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Silver-Based Deep Eutectic Solvents as Separation Media: Supported Liquid Membranes for Facilitated Olefin Transport
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-07-11 00:00:00 , DOI: 10.1021/acssuschemeng.7b01092 Bin Jiang 1 , Haozhen Dou 1 , Baoyu Wang 1 , Yongli Sun 1 , Zhaohe Huang 1 , Hanrong Bi 1 , Luhong Zhang 1 , Huawei Yang 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-07-11 00:00:00 , DOI: 10.1021/acssuschemeng.7b01092 Bin Jiang 1 , Haozhen Dou 1 , Baoyu Wang 1 , Yongli Sun 1 , Zhaohe Huang 1 , Hanrong Bi 1 , Luhong Zhang 1 , Huawei Yang 1
Affiliation
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Supported liquid membranes (SLMs) have exhibited great potential as interesting materials for the separation of olefin/paraffin mixtures. To further improve the performance of SLMs, novel and sustainable silver-based deep eutectic solvents (DESs) constructed from trifluoromethanesulfonate (AgCF3SO3) and acetamide (CH3CONH2) were synthesized as membrane liquids for the first time. Their formation mechanism and structure were investigated intensively, confirming that multiple coordination and hydrogen-bonding interactions yielded homogeneous and stable liquids that contained free silver ions and silver-containing cationic complexes as carriers for the facilitated transport of C2H4. The as-prepared DES-SLMs were characterized by SEM and ATR-FTIR and their separation performances were investigated by C2H4/C2H6 separation experiments. The effects of the composition of the silver-based DESs, the operating temperature, and the transmembrane pressure were also investigated systemically. The permeability selectivity, solubility selectivity, and diffusivity selectivity were also quantitatively analyzed. Compared with previously reported results, the as-prepared DES-SLMs exhibited excellent permeabilities of C2H4 and comparable selectivities of C2H4/C2H6, thus exceeding the upper bound. This investigation might provide alternatives for the development of high-performance SLMs for olefin/paraffin separations and insights into the formation mechanism of silver-based DESs for further design and strengthening.
中文翻译：
银基深共熔溶剂作为分离介质：支持的液体膜，有助于烯烃的运输
作为分离烯烃/石蜡混合物的有趣材料，负载型液膜（SLM）具有巨大的潜力。为了进一步提高SLM的性能，首次合成了由三氟甲磺酸盐（AgCF 3 SO 3）和乙酰胺（CH 3 CONH 2）构成的新型，可持续的银基深共熔溶剂（DES）。对它们的形成机理和结构进行了深入研究，证实了多重配位和氢键相互作用产生了均一且稳定的液体，其中含有游离银离子和含银阳离子络合物作为促进C 2 H 4传输的载体。通过SEM和ATR-FTIR对制备的DES-SLM进行了表征，并通过C 2 H 4 / C 2 H 6分离实验研究了它们的分离性能。还系统地研究了银基DES的组成，操作温度和跨膜压力的影响。还对渗透率选择性，溶解度选择性和扩散选择性进行了定量分析。与先前报道的结果相比，所制备的DES-SLM表现出出色的C 2 H 4渗透性和相当的C 2 H 4 / C 2 H 6选择性，因此超出上限。这项研究可能为开发用于烯烃/石蜡分离的高性能SLM提供替代方案，并为进一步设计和增强对基于银的DES的形成机理提供了见识。
更新日期：2017-07-11
中文翻译：
银基深共熔溶剂作为分离介质：支持的液体膜，有助于烯烃的运输
作为分离烯烃/石蜡混合物的有趣材料，负载型液膜（SLM）具有巨大的潜力。为了进一步提高SLM的性能，首次合成了由三氟甲磺酸盐（AgCF 3 SO 3）和乙酰胺（CH 3 CONH 2）构成的新型，可持续的银基深共熔溶剂（DES）。对它们的形成机理和结构进行了深入研究，证实了多重配位和氢键相互作用产生了均一且稳定的液体，其中含有游离银离子和含银阳离子络合物作为促进C 2 H 4传输的载体。通过SEM和ATR-FTIR对制备的DES-SLM进行了表征，并通过C 2 H 4 / C 2 H 6分离实验研究了它们的分离性能。还系统地研究了银基DES的组成，操作温度和跨膜压力的影响。还对渗透率选择性，溶解度选择性和扩散选择性进行了定量分析。与先前报道的结果相比，所制备的DES-SLM表现出出色的C 2 H 4渗透性和相当的C 2 H 4 / C 2 H 6选择性，因此超出上限。这项研究可能为开发用于烯烃/石蜡分离的高性能SLM提供替代方案，并为进一步设计和增强对基于银的DES的形成机理提供了见识。
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