Hydrogen-bonded polyamide 6/Zr-MOF mixed matrix membranes for efficient natural gas dehydration

FUEL

卷:285

Article

Wang, Ruolin¹  Zhang, Ying^1,2  Xie, Xiaoxue¹  Song, Qingxiang³  Liu, Pengxiao³  Liu, Yu¹  Zhang, Xiaocan^2,3 

[1] China Univ Petr, Coll New Energy & Mat, Dept Mat Sci & Engn, 18 Fuxue Rd, Beijing 102249, Peoples R China

[2] China Univ Petr, State Key Lab Heavy Oil Proc, 18 Fuxue Rd, Beijing 102249, Peoples R China

[3] China Univ Petr, Coll Sci, 18 Fuxue Rd, Beijing 102249, Peoples R China

关键词: Hydrogen-bonded mixed matrix membrane;    Natural gas dehydration;    Zr-MOF;    Polyamide 6;   

DOI  :  10.1016/j.fuel.2020.119161

来源: Elsevier

【 摘 要 】

New types of mixed matrix membranes (MMMs) were fabricated by incorporating Zr-MOF (UiO-66-NH2 and UiO66-NH3+Cl-) filler into polyamide 6 (PA 6) polymer, enabling efficient natural gas dehydration. All membranes were characterized and applied for H2O/CH4 mixtures separation at 1 bar pressure difference at 30 degrees C. It was found that the Zr-MOF nanoparticles in a size range of 0.4-0.5 mu m were successfully incorporated into the high permeability polymer PA 6 to obtain MMMs with 10-30 wt% particle loadings. MMMs loaded with 25 wt% of UiO-66-NH3+Cl- and 20 wt% of UiO-66-NH2 demonstrated ultrahigh H2O/CH4 selectivity of 747.7 and 687.4, respectively, and enhanced H2O permeability as well as H2O/CH4 selectivity compared with the pure PA 6 polymer. The excellent membrane performance attributed to direct and extensive hydrogen bonds between the polymer and MOFs. This type of MMMs could be an alternative for further research in H2O/CH4 separation at industrial scale.

【 授权许可】

Free