Oxygen removal

Produce high-purity gases by eliminating oxygen traces from gas streams using our catalytic solution, O2XTract™.

Topsoe is a reliable partner in your new energy reality journey, offering catalytic oxygen removal solutions for your green and renewable industrial applications.

Purifies hydrogen to the highest standards, up to 99.999% and above.

Works well for alkaline and PEM water electrolyzers, at any capacity and pressure.

Precious metal-based catalysts are active already at room temperature.

Pure streams - cost-efficiently

Even small amounts of oxygen in industrial gases can compromise product quality and downstream processes. Our O2Xtract™ solution is designed to cost-efficiently help overcome this issue. By removing traces of oxygen from gas streams, it helps ensure a high level of purification enabling the gases to meet even the strictest industry specifications, to be used in fuel cells, pipelines or chemical production. On top of this, the removal of oxygen helps protect sensitive equipment and extend the life of downstream catalysts.

O2Xtract™: an energy-efficient solution at low operating costs

O2Xtract removes traces of oxygen from hydrogen, but also, upon hydrogen addition, from gases as carbon dioxide and nitrogen across a wide range of temperatures and pressures. It is the ability of O2Xtract to perform well at low temperatures, that makes the solution particularly well-suited for water electrolysis by alkaline or PEM cells to ensure higher purity of the hydrogen stream.

This performance across a wide range of temperatures is enabled by our palladium-based CK-304 catalyst which ensures high performance, even at low temperatures, and a long operating cycle. The catalyst comes in active form and does not require any activation onsite. It ensures wide turndown ratio to make operation as flexible as possible.

The O2Xtract™ solution offers you

Green hydrogen of highest purity, up to 99.999% and above, for any application
Suitable for alkaline and PEM electrolyzers
Energy efficiency and low operation costs
Simple process installation and operation
Can be used for other industrial gases, such as N2 and CO2

O2Xtract purified hydrogen complies with the strictest modern specifications:

ISO 14687-2:2025 for fuel cell hydrogen
EASEE-gas recommendations for network grade hydrogen

Carbon dioxide can be purified to comply with the following purity standards:

ISO/TR 27921:2020 for captured CO2
ISO 27913:2024 for CO2 pipelines

H2 and CO2, ready for e-fuels production

Green hydrogen and biogenic carbon dioxide can be converted into valuable green chemicals and fuels, such as eMethanol, renewable natural gas (RNG), e-fuels (including sustainable aviation fuel (SAF) and renewable diesel) and carbon monoxide.

With the O2Xtract catalytic solution hydrogen can be purified to the highest standards, up to 99.999% and above, making it compliant with current requirements for e.g. green hydrogen and future-proof for evolving regulations.

Combining oxygen removal with VOC removal

O2Xtract can also be combined with the catalytic oxidation solution, CATOX™ in a two-step catalytic system. In such process, O2Xtract removes the surplus of oxygen used for catalytic volatile organic compound (VOC) removal. This combined powerful solution ensures optimal gas purity and compliance with even the strictest food and industry specifications.

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Catalysts for the oxygen removal process

The catalysts applied for the O2Xtract solution are based on precious metals on a carrier. The noble metal content has been optimized for a cost optimal solution which helps to significantly reduce the OPEX.

CK-304

The palladium-based CK-304 catalyst ensures high performance even at low temperatures, and long operation cycle.

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CK-307

The platinum-based CK-307 is an optimal solution for oxygen removal from sulfur-containing feedstocks.

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Related solutions

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The removal of VOCs from off-gasses in an environmentally friendly fashion with reduction efficiencies above 99% with Topsoe CATOX

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Authorities in many countries are tightening emissions standards by reducing permissible levels and adding new gases and particles to the list of regulated components.

Nitrous oxide removal

Nitrous oxide - N2O - is a powerful greenhouse gas with a global warming potential of 298 CO2 equivalents.

Green hydrogen

Explore the potential of green hydrogen with our high-efficiency SOEC electrolyzer. Learn more and accelerate your path to decarbonization.

Green ammonia

Built on a dynamic loop that easily handles fluctuating feedstock loads, our high-efficiency green ammonia plants are available in modular and stick-built designs.

e-Methanol

Produced from green hydrogen and biogenic CO2. Our proven ModuLite™ solution has been further developed to feature dynamic operation for optimal handling of green hydrogen feedstock.

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