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Rainbow-colored background on which water drops are depicted, leaving an area that results in the lettering H2.

07.01.2025

Sustainability

Hydrogen Color Scale

We are all familiar with green hydrogen. Likely gray hydrogen as well. But do you know the story behind purple or turquoise hydrogen? In fact, there is a range of hydrogen colors that show how the gas is produced. Our infographic explains what the colors are and what exactly they mean: download

Hydrogen rainbow infographic, in which each color of the rainbow is assigned a type of hydrogen that differs in production.

This article originally appeared in ESSENTIAL, Freudenberg Sealing Technologies’ corporate magazine that covers trends, industries and new ideas. To read more stories like this, click here.

The Future Is Hydrogen

From H₂ Production to Usage: Comprehensive Insights on Production, Distribution, Storage, and Future Applications with Solutions. Explore full spectrum in our webspecial!

Hydrogen Webspecial open_in_new

Electrolysis: Global Market Leader Uses Freudenberg Seals

AEM electrolyzers offer customers the opportunity to produce green hydrogen on their own. The global leader in AEM technology relies on seals from Freudenberg Sealing Technologies. 

This graphic shows a model of a hydrogen infrastructure with a steel plant, Hydrogen production, etc.

26.11.2024

On the Way to a Hydrogen Infrastructure

Dr. Britta Mayerhöfer highlights the challenges of hydrogen transport – and explains how Freudenberg Sealing Technologies is supporting its customers on the expansion of the hydrogen network.

The Essential Edition H2 in rainbow colours stands in a desert.

14.11.2024

Hydrogen: Hype or Hope?

Disenchantment often follows hype. And then a new heyday often comes along. Where are we now on the hydrogen issue? Our prediction: Hydrogen is here to stay.

29.10.2024

Hydrogen Still Beckons

Hype always comes in waves. Marcel Schreiner explains why he is already thinking about the next rising trend for hydrogen – and why it will arrive sooner than some people think.

Illustration of a car whose exhaust cloud consists of water.

08.10.2024

How Is Hydrogen Produced?

Water is the source of all life on earth. Yet there is much more to it. Water is at the start and finish of a cycle that can help create a climate-neutral world.

11.06.2024

Spare Parts that Meet the Highest Standards

Corteco is the aftermarket business unit of Freudenberg Sealing Technologies. In the U.S., Corteco is supplying more and more motorcycle repair shops and tuners with spare parts in original equipment quality.

Illustration of a leaf made out of green neon lines. Copyright: iStock/synthetick

28.05.2024

AI and Sustainability

David Koch is an expert on digital sustainability management. He is confident that companies will increasingly be using AI to improve their sustainability in the future.

Solar panels on water. Copyright: shutterstock/Avigator Fortuner

09.01.2024

A Photovoltaic-Hydropower Hybrid

Thailand is known for its turquoise waters and the allure of its tropical sun. But the combination of sun and sea is capable of much more. It is producing renewable energy at the world’s largest hydro-solar park.

Portrait of a women in front of a gallery.

28.11.2023

“Integrity is the Key to Trust”

Singaporean management professor Tan Hwee Hoon describes why trust is built differently in Asia than in Europe. And what the global commonalities are.