catalysts
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Chemistry
Less is more: Why economical iridium catalysts work so well
Two different iridium-based nanocatalysts for water electrolysis were examined by the HZB-led team. A commercially available benchmark catalyst (left) and a newly developed P2X catalyst (right) that is more amorphous and requires a quarter less iridium. Spectroelectrochemical data show how the specific chemical environments differ in both materials and how they influence the oxygen evolution reaction. Credit: M. van der…
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Chemistry
Study of iron catalysts provides insight into ammonia decomposition
Credit: ACS Catalysis (2024). DOI: 10.1021/acscatal.4c04415 The use of ammonia is considered a promising method to transport hydrogen. But we also need an efficient process to convert it back into hydrogen and nitrogen. An international research team has gained new insights into the mode of operation of iron catalysts that can be used to split ammonia into nitrogen and hydrogen.…
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Chemistry
Affordable iron catalysts offer sustainable route to valuable Z-alkenes
This schematic illustrates the development of an iron-catalyzed dialkylation reaction that selectively converts arenes to the thermodynamically unfavorable Z isomer of trisubstituted alkenes. The reaction proceeds through transition states TS 1 and TS 2, each involving a different carbon-carbon bond formation chemical process. The high regioselectivity and Z-selectivity of this method make it a valuable tool for organic synthesis. Credit:…
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