Thermodynamics Drives the Stability of the MOF-74 Family in Water.

ABSTRACT: The stability of functional materials in water-containing environments is critical for their industrial applications. A wide variety of metal-organic frameworks (MOFs) synthesized in the past decade have strikingly different apparent stabilities in contact with liquid or gaseous H₂O, ranging from rapid hydrolysis to persistence over days to months. Here, we show using newly determined thermochemical data obtained by high-temperature drop combustion calorimetry that these differences are thermodynamically driven rather than primarily kinetically controlled. The formation reaction of a MOF from metal oxide (MO) and a linker generally liberates water by the reaction MO + linker = MOF + H₂O. Newly measured enthalpies of formation of Mg-MOF-74_(s) + H₂

SUBMITTER: Voskanyan AA 

PROVIDER: S-EPMC7288594 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature