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Title: Amine-functionalized (Al) MIL-53/VTEC™ mixed-matrix membranes for H2/CO2 mixture separations at high pressure and high temperature

Journal Article · · Journal of Membrane Science

In this report VTEC™ PI-1388 and 20 wt% (Al) NH2-MIL-53/VTEC™ PI-1388 mixed-matrix membranes (MMMs) with different thicknesses were tested for gas permeation of H2 and CO2 from 5 to 30 bar and from 35 to 300 °C. 50/50 H2/CO2 mixtures were also tested at 30 bar and 250 °C with stage cuts that ranged from 0.05 to 1. Gas permeation data show that the affinity of (Al) NH2-MIL-53 for VTEC™ PI-1388 is strong enough to perform gas separations under these conditions. At 30 bar and at temperatures above 200 °C, the performance of the MMMs for H2/CO2 separation improved significantly with increasing temperature. Specifically, the H2 permeability of the MMM at 300 °C increased by 70% with respect to that of VTEC™ PI-1388 (VTEC™ PI-1388: H2 = 85 Barrer, H2/CO2 = 4.0; MMM: H2 = 144 Barrer, H2/CO2 = 5.8). Gas mixture separations using VTEC™ PI-1388 and the MMM depended on the stage cut and reached a maximum H2/CO2 separation of 7.2 for VTEC™ PI-1388 and 7.5 for the MMM at a stage cut of 0.05.

Research Organization:
Univ. of Texas at Dallas, Richardson, TX (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE); National Science Foundation (NSF)
Grant/Contract Number:
FE0001293; NT0007636; CBET-0933563; CBET-1403950
OSTI ID:
1534104
Alternate ID(s):
OSTI ID: 1426304
Journal Information:
Journal of Membrane Science, Vol. 530, Issue C; ISSN 0376-7388
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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