Researchers Develop Dual-Atom Iridium-Tungsten Catalyst for Efficient Ammonia Oxidation

Researchers have introduced a dual-atom catalyst composed of iridium and tungsten for selective ammonia oxidation, published in Nature Communications. This catalyst utilizes a cascade catalysis approach, enhancing reaction efficiency and selectivity while reducing byproducts.

The design allows iridium and tungsten to work synergistically, improving electronic properties and stabilizing intermediates. Advanced characterization techniques confirmed the atomic dispersion of the metals on a conductive support, essential for optimal performance.

Kinetic studies showed significant suppression of nitrous oxide formation during ammonia conversion to nitrogen and water. The catalyst demonstrated durability under industrial conditions, resisting deactivation.

Density functional theory calculations further elucidated the electronic interactions between the metals, predicting enhanced ammonia activation. This development holds promise for improving nitrogen oxide management and aligning with sustainability goals in chemical manufacturing.