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Highly selective room temperature acetylene sorption by an unusual triacetylenic phosphine MOF
49
Citations
33
References
2018
Year
The new ligand tris(p-carboxyphenylethynyl)phosphine (P{C[triple bond, length as m-dash]CC<sub>6</sub>H<sub>4</sub>-4-CO<sub>2</sub>H}<sub>3</sub>) was used to synthesize a permanently porous Mn(ii)-based acetylenic phosphine coordination material, PCM-48. This triply-interpenetrated MOF contains 1-D microchannels that are decorated with electron-rich and adsorbate-accessible acetylenic moieties and phosphine lone pairs. PCM-48 has a moderate room-temperature C<sub>2</sub>H<sub>2</sub> adsorption capacity (25.54 cm<sup>3</sup> g<sup>-1</sup>) and displays high separation selectivities for C<sub>2</sub>H<sub>2</sub> over CH<sub>4</sub> (C<sub>2</sub>H<sub>2</sub>/CH<sub>4</sub> = 23.3), CO<sub>2</sub> (C<sub>2</sub>H<sub>2</sub>/CO<sub>2</sub> = 4.3), and N<sub>2</sub> (C<sub>2</sub>H<sub>2</sub>/N<sub>2</sub> = 76.9) at 296 K.
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