title: Assessment of MOF's Quality: Quantifying Defect Content in Crystalline Porous Materials.
abstract: A quantitative method for assessment of defects in metal-organic framework (MOF) is presented based on isotherms calculated using Grand Canonical Monte Carlo (GCMC) simulations. Defects in MOF structures generated during the synthesis and sample preparation can lead to large variations in experimentally measured adsorption isotherms but are difficult to quantify. We use as a case study CO2 adsorption on Cu3(BTC)2 MOF (BTC = benzene-1,3,5-tricarboxylic acid) to show that different samples reported in the literature have various proportions of principal pores blocked or side pores blocked, resulting in isotherms with different capacity and affinity toward CO2. The approach presented is easily generalized to other materials, showing that simulation results combined with experimentally measured gas adsorption isotherms can be used to quantitatively identify key defective features of the material.
authors.affiliation: School of Chemical Engineering and Analytical Science, The University of Manchester , Oxford Road, Manchester, M13 9PL, United Kingdom.
authors.forename: Nadeen
authors.initials: N
authors.lastname: Al-Janabi
authors.affiliation: School of Chemical Engineering and Analytical Science, The University of Manchester , Oxford Road, Manchester, M13 9PL, United Kingdom.
authors.forename: Xiaolei
authors.initials: X
authors.lastname: Fan
authors.affiliation: School of Chemical Engineering and Analytical Science, The University of Manchester , Oxford Road, Manchester, M13 9PL, United Kingdom.
authors.forename: Flor R
authors.initials: FR
authors.lastname: Siperstein