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ADSORPTION INDUCED SOLID PHASE TRANSITION OF MIL-53(Al)

BANDODKAR, RUSHIK G

Abstract Details

2019, Master of Science in Chemical Engineering, Cleveland State University, Washkewicz College of Engineering.
Metal organic frameworks (MOFs) are nano-porous solids with potential applications in a wide range of fields including gas separation and catalysis. A number of metal organic frameworks show structural transformation and exceptional flexibility on changing the temperature, pressure and adsorption of certain guest molecules. On the contrary, most of the porous solids like zeolites and activated carbon used in applications are rigid. The structural flexibility makes MOF materials very interesting to study and show promise in applications such as sensors, actuators, membrane separation and adsorptive separation. In this study, we examine the chemical potential difference (Δμ) of MIL-53 (Al), a MOF which exhibits a “breathing” phenomena by transitioning between its narrow pore (np) and large pore (lp) conformation. It is important to measure Δμ between the two phases of the solid to be able to predict and/or model gas adsorption. Single component adsorption equilibria of carbon dioxide (CO2), methane (CH4), nitrogen (N2) and oxygen (O2) were measured over a pressure range of 0-20 bar at 273K, 293K and 306K, using a magnetic suspension microbalance. The adsorption measurements show that experimental sample of MIL-53(Al) behaves differently in case of CO2 when compared with other gases. The data obtained is used to investigate these differences in the adsorption characteristics of narrow pore and large pore phases. A modified form of Langmuir model is fitted to the experimental data and corresponding chemical potential differences between the two pore conformations is determined. The effect of temperature dependency is also investigated.
ORHAN TALU, Dr (Advisor)
GEYOU AO, Dr (Committee Member)
CHRISTOPHER WIRTH, Dr (Committee Member)
113 p.

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Citations

  • BANDODKAR, R. G. (2019). ADSORPTION INDUCED SOLID PHASE TRANSITION OF MIL-53(Al) [Master's thesis, Cleveland State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=csu1566984113575368

    APA Style (7th edition)

  • BANDODKAR, RUSHIK. ADSORPTION INDUCED SOLID PHASE TRANSITION OF MIL-53(Al). 2019. Cleveland State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=csu1566984113575368.

    MLA Style (8th edition)

  • BANDODKAR, RUSHIK. "ADSORPTION INDUCED SOLID PHASE TRANSITION OF MIL-53(Al)." Master's thesis, Cleveland State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=csu1566984113575368

    Chicago Manual of Style (17th edition)