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Solubility, Diffusivity, and Permeability of HFC-32 and HFC-125 in Amorphous Copolymers of Perfluoro(butenyl vinyl ether) and Perfluoro(2,2-dimethyl-1,3-dioxole)

https://doi.org/10.1021/acs.iecr.2c04518

Harders, Abby N. ; Sturd, Erin R. ; Wallisch, Luke ; Schmidt, Hannes ; Mendoza-Apodaca, Yuniva ; Corbin, David R. ; White, Whitney ; Junk, Christopher P. ; Shiflett, Mark B. ( March 2023 , Industrial & Engineering Chemistry Research)

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Multicomponent Refrigerant Separation Using Extractive Distillation with Ionic Liquids

https://doi.org/10.1021/acs.iecr.2c00937

Finberg, Ethan A. ; May, Tessie L. ; Shiflett, Mark B. ( July 2022 , Industrial & Engineering Chemistry Research)

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Separation of Azeotropic Hydrofluorocarbon Refrigerant Mixtures: Thermodynamic and Kinetic Modeling for Binary Adsorption of HFC-32 and HFC-125 on Zeolite 5A

https://doi.org/10.1021/acs.langmuir.2c01491

Yancey, Andrew D. ; Broom, Darren P. ; Roper, Mark G. ; Benham, Michael J. ; Corbin, David R. ; Shiflett, Mark B. ( September 2022 , Langmuir)

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First Measurements for the Simultaneous Sorption of Difluoromethane and Pentafluoroethane Mixtures in Ionic liquids Using the Integral Mass Balance Method

https://doi.org/10.1021/acs.iecr.2c00497

Baca, Kalin R. ; Broom, Darren P. ; Roper, Mark G. ; Benham, Michael J. ; Shiflett, Mark B. ( July 2022 , Industrial & Engineering Chemistry Research)

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Process Designs for Separating R-410A, R-404A, and R-407C Using Extractive Distillation and Ionic Liquid Entrainers

https://doi.org/10.1021/acs.iecr.1c02891

Finberg, Ethan A. ; Shiflett, Mark B. ( November 2021 , Industrial & Engineering Chemistry Research)

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Selective separation of HFC-32 from R-410A using poly(dimethylsiloxane) and a copolymer of perfluoro(butenyl vinyl ether) and perfluoro(2,2-dimethyl-1,3-dioxole)

https://doi.org/10.1016/j.memsci.2022.120467

Harders, Abby N. ; Sturd, Erin R. ; Vallier, Julia E. ; Corbin, David R. ; White, Whitney R. ; Junk, Christopher P. ; Shiflett, Mark B. ( June 2022 , Journal of Membrane Science)

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Phase Equilibria and Diffusivities of HFC-32 and HFC-125 in Ionic Liquids for the Separation of R-410A

https://doi.org/10.1021/acssuschemeng.1c06252

Baca, Kalin R. ; Olsen, Greta M. ; Matamoros Valenciano, Lucia ; Bennett, Madelyn G. ; Haggard, Dorothy M. ; Befort, Bridgette J. ; Garciadiego, Alejandro ; Dowling, Alexander W. ; Maginn, Edward J. ; Shiflett, Mark B. ( January 2022 , ACS Sustainable Chemistry & Engineering)

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Phase Equilibria, Diffusivities, and Equation of State Modeling of HFC-32 and HFC-125 in Imidazolium-Based Ionic Liquids for the Separation of R-410A

https://doi.org/10.1021/acs.iecr.0c02820

Morais, Ana Rita ; Harders, Abby N. ; Baca, Kalin R. ; Olsen, Greta M. ; Befort, Bridgette J. ; Dowling, Alexander W. ; Maginn, Edward J. ; Shiflett, Mark B. ( October 2020 , Industrial & Engineering Chemistry Research)
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Power generation from waste heat: Ionic liquid‐based absorption cycle versus organic Rankine cycle

https://doi.org/10.1002/aic.17038

Xu, Jiaming ; Scurto, Aaron M. ; Shiflett, Mark B. ; Lustig, Steven R. ; Hung, Francisco R. ( September 2020 , AIChE Journal)

Abstract
Aspen Plus® simulations using the Peng‐Robinson (PR‐EOS) and the COSMO‐SAC models were performed to study absorption power cycles (APCs) using mixtures of R‐134a with two ionic liquids, [C₂C₁im][Tf₂N] or [C₆C₁im][Tf₂N], and compared against an R‐134a organic Rankine cycle (ORC) operating under similar conditions. The PR‐EOS results were in agreement with calculations from a PR model fitted to the R‐134a + IL experimental phase equilibrium data. The APCs have similar efficiencies and outperform the ORC by 3%–46%, with the largest differences observed when operating with lower grade (lowerT_H) heating sources, lower quality cooling (higherT_L), and lower subcooling in the pump inlet stream. The PR‐EOS and the Conductor‐like Screening Model Segment Activity Coefficient (COSMO‐SAC) results follow similar trends, but numerical discrepancies are observed in the cycle efficiencies and stream flow rates and compositions due to differences in solubilities and enthalpy changes between both models, suggesting that improvements are needed to increase the accuracy of COSMO‐SAC for these systems.

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