当前位置: X-MOL 学术AlChE J. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Enhanced propylene/propane separation in facilitated transport membranes containing multisilver complex
AIChE Journal ( IF 3.5 ) Pub Date : 2021-08-25 , DOI: 10.1002/aic.17410
Yafei Su 1 , Shenzhen Cong 1 , Meixia Shan 1, 2 , Yatao Zhang 1
Affiliation  

Facilitated transport membrane containing a zero complex Ag4tz4 and 6FDA-TMPDA was fabricated via a solution-casting method and their separation performance toward C3H6/C3H8 was investigated. Ag4tz4 complexes were well dispersed in the polymeric matrix owing to the weak hydrogen bond between Ag4tz4 and 6FDA-TMPDA which can efficiently improve their interface compatibility. The reversible π complexation between C3H6 and Ag+ facilitates the C3H6 transport in membranes, which is beneficial to achieve high C3H6/C3H8 permselectivity according to the density functional theory calculation. Remarkably, the best separation performance was achieved by the 10 wt% Ag4tz4 membrane, for which the C3H6 permeability is 22 Barrer and the C3H6/C3H8 selectivity reaches up to 43, surpassing the Robeson upper bound. In addition, the membranes also exhibit great long-term stability (>120 h). The excellent separation performance together with the long-term stability render the membrane to be an interesting candidate for C3H6/C3H8 separation.

中文翻译:

在含有多银复合物的促进传输膜中增强丙烯/丙烷分离

通过溶液浇铸法制备了含有零复合Ag 4 tz 4和6FDA-TMPDA的易化传输膜,并研究了它们对C 3 H 6 /C 3 H 8的分离性能。由于Ag 4 tz 4和6FDA-TMPDA之间的弱氢键可以有效提高它们的界面相容性,Ag 4 tz 4配合物在聚合物基体中分散良好。C 3 H 6和 Ag +之间的可逆 π 络合促进了 C 3 H 6根据密度泛函理论计算,在膜中传输,这有利于实现高C 3 H 6 /C 3 H 8渗透选择性。值得注意的是,最好的分离性能是由 10 wt% Ag 4 tz 4膜实现的,其 C 3 H 6渗透率为 22 Barrer,C 3 H 6 /C 3 H 8选择性达到43,超过Robeson上限。此外,膜还表现出很好的长期稳定性(> 120 小时)。优异的分离性能和长期稳定性使该膜成为 C 3 H 6 /C 3 H 8分离的重要候选者。
更新日期:2021-08-25
down
wechat
bug