'Brien | 3 minutes | July 18, 2025

Carbon monoxide (CO) is a crucial industrial gas used extensively in chemical manufacturing, metallurgy, and various technological applications. Its versatility makes it indispensable in modern industrial processes.

In this guide, you’ll learn about the main industrial use cases of carbon monoxide in more detail. We’ll also explain how the gas is used in innovative technologies and cutting-edge processes.

Chemical Manufacturing and Synthesis

Chemical manufacturing is among the most prevalent uses for carbon monoxide. It serves as a fundamental building block in producing numerous chemical compounds and products.

Here are some of the main ways CO is used in the chemical industry:

  • Methanol production: carbon monoxide reacts with hydrogen through a catalytic process, which creates methanol – an essential component for manufacturing plastics, paints, and synthetic fuels.
  • The Fischer-Tropsch process: this process uses carbon monoxide and hydrogen to produce liquid hydrocarbons. These synthetic fuels provide an alternative to traditional petroleum-based products.
  • Acetic acid production: carbon monoxide enables acetic acid production through carbonylation reactions. This process yields a vital chemical used in everything from vinegar to photographic films.

Metallurgical Applications

The steel industry relies heavily on carbon monoxide for its reducing properties. In blast furnaces, CO acts as a reducing agent, converting iron ore into pure iron.

This reduction process is fundamental to modern steel production. Carbon monoxide removes oxygen from iron oxide, creating pure iron while generating carbon dioxide as a byproduct.

Beyond steel, carbon monoxide is crucial for purifying various other metals. The gas helps extract pure metals from their oxide forms through high-temperature reduction processes.

Advanced Industrial Processes

Carbon monoxide is used across cutting-edge industrial applications. It’s essential in semiconductor manufacturing, where it serves as a specialized process gas.

CO is also important for fuel cell technology, where it acts as a fuel source for high-temperature solid oxide fuel cells. These advanced energy systems represent a growing application for this versatile gas.

Finally, carbon monoxide plays a vital role in catalyst production and regeneration. Many industrial catalysts require it during their manufacturing process or ongoing maintenance.

Emerging Technologies

Carbon capture and utilization technologies increasingly rely on carbon monoxide. These systems convert CO2 into useful products, with carbon monoxide serving as an intermediate compound.

Carbon monoxide also functions as a precursor gas in nanotechnology. It helps create advanced materials like carbon nanotubes and graphene, which are commonly used in next-generation electronics.

Modified atmosphere packaging is another novel use. The food industry employs carefully controlled amounts of carbon monoxide to maintain meat products’ color and freshness.

Explore the many uses of carbon monoxide

By understanding the various applications of CO, industrial gas users can better appreciate its role in modern manufacturing and leverage it in their operations. The gas continues to enable new technologies while supporting traditional industrial processes.

Proper handling and safety protocols are essential when working with carbon monoxide. Industrial users should always follow established safety guidelines and work with qualified gas suppliers to ensure safe and efficient operations.