Multifunctionality in an Ion-Exchanged Porous Metal–Organic Framework

Porous robust materials are typically the primary selection of several industrial processes. Many these compounds are, however, not enough to be used as multifunctional materials. This is case Metal–Organic Frameworks (MOFs) which rarely combine different excellent functionalities into same material. In this report we describe simple acid–base postsynthetic modification isotypical porous rare-earth-phosphonate MOFs a truly system, maintaining original porosity features: [Ln(H3pptd)]·xSolvent [where Ln3+ = Y3+ (1) and (Y0.95Eu0.05)3+ (1_Eu)] converted [K3Ln(pptd)]·zSolvent (1K) (1K_Eu)] by immersing powder 1 1_Eu an ethanolic solution KOH for 48 h. The K+-exchanged Eu3+-based material exhibits considerable boost in CO2 adsorption, capable being reused consecutive cycles. It can further separate C2H2 from complex ternary gas mixture composed CH4, CO2, C2H2. high adsorption selectivity is, additionally, observed other gaseous mixtures, such C3H6 C3H8, with all results supported detailed theoretical calculations. incorporation K+ ions notably increases electrical conductivity 4 orders magnitude relative humidity conditions. assumed predominantly protonic nature, rendering one best conducting reported date.