This article describes a groundbreaking sustainable method developed by chemists at the National University of Singapore for electrosynthesizing 1,3-butadiene, a critical feedstock for synthetic rubber production, from acetylene. Using copper catalysts modified with iodide anions, the process achieves high efficiency, reducing the environmental impact and energy requirements compared to traditional production methods. This innovative approach, which employs renewable electricity, reaches a Faradaic efficiency of 93% and surpasses catalytic activity benchmarks set by previous studies. Extensive experimental and computational analyses revealed that the iodide-modified copper catalysts enhance carbon-carbon coupling, facilitating the formation of 1,3-butadiene. This advancement not only paves the way for more sustainable chemical manufacturing but also sets the stage for further development of catalysts capable of producing longer-chain hydrocarbons for applications like aviation fuel.
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