Article pubs.acs.org/cm
Mesoporous Hydrophobic Polymeric Organic Frameworks with Bound Surfactants. Selective Adsorption of C2H6 versus CH4 Alexandros P. Katsoulidis† and Mercouri G. Kanatzidis*,† †
Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States S Supporting Information *
ABSTRACT: Mesoporous polymeric organic frameworks (mesoPOF)s have been synthesized through surfactant mediated polymerization of phlorglucinol (1,3,5-trihydroxybenzene) and terephthalaldehyde under solvothermal conditions. The materials contain bound surfactant and exhibit hydrophobic properties. The mesoPOFs present high surface areas up to 1000 m2 g−1 and have pores of several size ranges from micropores to large mesopores depending on the amount of surfactant used. The adsorption uptakes of CO2, C2H6, and CH4 measured at 273 K at 1 bar are linearly correlated to the micropore volume. The mesoPOFs display high adsorption selectivity of C2H6 over CH4 by a factor of 40, and this property is dictated by their pore diameter. KEYWORDS: mesoporous polymers, templated synthesis, phloroglucinol, hydrophobic materials, adsorption selectivity
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INTRODUCTION Porous organic polymers are a rapidly expanding class of materials that combine porous properties with organic functionalities.1 Microporous polymers are the predominant type in this class having small pores (diameters of
