Separation of C hydrocarbons, C H , C H , and C H , remains significant challenges in chemical industry. However, there are only few adsorbents that can effectively isolate C hydrocarbons from their mixtures particularly at a high temperature. Herein, we design a zeolitic octahedral metal oxide based on ϵ-Keggin polyoxometalates with metal ion linkers. Single gas adsorption of the material shows the different adsorption performances for the C hydrocarbons and the strong interaction of the material with the C hydrocarbons. Dynamic competitive adsorption experiments show that the material efficiently separates each of the binary C hydrocarbon mixtures and even the ternary C hydrocarbon mixtures with high selectivity. The material keeps high separation performance even the temperature was increased to 85 °C. The material is stable and is able to be reused without loss of the separation performance.
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