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Ultra-high selectivity biogas upgrading through porous MXenes

Separing CO2 from Methane is a way of purifying, hence increasing the performance of biogas.

In this work, Hector Prats, Francesc Viñes and Francesc Illes, from the IQTC, and Hannah McAloone, used Density functional theory calculations including dispersion to show that MXenes present very high CO2 uptakes and selectivities even under the most adverse working conditions. Therefore two-dimensional porous MXenes with the formula M2C (M = Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W) are proposed as very promising sorbent materials for carbon dioxide (CO2) separation from methane (CH4) in the critical step of biogas upgrading. Note the eloquent & original illustration of a physico-chemical concept via the graphical abstract, by Patricia Verdugo.

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