TY - JOUR
T1 - Mixed Matrix Membranes Containing UiO-66(Hf)-(OH)2 Metal-Organic Framework Nanoparticles for Efficient H2/CO2 Separation
AU - Hu, Zhigang
AU - Kang, Zixi
AU - Qian, Yuhong
AU - Peng, Yongwu
AU - Wang, Xuerui
AU - Chi, Chenglong
AU - Zhao, Dan
N1 - Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/7/27
Y1 - 2016/7/27
N2 - Mixed matrix membranes (MMMs) have received significant attention recently in the applications of gas separation for clean energy and environmental sustainability. The compatibility between dispersed functional fillers and continuous polymer matrices of MMMs is the key issue to avoid the formation of nonselective defects for better gas separation performance. Because of their easily tunable porosity, functionality, and morphology, metal-organic frameworks (MOFs) have been regarded as ideal fillers for MMMs. In this work, we present a facile modulated hydrothermal synthesis of a hafnium UiO-66-type MOF UiO-66(Hf)-(OH)2 with well-defined nanoparticle size that exhibits a good compatibility with polybenzimidazole (PBI) as the polymeric matrix in the resultant MMMs. Compared to pure PBI membranes, MMMs containing MOF nanoparticles have both increased H2 permeability and H2/CO2 permselectivity under optimized conditions. One of the MMMs, 10%UiO-66(Hf)-(OH)2@PBI, demonstrates excellent H2 permeability (8.12 barrers) and H2/CO2 permselectivity (19.37) that put it above the 2008 Robeson upper bound. Mixed-gas permeation and durability tests are also carried out to evaluate the performance of these MMMs under working conditions.
AB - Mixed matrix membranes (MMMs) have received significant attention recently in the applications of gas separation for clean energy and environmental sustainability. The compatibility between dispersed functional fillers and continuous polymer matrices of MMMs is the key issue to avoid the formation of nonselective defects for better gas separation performance. Because of their easily tunable porosity, functionality, and morphology, metal-organic frameworks (MOFs) have been regarded as ideal fillers for MMMs. In this work, we present a facile modulated hydrothermal synthesis of a hafnium UiO-66-type MOF UiO-66(Hf)-(OH)2 with well-defined nanoparticle size that exhibits a good compatibility with polybenzimidazole (PBI) as the polymeric matrix in the resultant MMMs. Compared to pure PBI membranes, MMMs containing MOF nanoparticles have both increased H2 permeability and H2/CO2 permselectivity under optimized conditions. One of the MMMs, 10%UiO-66(Hf)-(OH)2@PBI, demonstrates excellent H2 permeability (8.12 barrers) and H2/CO2 permselectivity (19.37) that put it above the 2008 Robeson upper bound. Mixed-gas permeation and durability tests are also carried out to evaluate the performance of these MMMs under working conditions.
UR - http://www.scopus.com/inward/record.url?scp=84979735995&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.5b04568
DO - 10.1021/acs.iecr.5b04568
M3 - 文章
AN - SCOPUS:84979735995
SN - 0888-5885
VL - 55
SP - 7933
EP - 7940
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 29
ER -