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Here we show that,under mild reaction conditions,cobalt carbide quadrangular nanoprisms catalyse the FTO conversion of syngas with high
selectivity for the producton of lower olefins(constituing around 60.8 percent of carbon products),while generating little methane(about 5.0 percent)


with the ratio of desired unsaturated hydrocarbons to less valuable saturated hydrocarbons amongst the C2-C4 products being as high as 30.

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