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)
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)
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HFC-32 和 HFC-125 在全氟（丁烯基乙烯基醚）和全氟（2,2-二甲基-1,3-间二氧杂环戊烯）无定形共聚物中的溶解度、扩散率和渗透性
DOI：
10.1021/acs.iecr.2c04518
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发表时间：
2023
影响因子：
4.2
通讯作者：
Shiflett, Mark B.
中科院分区：
文献类型：
--
作者：
Harders, Abby N.;Sturd, Erin R.;Wallisch, Luke;Schmidt, Hannes;Mendoza-Apodaca, Yuniva;Corbin, David R.;White, Whitney;Junk, Christopher P.;Shiflett, Mark B.
R-410A是一种由50重量%二氟甲烷（HFC-32，CH2F2）和50重量%五氟乙烷（HFC-125，CHF2CF3）组成的共沸混合物，用于住宅和商业空调应用，由于HFC-125的高全球升温潜能值（GWP），将逐步减少。HFC-32可以在含有氢氟烯烃的低全球升温潜能值混合物中再利用;但是，现有的分离技术，即分馏，不能分离共沸混合物。膜技术提供了以较低的能耗和资本要求实现共沸氢氟碳化合物制冷剂混合物的选择性分离的机会。本研究探讨了使用无定形全氟聚合物分离R-410A。测定了HFC-32和HFC-125在全氟丁烯基乙烯基醚（PBVE）和全氟（2，2-二甲基-1，3-间二氧杂环戊烯）（PDD）共聚物中的渗透率、溶解度和扩散系数。用静态膜装置和压力上升法测定了HFC-32和HFC-125的纯气体渗透率。溶解度测量使用重量微量天平获得，扩散率使用Fickian模型计算。结果表明，HFC-32/HFC-125的高渗透性和选择性可以用50wt%PBVE和50wt%PDD共聚物获得，并且分离在测试的整个组合物范围内是扩散驱动的。
R-410A, an azeotropic mixture composed of 50 wt % difluoromethane (HFC-32, CH2F2) and 50 wt % pentafluoroethane (HFC-125, CHF2CF3) used in residential and commercial air-conditioning applications, will be phased down due to the high global warming potential (GWP) of HFC-125. The HFC-32 can be reused in low-GWP blends containing hydrofluoroolefins (HFOs); however, incumbent separation technology, fractional distillation, cannot separate azeotropic mixtures. Membrane technology provides the opportunity to achieve a selective separation of azeotropic HFC refrigerant mixtures with lower energy consumption and capital requirements. This study explores the use of amorphous perfluoropolymers for the separation of R-410A. The permeability, solubility, and diffusivity of HFC-32 and HFC-125 were measured in copolymers of perfluoro(butenyl vinyl ether) (PBVE) and perfluoro(2,2-dimethyl-1,3-dioxole) (PDD). Pure gas permeability of HFC-32 and HFC-125 were measured using a static membrane apparatus and the pressure-rise method. Solubility measurements were obtained using a gravimetric microbalance, and diffusivity was calculated using a Fickian model. The results indicate that a high permeability and selectivity of HFC-32/HFC-125 can be obtained with a 50 wt % PBVE and 50 wt % PDD copolymer and that the separation is diffusion-driven over the entire range of compositions tested.
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影响因子：
5.2
作者：
Andrew D. Yancey;Sophia J. Terian;B. J. Shaw;Tiana M. Bish;D. Corbin;M. Shiflett
通讯作者：
Andrew D. Yancey;Sophia J. Terian;B. J. Shaw;Tiana M. Bish;D. Corbin;M. Shiflett
影响因子：
4.2
作者：
A. Morais;Abby N. Harders;Kalin R. Baca;Greta M. Olsen;Bridgette J. Befort;A. Dowling;E. Maginn;M. Shiflett
通讯作者：
A. Morais;Abby N. Harders;Kalin R. Baca;Greta M. Olsen;Bridgette J. Befort;A. Dowling;E. Maginn;M. Shiflett
1,1,1,2-四氟乙烷 (HFC 134a)、五氟乙烷 (HFC 125) 和二氟甲烷 (HFC 32) 的相对介电常数测量
影响因子：
8.8
作者：
A. Abbott;C. Eardley;R. Tooth
通讯作者：
R. Tooth
全氟(丁烯基乙烯基醚)与全氟(2,2-二甲基-1,3-间二氧杂环戊烯)共聚物的气体分离性能
DOI：
--
发表时间：
2021
期刊：
影响因子：
--
作者：
Moataz Ali El;Liang Liu;C. Junk;Erich E. Kathmann;W. White;S. Kentish
通讯作者：
S. Kentish
全氟（丁烯基乙烯基醚）基全氟聚合物膜中的气体吸附和扩散
影响因子：
9.5
作者：
Moataz Ali El;Liang Liu;M. H. Abdellah;E. Goudeli;S. Kentish
通讯作者：
S. Kentish