Climate Campaign Free N2O-Removal Catalysts for Global Nitric Acid Producers

From Ahlam Rais

Clariant has announced a major climate campaign under which it will deliver its nitrous oxide- (N2O) removal catalysts i.e. its EnviCat N2O-S catalyst for free to 10 nitric acid producers across the globe. The catalyst is capable of removing up to 95 % of N2O generated as a by-product of nitric acid production and converting it into harmless gases such as oxygen and nitrogen.

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Clariant’s EnviCat N2O-S catalyst removes N2O from the tail gas of nitric acid plants and converts it into harmless nitrogen and oxygen.
Clariant’s EnviCat N2O-S catalyst removes N2O from the tail gas of nitric acid plants and converts it into harmless nitrogen and oxygen.
(Source: Clariant)

Muttenz/Switzerland – Clariant has recently launched a major global campaign to reduce the climate change impact of nitrous oxide (N2O). The company has developed the EnviCat N2O-S catalyst which is proven to remove up to 95 % of N2O generated as a by-product of nitric acid production.

Clariant is now offering a free fill of EnviCat N2O-S to 10 nitric acid producers who do not have N2O off-gas treatment in place. Through the campaign, the company intends to help avoid greenhouse gas emissions equivalent to several million tons of CO2 every year. Of the approximately 500 nitric acid plants operating globally, more than half run without N2O abatement, mostly in regions without applicable emission control regulations.

Over 60 million tons of nitric acid are produced annually around the world, mainly for manufacturing fertilizers. Despite its importance for our food chain, the chemical has a major drawback: its production emits N2O, which is extremely harmful for the climate. The greenhouse gas remains approximately 114 years in the atmosphere and thus impacts global warming around 300 times more than CO2. Annually, N2O emissions from the production of nitric acid and its derivative adipic acid are equivalent to about 100 million tons of CO2.

The catalyst converts up to 95 % of the N2O formed during nitric acid production into the harmless substances oxygen and nitrogen. Besides climate benefits, the catalyst can also slightly increase nitric acid yield by improving the efficiency of the ammonia oxidation process.

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