water adsorption in mofs. from structures to applications

D. Farrusseng (1) , C. Daniel (1) , J. Canivet (1) , Benoit Coasne

1 ING - IRCELYON-Ingéniérie, du matériau au réacteur

Understanding and predicting the adsorption behavior of water in microporous solids is crucial for the development of MOFs relevant for industrial processes. The effects of pore functionalization, pore size and morphology have not been investigated in a systematic fashion. In the present work, we report water adsorption isotherms for a large set of 15 representative MOFs. The diversity of isotherm profiles will be described and adsorption-desorption mechanisms discussed. We report a new indicator (a) of hydrophily-hydrophoby for hybrid nanoporous material ie. the relative pressure at which half of the total capacity is reached. Using this indicator, water adsorption properties have been mapped for 70 MOFs from the literature (red dots) and compared with other classical adsorbents (green squares: zeolites, mesoporous silica, carbons,...). From this map, we can clearly observed that some classes of MOFs (CPO-27, UiOs, MIL-100/101) posses adsorption properties which are not observed in classical adsorbents. We will show that these unique properties can be valorized in different applications such as drying agents, analytics applications, solar driven heap-pumps,... D. Farrusseng et al, Chem. Soc. Rev, 2014, 43, 5594 ; New Journal of Chemistry, 2014, 38, 3102

Domaines: Catalyse; Environnement et Société

D. Farrusseng, C. Daniel, J. Canivet, Benoit Coasne. water adsorption in mofs. from structures to applications. EuroMOF 2015 - 1st European Conference on Metal Organic Frameworks and Porous Polymers, Oct 2015, Potsdam, Germany. ⟨hal-01214472⟩