Researchers in China and Taiwan report a copper catalyst that converts ethane and carbon monoxide into propionic acid at room temperature in dilute acid with oxygen. Published in Nature Synthesis, the work reaches up to 83 percent selectivity for propionic acid, though the best selectivity comes with slower production rates around 120 micromoles per gram of copper per hour. Ethane is abundant in natural gas and often flared, so a mild route to a useful chemical could reduce the energy footprint of current petrochemical processing. The reaction splits the work: oxygen on the copper surface activates ethane, while copper ions in solution bind carbon monoxide and couple with the activated fragment. The authors say the approach could extend to methane and propane, but note that rates are far from industrial scale and durability and reactor design remain open questions. For anyone tracking low-carbon chemistry, this is an early-stage result worth watching rather than a commercial process ready for deployment.
