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Solid solution for catalytic ammonia synthesis from nitrogen and hydrogen gases at 50 °C

Chemistry

Solid solution for catalytic ammonia synthesis from nitrogen and hydrogen gases at 50 °C

M. Hattori, S. Iijima, et al.

This groundbreaking research by Masashi Hattori, Shinya Iijima, Takuya Nakao, Hideo Hosono, and Michikazu Hara introduces a revolutionary low-temperature ammonia synthesis method using the stable catalyst cubic CaFH, achieving ammonia production at just 50 °C with an astonishingly low activation energy of 20 kJ mol⁻¹. A new era of energy-efficient catalysis is on the horizon!

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Playback language: English
Abstract
This paper presents a new approach for low-temperature ammonia synthesis using a stable electron-donating heterogeneous catalyst, cubic CaFH, a solid solution of CaF₂ and CaH₂. This catalyst produced ammonia from N₂ and H₂ gases at 50 °C with an extremely low activation energy of 20 kJ mol⁻¹, significantly lower than conventional catalysts. The high catalytic performance is attributed to weak ionic bonds between Ca²⁺ and H⁻ ions in the solid solution and the easy release of hydrogen atoms.
Publisher
Nature Communications
Published On
Apr 24, 2020
Authors
Masashi Hattori, Shinya Iijima, Takuya Nakao, Hideo Hosono, Michikazu Hara
Tags
ammonia synthesis
low temperature
catalyst
calcium fluoride
activation energy
hydrogen release

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