Abstract
A novel enhanced hydrophobic MIL(Cr) metal-organic framework was obtained by using naphthalene dicarboxylic acid as ligand and its adsorption equilibrium, diffusion kinetics and competitive adsorption for benzene and water were investigated systematically. Results show that: (1) the MIL(Cr)-Z1 possessed similar crystal structure and morphology to the MIL(Cr)-101. It had high surface area of 3008m2/g with smaller window apertures (6.9Å) and pore cages (23.3Å) than MIL(Cr)-101; (2) it had high benzene uptake of ∼7.0mmol/g with the isosteric heat of ∼51kJ/mol and high benzene diffusivity (30–40 times quicker than water molecules); (3) it showed an improved hydrophobic property with very low adsorbed amount for water vapor, only about 9.84mmol/g and 13% of that on MIL(Cr)-101 at 80 RH% and 298K; (4) breakthrough curves show that MIL(Cr)-Z1 had high working capacity for benzene, which was 58% higher than that of MIL(Cr)-101 at 60 RH%. Thus, high adsorption capacity and selectivity for benzene VOCs make enhanced hydrophobic MIL(Cr)-Z1 a promising candidate for benzene VOCs capture under high-moisture environments.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
